¡@¡@The isolation, separation, and self-contained characteristics of island environ-ments form the unique systems of ecology, culture, and landscape. Simultaneously, characteristics such as a lack of available area, high population density, and depend-ence on imports cause high vulnerability and low resilience in these isolated islands. There are 11 islands around Taiwan. Penghu is one of the islands in this area with the highest density. Under the impact of climate change, the vulnerability and the adapta-tion of the island¡¦s city may be affected. Therefore, Makung City served as a base for this study, which uses field observations and the collection of relevant literature, fol-lowed by spatial analysis methods and vulnerability assessment model analysis to de-termine the vulnerability of Magong City. The study¡¦s results and recommendations could provide a basis for policy on the island with respect to spatial planning and management. ¡@¡@To determine the sources of vulnerability on the island, vulnerability indicators can distinguish between the environment and society. However, up to now, we have not considered the difference between the islands near Taiwan. Therefore, the gov-ernment could not provide basic data to assess vulnerability. However, according to the limiting data of the vulnerability assessment results, the neighborhoods near the Makung port are in a high vulnerability area. If climate change continues with a sea level rise and storm surges, it may impact buildings near the coastal area of Makung City. In this study, the weight of vulnerability indicators was built by equal concep-tion to analyze the island¡¦s vulnerability wholly. Therefore, vulnerability research could try to build weight of island vulnerability in the future.

The coastal zone including coastal waters and littoral zone are influenced by the interactions between sea and land, and the resources of coastal areas have significant functions and values whatever the regards of nature ecology, industry development, transportation, tourism, national defense, and academic research. Following the population growth, economic advancement, and the change of industry, the land use of coastal zone is more diverse and complex. The incompatible between development and marine environment was happened sometimes. In order to solve the conflicts of coastal resources multiple use and mitigate the negative effects by human activities, integrated coastal zone management was become the most important way for sustainable using the sea. ¡§Integrated Coastal Zone Management (ICZM)¡¨ is a resource management system applying the process of integration, connection, and interaction, to analyze the complicated management problem at coastal areas. It is also a framework of principles and methodology for identification of important environmental priorities and allocation of scarce resources. It is an integrated management planning process emphasizing the comprehensive aspect to achieve the sustainable development of the coastal zone. Because the laws and regulations about land planning and coastal zone management is under legislation and the ¡§Coastal Zone Management Plan¡¨ of Kaohsiung County is not accomplished, the research attempts to understand the future development concept and direction about coastal areas in Kaohsiung County according to ¡§Kaohsiung County Comprehensive Development Plan¡¨. The research formulates some phenomena at present involving artificial construction causing coastal erosion, making land destroying the ecology, development project standing, development location overlapping, project contents competing each other, objective scale too large, disregard environmental sensitive areas, using a lot of hard structures, etc. Furthermore, we survey the planning and management of coastal zone through the aspects of integration among sectors, between the land and the water sides of the coastal zone, among levels of government, and among disciplines. Synthesizing the discussions of research, we can find the major problem of coastal zone management at Kaohsiung County is not lacking of planning project, instead of having too many but the implement result is not satisfactory. It is perceived that investigating and evaluating of the resource supply and the user demand at advance planning process was insufficient. Besides, it didn¡¦t have a comprehensive development plan which thinks about coastal environment from the first to be a basis of integration and coordination the various land use. Expecting the future coastal zone development and management, the responsible agency and project proponent can discard the departmental egoism, prior consider the integrated environment, proceed to communication, coordination, and integration continuously in search of a common consensus and vision. Only if that, the coastal zone development can be sustainable.

This study posits that there may be a systematic bias in measuring the transit’s endogenous impact on land values in a built up area due to discrimination by location in the city. Studies of transit value-added effect report mixed results about the capitalization of station proximity. The question is not whether a transit station influences nearby land values, but how and where location determines the impacts. Examining 731 office rentals and land values in Seoul, this study finds that value premium over better accessibility to a station decays with increasing distance from the central business district (CBD) and significantly depends on the development density of the station area. Overall, station benefits seem to exist in Seoul, but they look more notable in centers with higher centrality. This makes a hierarchy of regression coefficients for station proximity by location, i.e. the beta in the CBD is the highest and those in the subcenters are next, while that in other areas is the lowest. Study findings imply that the potential of more compact and denser developments within station areas seems higher in a dense inner city, providing evidence for the concept of ‘compact city.’ Questions concerning model specification in the hedonic approach are raised: in research sampled heavily from the suburbs, the coefficient may be underestimated where this benefit actually exists. Also, due to the incongruence of station area with station value-added area, using a dummy variable seems intrinsically risky. This study shows that estimation with spatial models outperforms OLS estimation in the presence of spatial autocorrelation. Also, there is a strong spatial autocorrelation even in the SAR residuals where the omission of key variables still influences the estimation. Overall, spatial lag and error term variables greatly improve the fitness of regression equations; however, the latter seemed more useful than the former in this study. One thing to note is that the latter seems more sensitive to the choice of weight matrix than the lag variable. There may exist a unique weight scheme proper for the data structure which cannot be known in advance.

It is an internationally acknowledged that marine protected area (MPA) is an important measure for maintaining biodiversity and rescuing endangered species. MPA can also effectively inhibit human interferences such as development and pollution discharge. The establishment of MPA is possible to fulfill the goal of sustainable management, which is to conserve marine habitat for an integrative ecosystem and a higher biodiversity. However, how to design an effective MPA remains an important research issue to be explored. In order to grasp the spatial distribution of the ecological data in the study area, the current research uses spatial interpolation tool, Kriging, provided by the Geographic information system (GIS) software. Then three spatial analytical models have been developed based on integer programming techniques. It is guarantee that all three models can find the global optimal solutions for the best protective area partitions. This quantitative approach is more efficient and effective compared to the qualitative methods in many aspects. The models are able to preserve the maximum ecological resources under the limited spatial area. Besides, the model formulation can be adjusted from different environmental impact factors to fulfill the requirements of users. The case study of the research is to design a MPA for Kaomei wetland. However the spatial analytical models developed in this research can also be applied to protected area design in land area.

There are a number of decision making problems in which Geographical Information System (GIS) has employed to organize and facilitate the procedure of analyzing the problem. These GIS-based decision problems which typically include a number of different criteria and alternatives are generally analyzed by Multicriteria Decision Analysis (MCDA).Different locations within a geographical area represent the alternatives by which the overall goal of the project is achieved. The quality of achieving the goal is evaluated by a set of criteria which should be considered in the work. Analytic Hierarchy Process (AHP) which is a powerful method of MCDA generally can organize spatial problems and decides which alternatives are most suitable for the defined problems. However due to some intrinsic uncertainty in the method, a number of authors suggest fuzzifying the method while others are against fuzzification of the AHP. The debate over fuzzifying AHP is going on and attempt for finding that was mostly in theory, and little, if any; practical comparison between the AHP and fuzzified AHP has done. This work presents a practical comparison of AHP and fuzzy AHP in a GIS-based problem, case study, for locating a dam in Costa Rica, considering different criteria. In order to perform the AHP and fuzzy AHP in the GIS-based problem and calculating weights of the criteria by the methods, some computer codes have written and developed in MATLAB. The comparisons between the AHP and fuzzy AHP methods are done on result weights and on the result final maps. The comparison between the weights is repeated on different levels of uncertainty in fuzzy AHP then all the results are compared with the result of AHP method. Also this study for checking the effect of fuzzification on results is suggested Chi-Square test as a suitable tool. Comparisons between the resulting weights of the AHP and fuzzy AHP methods show some differences between the methods. Furthermore, the Chi-Square test shows that the higher level of uncertainty in the fuzzy AHP, the greater the difference in results between the AHP and fuzzy AHP methods.

The water quality in the United States has greatly improved since the implementation of the Clean Water Act (CWA) in the early 1970s. Unfortunately, the Clean Water Act only addresses one kind of water pollution, point source pollution. The major problem that is present in the degradation of todays water quality has to deal with nonpoint source pollution. Agriculture is commonly regarded as the leading contributor to nonpoint source pollution in the United States. This study uses two analytical tools to try to determine the significant factors in the transport of pollutants in the Lower Kentucky Watershed, located in central Kentucky. Spatial analysis (GIS) coupled with the statistical analysis (SAS), allowed for significant factors to be identified within a small proximity of sampling sites throughout the watershed. The results suggest that although agriculture is commonly regarded as the largest contributor to nonpoint source pollution, other factors outside of agriculture were also found to be significant, such as resident land use and rainfall. The results generated from this study suggest that land managers in communities throughout the watershed should analyze agricultural factors, as well as, factors outside of agriculture, in an effort to protect their communities water quality.

Οι ρηξιγενείς ζώνες περιλαμβάνουν συνήθως ασυνεχή, υποπαράλληλα, κλιμακωτά ρηξιγενή τμήματα τα οποία χωρίζονται από ζώνες μεταβίβασης (relay zones). Καθώς οι ρηξιγενείς ζώνες εξελίσσονται, τα τμήματα των ζωνών αυτών, μπορούν να αλληλεπιδρούν μηχανικά και να ενώνονται σταδιακά, σχηματίζοντας έτσι δομές μεγαλύτερης κλίμακας με την αύξηση της παραμόρφωσης. Ο τρόπος με τον οποίο τα τμήματα αλληλεπιδρούν κατά τη διάρκεια της εξέλιξης των ζωνών, έχει γίνει αντικείμενο αρκετών ερευνών. "στόσο ακόμα και σήμερα οι γνώσεις μας για τις διεργασίες της αλληλεπίδρασης και της σύνδεσης των τμημάτων είναι περιορισμένες. Στην παρούσα εργασία, για τη μελέτη της τμηματοποίησης και τρόπου σύνδεσης κανονικών ρηγμάτων, επιλέχθηκαν οι ρηξιγενής ζώνες της Αρκίτσας στο Ευβοϊκό κόλπο. Οι ρηξιγενείς αυτές ζώνες έχουν διεύθυνση ΔΒΔ. Η επιλογή της περιοχής έγινες με βάση την σημαντική τεκτονική της δραστηριότητα τα τελευταία 1,5 εκατομμύρια χρόνια και την σπουδαιότητά της στη νεοτεκτονική εξέλιξη της Κεντρικής Ελλάδας. Στην παρούσα διατριβή υπολογίστηκαν παράμετροι που αντανακλούν έμμεσα την κατανομή της τάσης γύρω από τα ρήγματα, όπως είναι η κατακόρυφη μετατόπιση (D), το μήκος των ρηγμάτων (L), ο αριθμός των ρηξιγενών τμημάτων κάθε ζώνης (n), η επικάλυψη (OL), η κλιμάκωση (S) και το μήκος της ζώνης μεταβίβασης (Lr). Οι παράμετροι αυτοί αποτελούν δείκτες του βαθμού σύνδεσης μεταξύ των ρηξιγενών τμημάτων καθώς και του βαθμού ωριμότητα μιας ενεργού ζώνης. Έτσι, χρησιμοποιήθηκαν αρχικά Ψηφιακά Μοντέλα Αναγλύφου (DEM) από τα οποία κατασκευάστηκαν τοπογραφικά προφίλ σε κάθε ρηξιγενή ζώνη, με σκοπό τον υπολογισμό της κατακόρυφης μετατόπισης των ρηγμάτων τόσο στα επί μέρους τμήματα όσο και στις ζώνες μεταβίβασης καθώς και η κατανομή της μετατόπισης κατά μήκος οροφής- βάσης των ρηγμάτων. Επίσης προσδιορίστηκε η γεωμετρία των ζωνών μεταβίβασης μεταξύ των ρηξιγενών τμημάτων, με σκοπό να εξετασθούν οι τρόποι σύνδεσης των τμημάτων με υπολογισμό του μήκους των μη επικαλυπτόμενων ζωνών (underlapping zone), των ζωνών επικάλυψης (overlap zone) και των κλιμακώσεων (separation/spacing). Τα μήκη των τμημάτων των ρηξιγενών ζωνών προβλήθηκαν σε διαγράμματα αθροιστικής συχνότητας με σκοπό την περιγραφή των πληθυσμών των ρηγμάτων. Τα διαγράμματα δηλώνουν μια πολυκλασματική κατανομή, που αντιπροσωπεύει διαφορετικούς πληθυσμούς ρηγμάτων που αλληλεπιδρούν ή μια εκθετική κατανομή που δείχνει ένα πρώιμο στάδιο κορεσμού των ρηγμάτων. Στη συνέχεια, κατασκευάστηκαν διαγράμματα της μέγιστης κατακόρυφης μετατόπισης των τμημάτων με το μήκος (D-L), με σκοπό να προσδιοριστεί σε ποιο στάδιο σύνδεσης βρίσκονται οι συγκεκριμένες ζώνες. Τέλος εξετάστηκαν και συσχετίστηκαν τα γεωμετρικά χαρακτηριστικά των ζωνών μεταβίβασης (μήκος κλιμάκωσης, μήκος επικαλυπτόμενων ή μη τμημάτων), με σκοπό την εξαγωγή συμπερασμάτων για την ικανοποίηση ή μη κριτηρίων αλληλεπίδρασης των τμημάτων και της πιθανής σύνδεσης αυτών. Η κατανόηση του ρόλου της τμηματοποίησης και του τρόπου σύνδεσης των τμημάτων των ρηξιγενών ζωνών μπορεί να βοηθήσει σημαντικά στην εκτίμηση της σεισμικής επικινδυνότητας μιας περιοχής, στην κατανόηση των ιζηματογενών διαδικασιών μπροστά από τα ρήγματα και στον προσδιορισμό παγίδων ρευστής φάσης και της μετανάστευσής τους, μιας και οι ζώνες μεταβίβασης δύναται να αποτελούν περιοχές διαφυγής ή εμπόδια στη ροή των ρευστών. / The fault zones typically contain discontinuous, sub parallel, banded west fault segments separated by zones of transfer (relay zones). As fault zones evolve, sections of these zones can interact mechanically and gradually come together, forming larger structures with increasing strain. The way the parts interact during the development zones, has been the subject of several investigations. But even today our knowledge of the processes of interaction and connection of parts is limited. In this work, to study the segmentation and how to connect normal faults, fault zones were selected Arkitsa the Evian Gulf. The Rift these areas have WNW direction. The choice of region was based on the significant tectonic activity in the last 1.5 million years and its importance of Neotectonics evolution of Central Greece. In this thesis calculated parameters indirectly reflect the distribution of stress around the cracks, as is the vertical displacement (D), the length of the fault (L), the number of sections of a Rift Zone (n), overlapping (OL) The scaling (S) and the length of the zone transfer (Lr). These parameters are indicators of the degree of association between the Rift and parts of the degree of maturity of an active zone. So, first used Digital Elevation Models (DEM) from topographic profiles constructed in each fault zone in order to calculate the vertical displacement of faults both in the individual sections and transfer zones and the distribution of displacement along the ceiling; base faults. We also determined the geometry of the zone transfer between the Rift segments in order to examine the ways to connect the parts to calculate the length of non-overlapping zones (underlapping zone), zones of overlap (overlap zone) and step (separation / spacing). The lengths of the parts of Rift zones were shown in cumulative frequency diagrams to describe the populations of faults. The charts indicate a multi-fractional distribution, representing different populations of faults that interact or an exponential distribution that shows an early saturation of the faults. Then constructed graphs of the maximum vertical displacement of the segments with the length (DL), in order to determine at what stage are the actual connection zones. Finally examined and correlated with the geometrical characteristics of the transfer belt (length scaling, length or non-overlapping segments) in order to draw conclusions on the satisfaction or non-interaction criteria section and the possible connection of these. Understanding the role of segmentation and how to connect the parts of the Rift zones can help considerably in assessing the seismic hazard of a region, an understanding of sedimentary processes in front of the faults and identify traps liquid phase and their migration, since the transfer zones may be areas of escape or barriers to the flow of fluids.

Τα μεσογειακά οικοσυστήματα, με τη δομή και σύνθεση που γνωρίζουμε, οφείλουν την ύπαρξή τους, στα επεισόδια των πυρκαγιών, που συμβαίνουν ανά τακτά χρονικά διαστήματα. Στις μεγάλες δασικές πυρκαγιές, οφείλεται το όλο και μεγαλύτερο ποσοστό της συνολικής καμένης έκτασης ανά έτος στη χώρα μας, και κυρίως, κατά τις τελευταίες δύο δεκαετίες, σε αυτές που συμβαίνουν, όταν επικρατούν ακραία μετεωρολογικά φαινόμενα το καλοκαίρι. Ο νομός Ηλείας, θεωρείται από τους πλέον πυρόπληκτους της Ελλάδας. Για τον λόγο αυτό, επιλέξαμε να μελετήσουμε μια περιοχή, μεσογειακού οικοσυστήματος του Νομού, η οποία έχει πληγεί πολλές φορές στο παρελθόν από τις πυρκαγιές και όλα τα επακόλουθα που τις συνοδεύουν, έκτασης 111.912.638 m . Αυτή η μελέτη, επιχειρεί να παρουσιάσει τις αλλαγές των χρήσεων γης, αλλά και της αναγέννησης μετά από πυρκαγιές, χρησιμοποιώντας τα δορυφορικά στοιχεία της τηλεπισκόπησης, που συλλέχθηκαν σε δύο διαφορετικές χρονικές στιγμές, σε συνδυασμό με τα Συστήματα Γεωγραφικών Πληροφοριών (GIS). Καταγράψαμε την επικρατούσα εικόνα της βλάστησης και αναγέννησης, καθώς και οποιαδήποτε άλλη χρήσιμη, οικολογικής σημασίας πληροφορία, σε 45 δειγματοληπτικές επιφάνειες. Μετά την ολοκλήρωση του προσδιορισμού των φυτικών taxa, όλες οι φυτοληψίες καταχωρήθηκαν στη βάση δεδομένων Turboveg for Windows. Για την ομαδοποίηση των δειγματοληψιών, χρησιμοποιήθηκε η μέθοδος Twinspan. Στη συνέχεια, μέσω του στατιστικού πακέτου PC-ORD 5.0, χρησιμοποιήθηκε, η μέθοδος Detrended Correspondence Analysis (DCA) για τη δημιουργία της γραφικής τους απεικόνισης, ενώ για τον προσδιορισμό των σχέσεων μεταξύ των περιβαλλοντικών μεταβλητών και των μονάδων βλάστησης της περιοχής, έγινε χρήση της μεθόδου Canonical Correspondence analysis (CCA). Οι περιβαλλοντικές μεταβλητές που χρησιμοποιήθηκαν είναι: υπόστρωμα, υψόμετρο, κλίση, προσανατολισμός, αριθμός πυρκαγιών. Με τη χρήση του ArcGIS 9.3 έγιναν θεματικοί χάρτες των καλύψεων/χρήσεων γης πριν και μετά την φωτιά του 2007. Επίσης, έγινε απεικόνιση του ανάγλυφου της περιοχής μελέτης, με τη χρήση ισοϋψών καμπύλων. Έτσι δημιουργήθηκε το Ψηφιακό Υψομετρικό Μοντέλο Εδάφους (ΨΥΜΕ ή DEM: Digital Elevation Model) για την περιοχή. Επίσης παράχθηκε το ΤΙΝ της περιοχής (Triangulated Irregular Network ή Δίκτυο ακανόνιστων τριγώνων). Από το ΤΙΝ παράχθηκαν ο χάρτης κλίσεων, ο χάρτης εκθέσεων και ο χάρτης υψομέτρων. Για να πραγματοποιηθούν τα παραπάνω χρησιμοποιήθηκε η εφαρμογή 3D Analyst στο περιβάλλον του ArcMap, πρόγραμμα ArcGIS 9.3. Τέλος, έγινε Μεταταξινομική σύγκριση (POST- CLASSIFICATION COMPARISON) δορυφορικών εικόνων του Landsat 7 από την περιοχή μελέτης, των ετών 2006 και 2011. Χρησιμοποιήσαμε τα Γεωγραφικά Συστήματα Πληροφοριών και την Τηλεπισκόπηση, επειδή συνιστούν ένα πολύ σημαντικό εργαλείο στη διαχείριση του περιβάλλοντος. Η διαχρονική παρακολούθηση των μεταβολών που συμβαίνουν, μέσω αυτών των συστημάτων, προσφέρει σημαντικά πλεονεκτήματα στον καθορισμό των μελλοντικών δράσεων. Τα αποτελέσματα, μέσα από τη χρήση αυτών των τεχνολογιών, έδειξαν αλλαγές στην εικόνα της βλάστησης πριν και μετά από τις καταστροφικές πυρκαγιές του 2007. Προέκυψε ότι, η αναγέννηση της Χαλεπίου πεύκης (Pinus halepensis) είναι ιδιαιτέρως ικανοποιητική, γεγονός που αποδίδεται αφενός, στους προσαρμοστικούς μηχανισμούς που διαθέτει το συγκεκριμένο είδος και αφετέρου, στις ευνοϊκές συνθήκες ανάπτυξης που επικρατούν στην περιοχή. / Mediterranean ecosystems, with their known structure and composition, owe their existence to the repeated at regular intervals fires. Large forest fires contribute to the increasing percentage of the total area burned per year in our country, especially those of the last two decades which occur when extreme weather conditions prevail in summer. The prefecture of Ilia is considered as one of the most fire affected regions in Greece. For this reason we chose to study an area of a prefecture’s Mediterranean ecosystem expanding over 111.912.638m2, which has been affected several times in the past by fires and all the consequences that accompany them. This study attempts to present the changes in land uses and forest regeneration after fires, using satellite remote sensing data collected at two different times in combination with Geographic Information Systems (GIS). We recorded the prevailing vegetation and regeneration status, as well as any other useful information of ecological importance, by means of 45 sampling plots. After the plant taxa identification, all samplings data were registered in the Turboveg for Windows database and the Twinspan (Two-way indicator species analysis) method was used in order to group the plots. Furthermore, the DCA (Detrended Correspondence Analysis) method was used for the creation of a graphic display of the vegetation data, while, in order to determine the relationships between environmental variables and vegetation units of the area, the CCA (Canonical Correspondence analysis) method was used, both through the statistical package PC-ORD 5.0. The environmental variables used are: substrate, elevation, slope, exposure and number of fires. Using ArcGIS 9.3 we made thematic land use/cover maps before and after the fire of 2007. The 3-D reconstruction of the study area was also made using contour curves, and from this the Digital Elevation Model (DEM) for the study area was derived. The TIN (Triangulated Irregular Network, Network jagged triangles) of the study area was also created as well as the derived slope-, exposure- and altitude maps. To accomplish all the above, we used the 3D Analyst application in the environment of ArcMap, program ArcGIS 9.3. Finally, we compared images (post-classification comparison) of the Landsat 7 from the study area for the years 2006 and 2011. We used Geographic Information Systems and Remote Sensing, since they are very important technologies, used as tool for environmental management. Monitoring through these systems the changes that occur over time, we obtain significant advantages in determining future actions. The results obtained through the use of these technologies, have shown changes in the vegetation before and after the devastating fires of 2007; furthermore, the regeneration of Pinus halepensis is very satisfactory, due both to the adaptive mechanisms of the species and to the favorable growing conditions prevailing in the study area.

The Yorkshire Dales National Park contains some of the UK’s most extensive and well-preserved prehistoric landscapes. Of particular interest are a number of coaxial field systems, which cover hundreds of hectares and exhibit significant time-depth, yet remain little studied and poorly understood in relation to comparable resources elsewhere in Britain and north western Europe. This research aims to address this situation, bringing together existing disparate source materials for the first time, alongside supplementary field observation, to develop a detailed record of the coaxial landscapes. Using a Geographic Information System to manage, interpret and interrogate the combined datasets, analysis focuses on form and character, and explores prehistoric use of the iconic landscape. The study seeks to enhance our knowledge and understanding of the landscapes’ place in space and time, setting them against the backdrop of systems elsewhere, and attempts to place them within the context of later prehistoric society. The research, conducted in association with the Yorkshire Dales National Park Authority, also informs the management and public understanding of the archaeological resource of the Dales via the Historic Environment Record.

Made available in DSpace on 2014-06-11T19:29:13Z (GMT). No. of bitstreams: 0 Previous issue date: 2007-03-02Bitstream added on 2014-06-13T19:17:36Z : No. of bitstreams: 1 cuelbas_lp_me_ilha.pdf: 2115644 bytes, checksum: f3080604473d2817e7f0854ab397b883 (MD5) / Ctgeo-Lins / O estudo foi realizado na microbacia do Córrego Campestre que está localizada no Município de Lins, Estado de São Paulo, compreendendo uma área de 80 km2. Nessa área está inserida a Cidade de Lins com uma área urbana de 20 km2, perfazendo 25% da microbacia em estudo. Através das coletas e análises de amostras de água, no período de seca e chuva, dos principais córregos da microbacia do Córrego Campestre, foi possível obter resultados do Índice de Qualidade da Água - ÍQA. Com bases nos resultados combinados, com as informações obtidas através das imagens de satélite e fotos dos locais, constatou-se que os efeitos das atividades antrópicas principais desenvolvidas na região urbana, a urbanização e lançamentos de resíduos nos cursos d'água sem nenhuma forma de tratamento, provocaram elevados teores de matéria orgânica e coliformes, comprovado através da analise das características físico-químicas e bacteriológicas. Constatou-se também, a partir das observações feitas in loco, fortes evidências de degradação da microbacia, principalmente por um antigo lixão que está localizado às margens do Córrego Campestre. Através da analise das imagens de satélite, utilizando um Sistema de Informações Geográficas - SIG, foi possível identificar a inexistência de vegetação ciliar, o que contribuiu para o carregamento de resíduos poluentes do solo aos cursos d'água após as chuvas intensas. / The study it was carried through in the microwatershed of the Campestre Stream that is located in the region of the Lins city, São Paulo State, understanding an area of 80 km 2. In this area the Lins city with an urban area of 20 is inserted km 2, with about 25% of the microwatershed in study. Through the collections and analyze chemistry of samples of water, in the drought periods and rain, of the main streams in the microwatershed of the Rural Stream, it was possible like this to obtain results of the Index of Quality of the Water - ÍQA and analyses of the parameters physical, chemical and biological. Those combined results with the information obtained through the satellite images and pictures of the places, it was verified that the effects of the activities main human actions developed in the urban area, the urbanization and releases of residues in the courses of water without any handling form, they provoked high tenors of organic matter, coliformes and nutritious, proven through it analyzes it of the physiochemical and bacteriological characteristics. It was also verified, starting from the observations done in loco , strong evidences of degradation of the microwatershed mainly for an old deposit garbage that is located to the margins of the Rural Stream. Through it analyzes her/it of the satellite images, being used... (Complete abstract click electronic access below)