The Upper Pearl River and its watershed is the main source of water flowing into the Ross Barnett Reservoir, the City of Jackson’s major drinking water supply. Groundwater characterization of the watershed was achieved by analyzing viable groundwater wells and a groundwater spring best representing the land use and land cover extraction map created. Incorporated surface geology demarcated specific stratum, helping describe the different hydrogeochemical interactions observed. Analysis indicated that chloride and nitrate exceeded the Maximum Contamination Levels (MCLs) possibly contributing to eutrophication in the reservoir. Several of the metal and trace elements analyzed were below the MCLs, with the exceptions of manganese, aluminum, and iron. No pharmaceuticals, pesticides, or industrial residues exists in Carthage and Philadelphia’s groundwater, the largest cities in the region. Conclusively, the watershed’s groundwater contains high concentrations of anions along with metal concentrations associated with the ferruginous sandy-clay surface geology moving closer to the reservoir.

by Chan, Cheung-Wai. / Thesis (M.Phil.)--Chinese University of Hong Kong, 1994. / Includes bibliographical references (leaves 184-189). / ACKNOWLEDGMENTS --- p.ii / LIST OF ILLUSTRATIONS --- p.iii / LIST OF TABLES --- p.iv / Chapter Chapter One --- Introduction --- p.1 / Chapter 1.1 --- Introduction / Chapter 1.2 --- Background / Chapter 1.3 --- Objectives of this study / Chapter 1.4 --- The Structure of the thesis / Chapter Chapter Two --- Literature Review --- p.9 / Chapter 2.1 --- Introduction / Chapter 2.2 --- Rural-urban fringe / Chapter 2.3 --- Characteristics of land use changes in the fringes / Chapter 2.4 --- Factors affecting the mechanism of land use changes in the urban fringe / Chapter 2.5 --- Parties involved in land use change decision / Chapter 2.6 --- Land use in the urban fringe of Zhujiang Delta / Chapter 2.6.1 --- Cities' in China / Chapter 2.6.2 --- Urban fringes in China ---the case of Zhujiang Delta / Chapter 2.6.3 --- Land use pattern in the Zhujiang Delta / Chapter Chapter Three --- Methodology --- p.29 / Chapter 3.1 --- Introduction --- Change detection techniques of land use changes / Chapter 3.1.1 --- A concept of change detection / Chapter 3.1.2 --- Change detection techniques / Chapter 3.2 --- Method employed to detect land use change in Zhujiang Delta / Chapter 3.3 --- Procedures / Chapter 3.3.1 --- Data description / Chapter 3.3.2 --- Preprocessing / Chapter a. --- Atmospheric correction / Chapter b. --- Image Registration / Chapter i. --- Spatial interpolation / Chapter ii. --- Intensity interpolation / Chapter 3.3.3 --- Image differencing / Chapter 3.3.4 --- Post-classification comparison / Chapter a. --- Land Use / Land Cover classification scheme / Chapter b. --- Definitions and image characteristics of land / Land cover classes / Chapter c. --- Supervised classification / Chapter d. --- Training sites / Chapter e. --- Maximum likelihood classifier / Chapter f. --- Accuracy assessment / Chapter g. --- post-classification comparison / Chapter Chapter Four --- Study Area --- p.64 / Chapter 4.1 --- Physical and agricultural landscape of Zhujiang Delta ---a general description / Chapter 4.1.1 --- Physical landscape / Chapter 4.1.2 --- Urban develoment / Chapter 4.1.3 --- Agricultural landscape / Chapter 4.2 --- Shunde / Chapter 4.2.1 --- Agricultural land use / Chapter 4.2.2 --- The image of Shunde / Chapter 4.3 --- Dongguan / Chapter 4.3.1 --- Agricultural land use / Chapter 4.3.2 --- The image of Dongguan / Chapter 4.4 --- Guangzhou / Chapter 4.4.1 --- Agricultural land use / Chapter 4.4.2 --- The image of Guangzhou / Chapter 4.5 --- Land use changes expected within the study area / Chapter Chapter Five --- Results and discussions --- p.83 / Chapter 5.1 --- Image differencing / Chapter 5.2 --- Results of classifications / Chapter 5.2.1 --- Shunde / Chapter 5.2.2 --- Dongguan / Chapter 5.2.3 --- Guangzhou / Chapter 5.3 --- Post-classification comparison change detection / Chapter Chapter Six --- Land use chancre analysis of the urban fringesin Zhujiang Delta --- p.107 / Chapter 6.1 --- Framework for discussion / Chapter 6 .2 --- Land use / land cover changes in Shunde / Chapter 6.2.1 --- Rural-to-urban changes / Chapter 6.2.2 --- Rural-to-rural changes / Chapter 6. 3 --- Land use / land cover changes in Dongguan / Chapter 6.3.1 --- Rural-to-urban changes / Chapter 6.3.2 --- Rural-to-rural changes / Chapter 6.4 --- Land use / land cover change in Guangzhou / Chapter 6.4.1 --- Rural-to-urban changes / Chapter 6.4.2 --- Rural-to-rural changes / Chapter 6 .5 --- Comparson of land use changes of the study area / Chapter 6.5.1 --- Land-use change comaprison / Chapter 6.5.2 --- Rural-to-urban changes / Chapter 6.5.3 --- Rural-to-rural changes / Chapter a. --- Origins of wet cropland and market gardening / Chapter b. --- Origins of woodland / Chapter c. --- Origins of fish ponds / Chapter 6.5.4 --- Conclusions / Chapter Chapter Seven --- Conclusion --- p.175 / Chapter 7.1 --- Land use change in the urban fringes in the Zhujiang Delta ---a comparison / Chapter 7.2 --- the applicability of western theories on land use change to the Zhujiang Delta / Chapter 7.3 --- Remote sensing method as an application for land use change monitoring in China

Photocopy of typescript. / Digitized by Kansas Correctional Industries

Call number: LD2668 .T4 1978 M92 / Master of Science

Call number: LD2668 .T4 1979 L35 / Master of Science

Call number: LD2668 .T4 1979 N38 / Master of Science

Call number: LD2668 .T4 1986 B56 / Master of Science / Grain Science and Industry

published_or_final_version / Earth Sciences / Doctoral / Doctor of Philosophy

Physiological and agronomic responses of two pearl millet (Pennisetum americanum L. K. Schum) parents and their hybrid were evaluated under different water levels on a Brazito sandy loam soil at Tucson, Arizona in 1983 and 1984. A line source sprinkler irrigation gradient was used to create the treatments. Soil moisture and physiological parameters were measured under field conditions at weekly intervals. Growth was analyzed every other week, while yield and yield components were evaluated at the end of the experiment. Harvest Index, drought tolerance index, and water use efficiency (WUE) were calculated. Percent crude protein of seeds was analyzed, and photosynthesis was measured in 1984 only. Regression analysis was used to compare the performance of the cultivars for stability. Water stress significantly affected all parameters measured, and the stress effects were more pronounced in 1983. There was no significant difference between entries at each water level for most parameters. Plant height, dry matter, and total leaf area decreased as watering level decreased. The leaf area of the hybrid was significantly higher at high water level in 1983. Firing ratio was increased significantly by stress in both seasons and was significantly lower for the male at low water level in 1983. Yield and yield components were reduced significantly by stress in both seasons, which was reflected in the reduced harvest index. Relative yield of dry matter was higher for the male in both seasons. The hybrid had the highest drought tolerance index in 1983, while the female had the highest drought tolerance index in 1984. WUE of dry matter increased with stress, while WUE of grain yield decreased with stress in both seasons. The significant reduction in transpiration was 57, 56 and 66% in 1983 and 45, 53, and 52% in 1984 for female, male, and hybrid respectively. Leaf diffusive resistance and leaf temperature were increased by water stress in both seasons. Stability regression analysis provided no adequate differentiation among cultivars. The percent crude protein (weight basis) was increased significantly by stress by 38, 43, and 28% in 1983 and by 47, 33, 46% for female, male, and hybrid, respectively.

A pearl millet hybrid (Pennisetum americanum (L.) Leeke) and its two parents were evaluated for their photosynthetic rates, diffusive resistance, canopy temperature, transpiration rates, stomatal aperture and frequency, and growth responses to various irrigation levels. The experiments were conducted on Brazito sandy loam soil at The University of Arizona Campus Agricultural Center, Tucson, AZ in 1985 and 1986. A sprinkler was used to create water treatments. Photosynthetic rates were not significantly different among genotypes at each water level. Transpiration rate, diffusive resistance, canopy minus ambient temperature, and photosynthetic rate were all significantly related to water treatments with correlation coefficients .ranging from 0.91 to 0.98. Under water stress, the female transpired more, exhibited lower diffusive resistance and had a cooler canopy compared to the hybrid and male parent. Based on these characteristics, the female seemed to expend more energy on heat dissipation than yield improvement. Water stress reduced stomatal aperture but increased stomata! frequency. The hybrid had significantly higher stomatal frequency at all water levels and smaller aperture between 63 and 125 mm irrigation levels. Dry matter, leaf area, leaf area index, and plant height were also reduced by water stress. In general, the hybrid and the male parent produced significantly more dry matter and were significantly taller than the female. The female parent had significantly higher leaf area and leaf area index late in 1986. Grain yield was reduced by water stress. Both years, the female grown under optimum moisture conditions had approximately half the grain yield as compared to the male and the hybrid. The major components contributing to the higher grain yield of the hybrid and male were larger panicles and more productive tillers.