本研究採行塊莖思維為研究取徑探勘台灣另類／獨立媒體的新聞實踐。考量到時間限制且本研究不以發掘台灣另類／獨立媒體的群像為研究目的，研究者選擇以《上下游新聞市集》新聞部門為研究案例，藉由參與觀察法、深度訪談法深描上下游新聞如何產製報導、歷經哪些轉變、內部如何互動等與新聞產製有關的面向，並從「與變共處」的塊莖生成觀點，檢視其「以變為常」的新聞實踐面貌與生成。 研究發現，上下游新聞會隨著組織人事流動、讀者閱讀習慣改變、內容市場競爭等內外情境變動而調整組織編制與報導產製模式，但因內部成員對於調整方向與幅度未能協商出共識，內部衝突因而日增。對此，上下游新聞目前試圖藉由共同守門模式以及制度化的組織運作降低內部衝突發生機會。 再者，從上下游新聞與域外物的互動經驗可以發現，臉書等社群平台是上下游新聞重要的消息來源與露出管道，對上下游新聞的報導產製影響重大。 另一方面，隨著組織受到各種內外情境變動的刺激，上下游新聞成員逐漸展現各自對於媒體角色定位的見解差異，成員紛紛在突破疆域界線的分裂點上，表明自己如何認知媒體角色定位，並由此開創不同於以往的新聞實踐樣貌。 / This thesis takes the notion of rhizome as a research approach to explore the journalistic practices of alternative media in Taiwan. Considering time limitation and the purpose of this research, the researcher adopts the methods of depth interview and participable observation to examine the journalistic practice of research object in this thesis—“News & Market.” At the same time, the researcher looks into journalistic practices via Deleuze and Guattari’s notion of “rhizome” and “becoming.” According to the study, along with the context change, News & Market constantly adjusts its organizational structure and the way it produces news. However, since journalists cannot often reach an agreement altogether, the organizational conflicts would gradually increase. For now, News & Market manages to reduce the possibilities of organizational conflicts through the ways of “joint gatekeeping production mode” and “institutional operation of the organization.” Moreover, the study indicates that social media platform, taking the example of Facebook, has a huge influence on the news production of News & Market. At last, because of the growing influence of context change, the journalists of News & Market show different cognition on their role positions. When there is the time of different points of view, the journalists would cross the border to provide different ideas and develop the journalistic practices that are different from the past.