本文選題：景觀尺度 + 異質(zhì)性��； 參考：《中國科學院研究生院(東北地理與農(nóng)業(yè)生態(tài)研究所)》2013年碩士論文

【摘要】：濕地是 地球之腎‖，對氮、磷等污染物質(zhì)具有的去除作用，近年來由于人類活動的加劇造成濕地驟減，濕地生態(tài)功能遭到嚴重破壞，基于此濕地過濾功能的評估及其方法研究具有重要的理論和實際意義。 針對目前濕地氮過濾功能研究多集中均質(zhì)斑塊難以模擬異質(zhì)性斑塊氮過濾功能的不足，本文以均質(zhì)斑塊氮去除原理為基礎(chǔ)結(jié)合GIS水文模型，，提出了景觀尺度濕地生態(tài)系統(tǒng)氮過濾能力的評估方法。本文選取濃江河部分流域作為研究區(qū)對方法進行驗證，通過對研究區(qū)1999年與2007年氮過濾功能進行評估。 結(jié)果表明方法可以描述景觀格局變化引起的氮過濾功能變化，可以對景觀尺度下濕地氮過濾功能進行很好的評估。
[Abstract]:Wetland is the kidney of the earth. It can remove pollutants such as nitrogen and phosphorus. In recent years, due to the intensification of human activities, the wetland has been drastically reduced, and the ecological function of the wetland has been seriously damaged. It is of great theoretical and practical significance to evaluate and study the filtering function of this wetland. It is difficult to simulate the nitrogen filtration function of heterogeneous patches based on the principle of nitrogen removal from homogeneous patches and GIS hydrological model. A method for evaluating the nitrogen filtration capacity of wetland ecosystem on landscape scale was proposed. In this paper, some basins of Nongjiang River were selected as the study area to verify the method, and the nitrogen filtration function in 1999 and 2007 was evaluated. The results show that the method can describe the change of nitrogen filtration function caused by landscape pattern change, and can be used to evaluate the nitrogen filtration function of wetland in landscape scale.
【學位授予單位】：中國科學院研究生院(東北地理與農(nóng)業(yè)生態(tài)研究所)
【學位級別】：碩士
【學位授予年份】：2013
【分類號】：X171;P208

【參考文獻】

中國期刊全文數(shù)據(jù)庫 前1條

1 丁飛;潘劍君;;分布式水文模型SWAT的發(fā)展與研究動態(tài)[J];水土保持研究;2007年01期

本文編號：1916431