發(fā)布時間：2018-06-18 10:21

  本文選題：岷江上游 + 干旱河谷　； 參考：《西南科技大學》2015年碩士論文

【摘要】：岷江上游是岷江流域的生命線,是成都平原及長江流域的生態(tài)環(huán)境屏障,其生態(tài)環(huán)境質量及生態(tài)安全狀況直接關系到成都平原及四川盆地丘陵區(qū)的可持續(xù)發(fā)展。多年來,自然環(huán)境的惡化以及人類活動的加劇對岷江上游的生態(tài)環(huán)境造成了強烈干擾和破壞,導致生態(tài)環(huán)境質量下降,生態(tài)安全受到威脅。研究針對岷江上游獨特的區(qū)域特征,逐漸退化的自然環(huán)境以及日趨尖銳的人類需求與自然資源之間的矛盾,以GIS和RS作為技術支撐,以遙感數(shù)據(jù)和其他多源空間數(shù)據(jù)為基礎數(shù)據(jù),提取了1994年、2001年、2007年、2009年、2013年五個時期20年岷江上游干旱河谷的范圍,分析研究其演化特征,得出干旱河谷演化波動性較強,受人類干擾較明顯;利用層次分析法構建了岷江上游生態(tài)安全評價指標體系,并確定各指標的權重值,利用綜合指數(shù)法計算了2001年和2009年各評價單元的生態(tài)安全指數(shù),對岷江上游地震前后生態(tài)安全狀況及其變化進行了評價分析,得出岷江上游生態(tài)安全狀況有變好的趨勢,且干旱河谷和生態(tài)安全在空間分布和屬性特征上都存在相關性,兩者相互影響,相互制約。對岷江上游生態(tài)安全變化特征及驅動因素的研究,對岷江上游甚至整個長江流域生態(tài)環(huán)境治理與恢復工作的實施都具有指導意義,亦為社會經(jīng)濟發(fā)展制定決策提供基礎的科學參考。
[Abstract]:The upper reaches of Minjiang River is the lifeline of Minjiang River basin and the ecological environment barrier of Chengdu Plain and Yangtze River basin. Its ecological environment quality and ecological security condition are directly related to the sustainable development of Chengdu Plain and Sichuan Basin hilly area. Over the years, the deterioration of the natural environment and the intensification of human activities have caused strong interference and destruction to the ecological environment in the upper reaches of Minjiang River, resulting in the deterioration of the quality of the ecological environment and the threat to the ecological security. In view of the unique regional characteristics of the upper reaches of Minjiang River, the gradual degradation of the natural environment and the increasingly sharp contradiction between human needs and natural resources, GIS and RS are taken as the technical support. Based on remote sensing data and other multi-source spatial data, the range of arid valleys in the upper reaches of Minjiang River in 1994, 2001, 2007, 2009 and 2013 was extracted, and its evolution characteristics were analyzed and studied. The ecological security evaluation index system of the upper reaches of Minjiang River was constructed by AHP, and the weight of each index was determined, and the ecological security index of each evaluation unit in 2001 and 2009 was calculated by comprehensive index method. The ecological security status and its changes before and after the earthquake in the upper reaches of Minjiang River are evaluated and analyzed. It is concluded that the ecological security situation in the upper reaches of Minjiang River has a tendency to improve, and there is a correlation between the spatial distribution and the attribute characteristics of the arid valley and ecological security. The two influence and restrict each other. The study on the characteristics and driving factors of ecological security in the upper reaches of Minjiang River is of guiding significance to the implementation of ecological environment control and restoration work in the upper reaches of Minjiang River and even the whole Yangtze River basin. Also for social and economic development to provide a basis for decision-making scientific reference.
【學位授予單位】：西南科技大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：X826;X171.1

【參考文獻】

相關期刊論文 前6條

1 楊兆平;常禹;;我國西南主要干旱河谷生態(tài)及其研究進展[J];干旱地區(qū)農(nóng)業(yè)研究;2007年04期

2 周國富;生態(tài)安全與生態(tài)安全研究[J];貴州師范大學學報(自然科學版);2003年03期

3 蔡勁松,萬新南;岷江上游生態(tài)環(huán)境地質概況及其質量的模糊評價[J];水土保持研究;2004年02期

4 林彰平,劉湘南;東北農(nóng)牧交錯帶土地利用生態(tài)安全模式案例研究[J];生態(tài)學雜志;2002年06期

5 王春明,包維楷,陳建中,孫輝,謝嘉穗;岷江上游干旱河谷區(qū)褐土不同亞類剖面及養(yǎng)分特征[J];應用與環(huán)境生物學報;2003年03期

6 張雷,劉慧;中國國家資源環(huán)境安全問題初探[J];中國人口.資源與環(huán)境;2002年01期

相關碩士學位論文 前1條

1 陳鑫;基于決策樹技術的遙感影像分類研究[D];南京林業(yè)大學;2006年

，

本文編號：2035145