本文關(guān)鍵詞：南水北調(diào)中線工程對漢江中下游流域生態(tài)環(huán)境影響的綜合評價，由筆耕文化傳播整理發(fā)布。

摘要：

南水北調(diào)中線T程的實施,對漢江中下游流域的生態(tài)環(huán)境會造成一系列的影響,對其進行綜合評價具有重要意義.在探討評價指標(biāo)體系建立原則的基礎(chǔ)上,構(gòu)建了南水北調(diào)中線工程對漢江中下游流域生態(tài)環(huán)境影響的綜合評價指標(biāo)體系;對各指標(biāo)的影響分值進行了計算,并采用層次分析法了計算各指標(biāo)的權(quán)重,在此基礎(chǔ)上采用指標(biāo)加權(quán)求和法對生態(tài)環(huán)境影響進行綜合評價.評價結(jié)果表明:南水北調(diào)中線工程的實施,對漢江中下游流域生態(tài)環(huán)境的綜合影響程度為-37.91%～-64.46%,相比調(diào)水前,生態(tài)環(huán)境處于強烈或明顯負(fù)影響狀態(tài);分變量的影響程度排序依次為水質(zhì)變量、土壤地質(zhì)變量、社會生產(chǎn)變量、水生生物變量、水資源變量和氣候變量,其中對水質(zhì)變量、土壤地質(zhì)變量、社會生產(chǎn)變量和水生生物變量的影響幅度上限均超過了-40%,對水資源變量的影響幅度也超過了-20%,影響較大,而對氣象變量的影響幅度幾乎為零.

Abstract： 

The South to North Water Transfer Project, one of the four largest trans-century pro-jects in China, may produce a series of influence on eco-environment in the middle and lower reaches of the Hanjiang River. So it will be of great significance to carry out an overall evaluation of this project. Based on the principle of building evaluation index system discussed in advance, an overall evaluation index system was built to assess the effects of the south to north water trans-fer project on eco-environment in the middle and lower reaches of the Hanjiang River Basin. Af-ter building an index core quantification model, the score of each index was calculated and the weight of each indicator was decided by the Analytic Hierarchy Process (AHP) method. Then weighted summation of each index was used to make the overall evaluation of the project on eco-environment. The result showed that the construction of the project would produce -37.91% ～ -64.46% of effects on the change of eco-environment over the middle-lower Hanjiang River basin, which should have a strong or significant negative impact. And among the six eco-environment variables, the order from strong to weak in the extent was water equality, soil-geological variables, society production, aquicolous biology, water resource and climate respectively. In these variables, the upper effect magnitude of the project on water equality, social production, soil-geological and aquicolous biology variables exceed -40% and on water resource variable also exceed -20%. In terms of the five levels of eco-environmental impacts, including no, minor, significant, strong and extreme impacts, water equality was in the state of extreme or strong negative impact, soil-geolog-ical variable belonged to a strong, significant or extreme negative impact and social production be-longed to a strong or significant negative impact state, aquicolous biology variables received a strong negative impact, water resource was in the state of significant negative impact, but climate in the minor negative impact state and the magnitude was close to zero.

  本文關(guān)鍵詞：南水北調(diào)中線工程對漢江中下游流域生態(tài)環(huán)境影響的綜合評價，，由筆耕文化傳播整理發(fā)布。