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黃土丘陵區(qū)中尺度流域水土流失治理環(huán)境效應(yīng)評估
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中國科學(xué)院戰(zhàn)略性先導(dǎo)科技專項(xiàng)（XDA05060300）;中國科學(xué)院百人計(jì)劃支持項(xiàng)目


Ecological and Environmental Assessment on the Effects of Water and Soil Loss Comprehensive Harness in Meso-scale Watershed in Loess Hilly Region
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    摘要:

    基于DPSIR概念模型,，構(gòu)建中尺度水土流失綜合治理生態(tài)環(huán)境效應(yīng)評價(jià)指標(biāo)體系,，對退耕還林（草）實(shí)施的生態(tài)環(huán)境效應(yīng)進(jìn)行評估。結(jié)果表明：生態(tài)恢復(fù)環(huán)境效應(yīng)綜合值在退耕還林（草）試驗(yàn),、實(shí)施和恢復(fù)階段分別較評價(jià)初期增加了30%、43%和56%,；環(huán)境分項(xiàng)值則減小了6%,、20%和22%，社會分項(xiàng)值增加了43%,、114%和143%,；經(jīng)濟(jì)分項(xiàng)值增加了29%、129%和129%,。退耕還林（草）,、耕地壓力、輸沙模數(shù)和侵蝕性降水量等驅(qū)動(dòng)和壓力因子是生態(tài)恢復(fù)環(huán)境響應(yīng)的敏感指標(biāo),，退耕還林（草）對生態(tài)環(huán)境的作用需要一定的時(shí)期才能被生態(tài)環(huán)境所響應(yīng),。

    Abstract:

    An index system was constructed for accessing eco-environmental effect of water and soil loss comprehensive harness in meso-scale based on the DPSIR model. The eco-environmental effect of grain for green project was accessed. The results showed that comprehensive value of environmental effect of ecological restoration increased by 30% in test stage, 43% in formal implement stage, 56% in restoration stage, respectively compared with those in the initial stage of evaluation; whereas the values of environmental subentry decreased by 6%, 20% and 22%, respectively; values of social subentry increased by 43%, 114% and 143%, respectively; the values of economic subentry increased by 29%, 129% and 129%, respectively. Grain for green, farmland pressure, sediment transport modulus and erosive precipitation were sensitive indices which indicated that there was a hysteretic nature of eco-environmental changes compared with driving and pressure factors. Impacts of the project of grain for green for eco-environment to response usually need a period of time.

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王兵,劉國彬,張光輝,楊勤科,楊艷芬.黃土丘陵區(qū)中尺度流域水土流失治理環(huán)境效應(yīng)評估[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2012,43(7):28-35. Wang Bing, Liu Guobin, Zhang Guanghui, Yang Qinke, Yang Yanfen. Ecological and Environmental Assessment on the Effects of Water and Soil Loss Comprehensive Harness in Meso-scale Watershed in Loess Hilly Region[J]. Transactions of the Chinese Society for Agricultural Machinery,2012,43(7):28-35.

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  • 在線發(fā)布日期: 2012-07-02
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