水电梯级开发对陆域生态弹性力的影响研究  

Impacts of small cascaded hydropower plants on terrestrial ecological resilience in the Qiuxiangjiang River basin

作　　者：刘洁 何煜然 周永杰 邝红艳 杨大勇 LIU Jie;HE Yuran;ZHOU Yongjie;KUANG Hongyan;YANG Dayong(Guangdong Academy of Social Sciences,Guangzhou 510635,China;South China Institute of Environmental Sciences,MEE,Guangzhou 510535,China)

机构地区：[1]广东省社会科学院,广州510635 [2]生态环境部华南环境科学研究所,广州510535

出　　处：《生态科学》2022年第3期187-195,共9页Ecological Science

基　　金：广东省水利科技创新项目(2016-01);生态环境部华南环境科学研究所中央级公益性科研院所基本科研业务专项资助项目(PM-zx703-202002-020);广东省社科基金资助项目(GD20CGL33)。

摘　　要：基于秋香江2000、2005、2010和2015年四个时期的遥感影像及气象、水文数据,利用生态弹性力模型,对其流域及200米、500米岸边带的景观格局和生态弹性力进行分析比较,揭示水电梯级开发对其陆域生态弹性力的影响。结果表明:2000—2015年期间秋香江流域的生态弹性力呈现逐渐下降趋势,尤其在2010—2015年间更为明显,说明其生态系统的自我调节能力不断弱化;岸边带的生态弹性力呈现先下降后上升再下降的趋势,表明研究期间岸边带生态系统的自我调节能力有所提高;同期相比,秋香江200米岸边带的生态弹性力最高,其次是500米岸边带,最低的则是整个流域。2000—2015年秋香江流域及岸边带的生态弹性力有所波动,但总体变化不大,水电梯级开发建设未对研究区的陆域生态产生明显影响。Based on satellite image, meteorological data and hydrological data of the Qiuxiangjiang River in 2000, 2005, 2010 and 2015, this paper analyzes and compares the landscape pattern and ecological resilience of the river basin, and its 200 m riparian zone and 500 m riparian zone in the Qiuxiangjiang River by using the model of ecological resilience, and reveals the impacts of small cascaded hydropower plants on terrestrial ecological resilience. The result showed that the ecological resilience of the Qiuxiangjiang River basin decreased continuously from 2000 to 2015, especially for the year of 2010-2015, which illustrated the self-regulation ability of ecosystem had weakened all over the time. Meanwhile, the ecological resilience of its riparian zone decreased from 2000 to 2005, but improved from 2005 to 2010, and then declined from 2010 to 2015 lastly, which indicating the self-regulation ability of ecosystem had strengthened. Compared with the same period, the ecological resilience of 200 m riparian zone was the maximum,followed by 500 m riparian zone, while the ecological resilience of the Qiuxiangjiang River basin was the minimum. Overall, there was little change of the ecological resilience occurred in the Qiuxiangjiang River basin and its riparian zones during the years from 2000 to 2015. Moreover, it is not obviously negative impact on terrestrial ecosystem caused by the construction of impacts of small cascaded hydropower plants.

关 键 词：水电梯级开发 生态弹性力 秋香江 

分 类 号：X171.1[环境科学与工程—环境科学]