中国农业大学水利与土木工程学院,北京,100083
[ "徐晓宇(1999-),女,在读硕士研究生,主要从事生态环境变化与环境系统规划模型研究。E-mail:serenal999@163.com" ]
纸质出版:2020
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徐晓宇, 郭萍, 张帆, 等. 政策驱动下石羊河流域生态效应变化分析[J]. 水土保持学报, 2020,34(6):185-191.
XU Xiaoyu, GUO Ping, ZHANG Fan, et al. Analysis for Changing Ecological Effects Under Policy-Driven in Shiyang River Basin[J]. 2020, 34(6): 185-191.
徐晓宇, 郭萍, 张帆, 等. 政策驱动下石羊河流域生态效应变化分析[J]. 水土保持学报, 2020,34(6):185-191. DOI: 10.13870/j.cnki.stbcxb.2020.06.027.
XU Xiaoyu, GUO Ping, ZHANG Fan, et al. Analysis for Changing Ecological Effects Under Policy-Driven in Shiyang River Basin[J]. 2020, 34(6): 185-191. DOI: 10.13870/j.cnki.stbcxb.2020.06.027.
生态政策对于区域的生态健康与可持续发展具有深刻的影响。以石羊河流域为研究对象,借助遥感信息从地表植被动态变化、土地利用、生态系统服务价值3个角度对《石羊河重点治理规划》实施的生态效应进行分析。遥感数据选用了2000—2018年MODIS-NDVI数据及中国多时期土地利用/土地覆被遥感监测数据集(CNLUCC)。通过分析政策实施前后植被覆盖变化趋势、土地利用类型转换、生态系统服务价值变化等信息,获得了政策驱动下石羊河流域生态效应变化趋势。结果表明:2000—2018年间,石羊河流域植被覆盖情况明显改善。2007年《石羊河流域重点治理规划》实施后,流域NDVI明显增加,区域比例从27.41%增加到41.44%,严重退化区域从37.86%下降为12.14%;流域内水域、耕地和城乡工矿居民用地明显增加,林地、草地面积略有下降;19年间流域生态系统服务价值从232.82亿元增加到236.89亿元,其中2015—2018年间的增长趋势最为显著。研究成果对于衡量生态保护政策对石羊河流域生态系统恢复的促进作用提供了参考依据。
Regional ecological policy has a profound impact on regional ecological health and sustainable development. This study took the Shiyang River basin as the study area
and attempted to analyze the ecological effects of the Shiyang River Key Management Plan (SRKMP) implementation from three perspectives of surface vegetation dynamic change
land use
and ecosystem service value. Based on the remote sensing data
the MODIS-NDVI data from 2000 to 2018 and China’s Multi-period Land Use Land Cover Remote Sensing Monitoring Dataset (CNLUCC) were selected. By analyzing vegetation coverage trends
land use type conversion
and ecosystem service value changes before and after policy implementation
the policy-driven impacts on the ecological effects of the Shiyang River basin were obtained. The results showed that the vegetation coverage in Shiyang River basin had been improved significantly from 2000 to 2018. After implementing the SRKMP in 2007
the proportion of area where NDVI increased had risen from 27.41% to 41.44%
and the severely degraded area decreased from 37.86% to 12.14%. Water
cultivated land and construction land were increased significantly
while the area of forest and grassland decreased slightly. The ecosystem services value in the basin increased from 23.282 billion yuan to 23.689 billion yuan in the past 19 years
with the most significant growth trend from 2015 to 2018. These research results provide a reference for measuring the promoting effect of ecological protection policy on ecosystem restoration in Shiyang River basin.
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