HAO Shi-long,XU Jian-zhao,TIAN Ying-chao.Land Use/Cover Change and Ecological Response to Eco-Environment in Loess Hilly Area[J].Research of Soil and Water Conservation,2014,21(05):24-27,34.
黄土丘陵区土地利用/覆被变化与生态环境响应
- Title:
- Land Use/Cover Change and Ecological Response to Eco-Environment in Loess Hilly Area
- Keywords:
- land use/cover change; environmental impact assessment; ecosystem service function; green equivalent; Shanghuang experimental area
- 分类号:
- X144
- 摘要:
- 以生态绿当量作为土地利用变化环境影响评价的度量指标，引用生态绿当量数学模型，以固原市上黄试区为例，利用1982年、2000年及2010年土地利用现状数据，测算上黄试区不同时期各种用地类型的绿当量和总绿当量，用以衡量生态环境状况。结果表明：1982年，上黄试区生态绿当量为0.88，说明该时段生态服务功能差，没有达到应有的生态标准；1982—2000年，这时期为治理期，经过近20 a的生态综合治理，到2000年该试区生态绿当量达到1.266，说明该试区生态环境达标，生态服务功能良好；2000—2010年，在国家退耕还林还草政策条件下，坡耕地进行了深度地退耕，至2010年，该试区生态绿当量达到1.479，说明生态服务功能进一步加强。生态绿当量作为评价区域生态环境指标具有涵义明确、计算方便等优点。
- Abstract:
- This paper took Shanghuang experimental area as an example, and took the ecological green equivalent as the measure index of the environmental impact assessment, to establish the ecology green equivalent mathematical model and surveyed the value of region green equivalent, then assessed the ecology environment situation based on the data of land use in 1982, 2000 and 2010. The result showed that the green equivalent was 0.88 in 1982, which meant that the ecosystem service function was not up to the standard; while in 2000, after about 20 years comprehensive ecological management in this area, the green equivalent reached up to 1.266, which indicated that the ecological environment had been improved in Shanghuang experimental area; after returning the farmland to forestland and grassland from 2000 to 2010, the green equivalent was 1.479 in 2010, which showed that the ecological service functions became more powerful. It is clear meaning and simple calculation to use the ecological green equivalent as the indicators of the regional evaluation of ecological environment.
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备注/Memo
收稿日期:2013-12-10;改回日期:2014-01-02。
基金项目:水利部黄土高原水土流失过程与控制重点实验室开放课题基金“宁南山区土地利用/覆盖变化研究”（201305）
作者简介:郝仕龙(1972-),男,江西永修人,博士,副教授,主要研究方向:土地利用/土地覆盖变化。E-mail:haoshilong@ncwu.edu.cn