| 巢湖流域的土地利用变化及其生态系统功能损益 |
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| 引用本文： | 李云生,周广金,梁 涛,吴连喜,刘伟江.巢湖流域的土地利用变化及其生态系统功能损益[J].地理研究,2009,28(6):1656-1664. |
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| 作者姓名： | 李云生 周广金 梁 涛 吴连喜 刘伟江 |
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| 作者单位： | |
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| 基金项目： | 环境保护部全国重点湖泊生态安全评估项目 |
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| 摘 要： | 基于多时点TM影像解译数据,研究了巢湖流域近30年以来的土地利用/覆盖变化,并借助于生态系统服务价值理论,估算了研究区土地利用/覆盖类型变化所造成的生态系统服务价值损益。由于巢湖流域主要以水田为主,生态服务价值较高,同时考虑该区域水田一年两季的耕作特点,单位面积耕地生态系统服务价值是全国平均值的两倍,单位面积林草地的生态系统服务价值是全国平均价值的1.45倍。研究结果表明:巢湖流域近30年生态服务功能价值损失了831.68×106元,年均损失27.7×106元,并呈现逐年加剧趋势;流域生态服务价值损失量空间分布极不平衡,合肥每年生态服务价值损失量超过流域均值5倍,由此表明大城市扩张对巢湖流域生态服务价值损益作用明显。
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| 关 键 词： | 巢湖流域 土地利用/覆盖变化 生态服务价值 1979~2008 |
| 收稿时间： | 2009-03-03 |
| 修稿时间： | 2009-08-03 |
Study of land use change on the gains and losses of ecosystem service function values of Chaohu Lake Basin |
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| LI Yun-sheng,ZHOU Guang-jin,LIANG Tao,WU Lian-xi,LIU Wei-jiang.Study of land use change on the gains and losses of ecosystem service function values of Chaohu Lake Basin[J].Geographical Research,2009,28(6):1656-1664. |
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| Authors: | LI Yun-sheng ZHOU Guang-jin LIANG Tao WU Lian-xi LIU Wei-jiang |
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| Institution: | 1. Chinese Academy For Environmental Planning, Beijing 100012, China;
2. Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing 100101, China;
3. Faculty of Earth Science and Surveying Engineering, East China Institute of Technology, Fuzhou 344000, China |
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| Abstract: | Land use/land cover change (LUCC) has a significant impact on the eco-environ-ment. This article studied LUCC of the Chaohu Lake Basin based on multi-year TM image data, and the theory of ecosystem services values. The economic values of ecosystem serv-ices of the Chaohu Lake Basin in 1979, 1988, 1995, 2000, 2005 and 2008 were estimated, and changes caused by LUCC in the past 30 years were analyzed. According to the spatial distribution of ecosystems and land types of the heterogeneity of the natural and economic characteristics, the ecosystem services values of different regions have great difference. Based on the geographical classification of grassland of Xie Gaodi and others, and com-bined with the local actual status, the article amended the ecosystem service value of unit area. As the Chaohu Lake Basin is mainly composed of paddy fields, the ecological services value is relatively high. Considering that paddy fields are featured by two crops a year in the region, the ecological services value of farmland is twice as much as the value of the national average. The ecosystem services value of grassland and forests is equal to 1.45 times of the national average value. The results showed that the ecosystem services value in the study area has decreased by 831.68 × 10~6 Yuan in the past 30 years, or 27.7 × 10~6 Yuan every year. The changing speed is increasing with the time. In addition, the loss of the ecosystem services value is also very uneven in space, for example, the loss of the eco-system services value of unit area in Hefei is 5 times more than the average in the Chaohu Basin each year. This shows that the expansion of large cities in the Chaohu Lake Basin has a significant influence on the gains and losses of ecosystem service value. |
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| Keywords: | Chaohu Lake Basin land use/cover change values of ecosystem service 1979-2008 |
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