| 典型年洞庭湖系统健康综合评价 |
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| 引用本文： | 帅红,李景保.典型年洞庭湖系统健康综合评价[J].地理科学,2014,34(2):170-177. |
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| 作者姓名： | 帅红 李景保 |
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| 作者单位： | 湖南师范大学资源与环境科学学院,湖南 长沙 410081 |
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| 基金项目： | 国家自然科学基金(41071067);湖南省重点学科地理学建设项目;湖南省教育厅科学研究青年项目(13B074);湖南省自然科学基金(11JJ6027)资助 |
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| 摘 要： | 以洞庭湖各典型年的遥感影像、相关图件、社会经济数据及水沙、水质监测等实测资料为依据,基于湖泊健康 “PSR”响应模型,构建了综合评价指标体系,确定了具体的评价指标、评价标准、指标权重和评价等级,采用主成分分析法评价洞庭湖系统健康状况的空间差异,以模糊综合评判法评价其典型年动态变化特征。结果表明：① 从各典型年来看,1986年和1998年洞庭湖处于不健康状态,1991年为临界健康;而三峡工程蓄水运行之后洞庭湖均处于临界健康状态。② 从空间分布上看,南洞庭湖系统健康状况相对较好,其次是东洞庭湖,最差的是西洞庭湖。③ 从压力-状态-响应健康指数来看,各典型年压力隶属度均为不健康,尤其是三峡工程蓄水运行后;其状态、响应隶属度一直保持在临界健康水平。这说明洞庭湖虽保持了较为完整的自然形态、结构基本合理、生态服务价值稳定,但已出现“病症”。作为国家级自然保护区,洞庭湖健康整体水平仍需进一步提升。
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| 关 键 词： | 洞庭湖系统 健康 主成分分析法 模糊综合评判法 |
| 收稿时间： | 2013-01-24 |
| 修稿时间： | 2013-05-09 |
Assessment and Analysis of Comprehensive Health in Typical Years of Dongting Lake System |
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| Hong SHUAI,Jing-bao LI.Assessment and Analysis of Comprehensive Health in Typical Years of Dongting Lake System[J].Scientia Geographica Sinica,2014,34(2):170-177. |
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| Authors: | Hong SHUAI Jing-bao LI |
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| Institution: | College of Resources and Environmental Science, Hunan Normal University, Changsha, Hunan 410081, China |
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| Abstract: | According to remote sensing images, relevant maps, social and economic data, water and sediment data, water quality monitoring data in typical years of the Dongting Lake, Based on ‘Pressure-State-Response’ mode, a health assessment indicator system of Dongting Lake was constructed, and the assessment indices, assessment criteria, indices weighted values and assessment grades were established. The principal component analysis was used to evaluate the spatial variation characteristics of ecosystem health in Dongting Lake. Fuzzy comprehensive evaluation was adopted to apprise the time serial change law of ecosystem health in Dongting Lake. The results showed that: 1) The typical years can be described as unhealthy except for the 1991 before impoundment and operation of TGP. However, the typical years after impoundment and operation of TGP can be described critically healthy. It demonstrated that TGP was benefit for the health of the Dongting Lake. The comprehensive health index of Dongting Lake is showing a slow upward trend. However, no one typical year of it is healthy,so the health status of Dongting Lakeis not optimistic.2) The South Dongting Lake has a relatively good health status, and then followed by the West Dongting Lake, the East Dongting Lake was the worst one. This is decided by the lake area, the benthic animal diversity, fishing capacity, ecological service function, the management level and the surrounding masses consciousness and other factors.3) From the health indexes of PSR, grade of pressure membership of Dongting Lake were not healthy, especially after impoundment and operation of TGP, its grades of state and response membership were keeping critically healthy state. It indicated that morphology was complete, structure was reasonable and ecological service value was stable, but it had signs of the disease. As a national nature reserve, this ecosystem was to be further improved in its health level. |
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| Keywords: | Dongting Lake system comprehensive health principal component analysis fuzzy comprehensive evaluation |
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