塔里木河流域生态系统健康评价

通过收集2000 年以来塔里木河流域的生态、经济和社会状况资料,分析影响该流域生态系统健康的因素,采用指标体系分析法和专家咨询法,确立塔里木河流域生态系统健康评价指标体系和评价标准,计算得出流域生态健康评价指标权重,并对流域生态健康状况进行了评价.结果表明:塔里木河源流的阿克苏河、叶尔羌河和开都河-孔雀河流域的山区生态系统的健康状态处于"中等"级别,和田河流域的山区生态处于"优"级别;阿克苏河、叶尔羌河和和田河流域的平原绿洲区生态处于"优"级别,开都河-孔雀河流域的平原绿洲区生态处于"中等"级别;四源流的荒漠区生态处于"差"级别;塔里木河干流上游生态处于"优"级别,中游生态处于"中等"级别,下游生态处于"差"级别.评价结果基本与实际相符,说明使用的评价方法是切实可行的.该研究结论将为流域生态环境的综合治理提供科学依据.

Assessment on ecosystem health in the Tarim River Basin

Based on information on ecology and socio-economics over the Tarim River Basin from 2000, we analyzed factors influencing ecosystem health, using index system method and expert score sheet, developed index weighting scheme of ecosystem health assessment, and evaluated ecosystem health in this basin. We found that the ecosystems in the mountainous areas of Aksu, Yarkant and kaidu-Konqi River Basin were sub-healthy, those in the Hetian River Basin was healthy; ecosystems in plain-oasis areas of Aksu, Yarkant and Hetian River Basin were healthy, those of Kaidu-Konqi River Basin were sub-healthy; the desert ecosystems of four headstreams were unhealthy; the ecosystems of the upper reaches of Tarim River were healthy, those of the middle reaches were sub-healthy, and those of the lower reaches were unhealthy. Evaluation results are consistent with the actual situation, indicating that our method is suitable for ecosystem health assessment in the Tarim River Basin. The resulting data provide scientific basis for integrative ecosystem management of the Tarim River Basin.