基于目标的三江源生态保护和建设一期工程生态成效评估及政策建议

发布时间：2018-05-02 20:04

本文选题：三江源生态保护和建设一期工程 + 生态成效评估　；参考：《中国科学院院刊》2017年01期

【摘要】：三江源区地处青藏高原腹地,是长江、黄河、澜沧江的发源地,被誉为"中华水塔"。近几十年,由于受到气候变化与人类活动的共同影响,三江源区生态系统持续退化,严重威胁着三大江河中下游地区的生态安全与可持续发展。为了遏制生态系统的持续恶化,我国于2005年开始实施三江源区生态保护和建设一期工程。文章针对三江源生态保护和建设一期工程规划目标,开展了三江源区生态系统状况与变化趋势及其驱动机制的监测评估,以及生态工程生态成效的综合评估。结果表明:通过三江源生态保护和建设一期工程的实施,区域生态系统总体表现出"初步遏制,局部好转"的态势,取得了显著生态成效,预期目标基本实现。然而,区域生态系统的健康状况远未达到理想的状态,必须扩大范围,长期坚持,方能实现"整体恢复,全面好转,生态健康,功能稳定"的最终目标。
[Abstract]:Located in the hinterland of Qinghai-Tibet Plateau, Sanjiangyuan is the birthplace of Yangtze River, Yellow River and Lancang River. In recent decades, due to the influence of climate change and human activities, the ecosystem of the source region of the three rivers has been continuously degraded, which seriously threatens the ecological security and sustainable development of the middle and lower reaches of the three major rivers. In order to curb the continuous deterioration of ecosystem, the first phase of ecological protection and construction project in Sanjiangyuan region was carried out in China in 2005. Aiming at the goal of the first stage project planning of ecological protection and construction in Sanjiangyuan, the paper carried out the monitoring and evaluation of ecosystem status, trend of change and driving mechanism in Sanjiangyuan area, as well as the comprehensive evaluation of ecological effect of ecological engineering. The results show that through the implementation of the first phase of ecological protection and construction of the three Rivers, the regional ecosystem shows a trend of "preliminary containment and partial improvement", with remarkable ecological achievements and the basic realization of the expected goal. However, the health status of the regional ecosystem is far from the ideal state, and it is necessary to expand the scope and persist for a long time in order to achieve the ultimate goal of "overall recovery, overall improvement, ecological health and functional stability".
【作者单位】：中国科学院地理科学与资源研究所;
【基金】：国家自然科学基金项目(41571504) 国家“十二五”科技支撑计划项目(2013BAC03B00)
【分类号】：X171;X321

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