基于植被指数的开都河第一分水枢纽工程生态效应分析

发布时间：2018-12-10 07:05

【摘要】：水利工程建设在生态环境较恶劣,水资源严重短缺的干旱区其表现更为突出。科学的分析水利工程的生态效应可为区域水利工程与生态环境协调发展提供重要的理论依据。本文以Landsat遥感影像和水文数据为主要数据源,分析开都河流域第一分水枢纽工程建成前后的土地利用/土地覆被、径流量与生物量变化趋势,进一步讨论水利工程建设对开都河流域植被覆盖变化的影响。结果显示:1)第一分水枢纽工程建成以后,研究区土地利用动态度增加,其中耕地面积直线增加;2)通过对水利工程建设前后的水资源利用效率与流域生态环境质量进行对比分析,得知水利工程可以调节开都河水量在时间和空间上的分配,适应人类对水资源利用的要求;3)水利工程运行后,研究区植被覆盖度与生物量逐渐增加,裸地面积逐渐减少,说明水利工程的建设对生态环境有修复作用。
[Abstract]:The construction of water conservancy projects is more prominent in arid areas where the ecological environment is worse and water resources are seriously short. Scientific analysis of ecological effects of water conservancy projects can provide an important theoretical basis for the coordinated development of regional water conservancy projects and ecological environment. Taking Landsat remote sensing images and hydrological data as the main data sources, this paper analyzes the trends of land use / land cover, runoff and biomass before and after the completion of the first watershed project in Kaidu River Basin. The effect of water conservancy construction on vegetation cover change in Kaidu River Basin is discussed. The results show that: 1) after the completion of the first watershed project, the land use dynamic degree in the study area increases, and the cultivated land area increases linearly; 2) through the comparative analysis of water resource utilization efficiency and watershed ecological environment quality before and after the construction of water conservancy project, it is concluded that water conservancy project can adjust the allocation of water quantity in time and space, and adapt to the demand of human being for water resources utilization; 3) after the operation of water conservancy project, the vegetation coverage and biomass increase gradually, and the bare land area decreases gradually, which indicates that the construction of water conservancy project can repair the ecological environment.
【作者单位】：新疆师范大学地理科学与旅游学院流域信息集成与生态安全实验室;新疆师范大学新疆干旱区湖泊环境与资源实验室;
【基金】：新疆维吾尔自治区青年科技创新人才培养工程“变化环境下典型绿洲系统的时空演变过程及其驱动机制研究”(QN2015YX009) 国家自然科学基金“内陆湖泊流域水循环过程模拟与调控研究”(41461006),“新疆焉耆盆地二元水循环时空动力学机制与模拟研究”(41161007)
【分类号】：X82;TV61

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