曲靖市主要水源地水域面积时空变化及其响应机制研究摘 要 通过量化分析，揭示曲靖的湖泊或水库资源的分布状况及变化特征，找出曲靖的湖泊或水库变化的根本原因，为曲靖水资源的保护及利用提供理论依据。选取了 1988、1996、2003、2009、2017 共五年 TM/OLI 遥感影像，选取了 NDWI法和 MNDWI 法，对曲靖市主要水源地水域面积信息进行了提取。1988～2017 年间，主要水源地水域面积呈现出波动上升的趋势，主要水源地水域面积年变化趋势表现为“上升-下降-上升-下降”的“M”型波动增加。年降水量的变化、地下水的补给、气温、除险加固工程、生态投资的增加等综合影响了曲靖市主要水源地水域面积的变化。关键词：水体提取；曲靖市；时空变化Temporal and Spatial Changes of Water Area and Its Response Mechanism of Main Water Source Areas in Qujing CityAbstractThrough quantitative analysis, this paper reveals the distribution and change Icharacteristics of the lake or reservoir resources in Qujing, and finds out the fundamental reasons for the change of the lake or reservoir in Qujing, which provides theoretical basis for the protection and utilization of the water resources in Qujing. TM/OLI remote sensing images of 1988, 1996, 2003, 2009 and 2017 were selected. NDWI and MNDWI methods were selected to extract water area information of main water sources in Qujing City. From 1988 to 2017, the water area of the main water sources showed an upward trend of fluctuation, and the annual variation trend of the water area of the main water sources showed an increase of "M" type fluctuation of "rising-falling-rising-falling". The changes of annual precipitation, groundwater recharge, air temperature, reinforcement projects, and the increase of ecological investment have a comprehensive impact on the changes of water area of the main water sources in Qujing City.Key words: water body extraction；Qujing City；spatialII目录1 引言.....................
