基于GF_1 卫星16 m分辨率多光谱遥感数据及水文观测数据，通过计算NDWI水体指数来提取丹江口水库水面面积，并研究水面面积、水位与蓄水量三者之间的相关性，实现动态分析水库蓄水量变化情况，以期为“南水北调”提供决策支撑。研究发现：①南水北调中线首个调度年前后丹江口水库水面面积-水位，水位-蓄水量以及水面面积-蓄水量之间均为显著相关关系，且三对变量依次呈现明显的1次、2次、3次曲线关系，拟合曲线方程的决定系数分别达到0.976、0.999和0.980，因此可以根据其中一个已知变量预测其他两个未知量；②水面面积自2014年10月5日至2016年5月5日最大变化幅度相差180 km2，是影响周边环境变化的重要因素；③同时蓄水量在首个调度年内，于2014年11月初达到最大值204.10亿m3，可调水量在16.53-78.93亿m3范围内浮动，且年内整体变化平缓稳定，保证了2015调度年内南水北调中线工程的供水需求。

Based on GF-116m resolution multispectral remote sensing satellite and hydrological observation data by calculating Normalized Difference Water Index (NDWI) to extract the surface area of the Danjiangkou Reservoir, and to study the correlations of surface area, water level and volume of water between the three, dynamic analysis reservoir storage capacity changes, in order to provide decision support for the "South-to-North diversion project". The result shows: ①water transfer before and after the first dispatch of Danjiangkou Reservoir water area - water depth, water depth - storage capacity and surface area-storage capacity. there is significant correlation, and three pairs of variables present strong linear, conic, cubic curve relationship in turn, the decisive coefficients of Curve-fitting equations were 0.976, 0.999, 0.980 respectively. It may predict two other unknown variables from one known; ② the maximum range of water area from October 5, 2014 to May 5, 2016 was 180km2, which is an important factor that affects the surrounding environment; ③ Finally, storage capacity at the same time in the first year scheduling, in early November 2014, reached the maximum 20.41 billion m3, adjustable water in 1.653 within the range of floating 7.893 billion m3, and the total change in the year was flat and stable to ensure that the water demand during the 2015 scheduling of the North Water Transfer Project.

农业科学领域数据资料整编与加工（2013FY110900-6）