Dynamic Analysis in Surface Water Area and Its Driving Factors in Northeast China from 1988 to 2020

The spatiotemporal changes in surface water area (SWA) the basins of Northeast China have far-reaching impacts on their economic, agricultural, and social development ecological sustainability. However, long-term variation characteristics bodies basin its main driving factors are still unclear. Based global dataset, combined with Meteorological Vegetation Normalized Index (NDVI) datasets, this study used linear regression correlation analysis to investigate temporal spatial from 1988 2020. results show that (1) seasonal (SSWA) permanent (PSWA) increased at rates 58.408 km2/ year 169.897 year, respectively, Taking 2000 as node, PSWA SSWA showed a trend first decreasing then increasing. (2) Changes types each significant space–time differences, transition between is dominated by addition reduction bodies. decreased significantly western such Ulagai River Basin, Otindag Desert, Liao but Songhua Basin. (3) forces change different different. Temperature NDVI play leading role SWA arid region; permafrost degradation under condition air temperature rise an indispensable factor affecting Argun Basin; eastern larger responded more strongly precipitation evapotranspiration. Land-use conversion conservancy project construction were reasons for increase Basin reduced precipitation. This research provides reference in-depth resources has important practical significance scientific management basin.