国家自然科学基金No.41101378;国家高分辨率对地观测重大专项No.05-Y30B02-9001-13/15;“十二五”国家水体污染控制与治理科技重大专项No.2014ZX07508-1Supported by the National Natural Science Foundation of ChinaNo.41101378,the National Key Project of High-resolution to Earth Observation SystemNo.05-Y30B02-9001-13/15 and the National Major Science and Technology Program for Water Pollution Contorl and TreatmentNo.2014ZX07508-1