基于Sentinel-1及Landsat-8产品在渭河流域的土壤水分反演研究

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中图分类号：X53

文章编号：1674-6139（2025）12-0116-06

文献标志码：B

Abstract：This study combines Sentinel -1 and Landsat -8 data to invert soil moisture in the Wei River Basin.Normalized Difference MoistureIndex（NDW）wasusedtostimatethevegeaionmoisturecontent（VWC）inthesudyarea，andawatercloudmodelwasusedfor soilmoistureinveiontoanalyzetheinversionrsultsTemainrsearchesultsareasflowsTheuseofwatercloudmodelsforsoilois tureinversioninthupperreachesoftheWeiRiveriseasibleandtheefectmeetsexpectatios.Therelativehumidityofthesoilintee searchareaisatamoderateleveltroughouthefourseasonsinspring，whichistemostbalancedtate.Itisdriestinsummeandwetest inwinter.Theoveralltrendisominatedbyilddroughtareas，withminorhangesinseveredroughtareas.Soloisturechangsinly occur innondroughtandmoderatedroughtareas，showingadecreasing increasing trend throughoutthe four seasons.

Keywords：backscattering coefcient；soil moisture；water-cloud model

前言

土壤水分是研究及预测气候变化的重要参数，同时也在土壤和大气中的能量转换扮演着重要角色。（剩余6178字）