水土保持通报2018，Vol.38Issue(2)：271-274,280,5.DOI:10.13961/j.cnki.stbctb.2018.02.044
RWEQ模型中土壤结皮和可蚀性因子的改进和应用
Improvement and Application of Soil Crust and Erodibility Factors in RWEQ Model
摘要
Abstract
[Objective] In order to solve the problems about transferring the existing data of soil texture between different standards,the soil census data based on Chinese soil particle size classification standard were applied to revise the wind erosion equstion model(RWEQ).[Methods] This thesis tried to use the lognormal distributed model to convert the soil particle size and discussed the applicability and feasibility of lognormal distributed model in describing the character of soil particle distribution in Inner Mongolia Autonomous Region,Jilin Province,and Shaanxi Province,etc.[Results] The research result showed that lognormal distributed model can well simulate the content of soil particles.The regions with high soil crust factor and soil erodible fraction are those windy desert region in Northern China,followed by the regions with frigid calcic soils.[Conclusion] Soil crust factor can either decrease or increase erodible fraction in different cases.Determining rainfall amount that soil surface can crust and subsequently minimize the soil wind erodibility in different climate conditions should be the key to the future.关键词
土壤粒径/RWEQ模型/土壤结皮/土壤可蚀性Key words
soil structure/revised wind erosion equstion model(RWEQ)/soil crust factor/soil erodible fraction分类
资源环境引用本文复制引用
巩国丽,黄麟..RWEQ模型中土壤结皮和可蚀性因子的改进和应用[J].水土保持通报,2018,38(2):271-274,280,5.基金项目
国家“十二五”科技支撑计划课题“国家尺度生态系统监测与评估技术集成应用系统”(2013BAC03B00) （2013BAC03B00）
