文献类型：期刊文献

中文题名：基于RWEQ模型的内蒙古巴彦淖尔市土壤风蚀变化特征及归因分析

英文题名：Change of soil wind erosion and attribution in Bayannur,Inner Mongolia based on the Revised Wind Erosion Equation

作者：邢丽珠[1,2] 张方敏[1] 邢开成[3] 李云鹏[4] 卢琦[5] 鲁飞飞[6]

第一作者：邢丽珠

机构：[1]南京信息工程大学应用气象学院,气象灾害预报预警与评估协同创新中心/江苏省农业气象重点实验室,江苏南京210044;[2]枣庄市气象局,山东枣庄277800;[3]河北省气候中心,河北石家庄050011;[4]内蒙古自治区生态与农业气象中心,内蒙古呼和浩特010051;[5]中国林业科学研究院,荒漠化研究所/沙漠林业实验中心,北京100091;[6]内蒙古自治区巴彦淖尔市林业勘测设计队,内蒙古巴彦淖尔015000

年份：2021

卷号：41

期号：5

起止页码：111-119

中文期刊名：中国沙漠

外文期刊名：Journal of Desert Research

收录：CSTPCD;;北大核心:【北大核心2020】；CSCD:【CSCD2021_2022】；

基金：科技部重大研发计划项目(2018YFC1506606);江苏省优秀青年基金项目(BK20170102)。

语种：中文

中文关键词：RWEQ模型;土壤风蚀;时空变化;影响因素;通径分析

外文关键词：RWEQ;soil wind erosion;temporal and spatial variation;influencing factors;path analysis

分类号：S157.1;X171.1

摘要：土壤风蚀是干旱半干旱地区面临的主要生态环境问题。基于修正风蚀方程模型(RWEQ)与GIS技术,分析了1980—2018年内蒙古巴彦淖尔市土壤风蚀变化并分析成因。结果表明:(1)研究期间,巴彦淖尔市土壤风蚀模数总体呈下降趋势,多年均值为40.26 t·hm^(-2),10年倾向率为-8.02 t·hm^(-2)。2000年前以中度风蚀为主,2000年以后以微度风蚀为主。(2)空间上,巴彦淖尔市土壤风蚀高值区主要分布在西北部地区,低值区主要分布在南部地区。不同风蚀强度面积占比排序为中度>轻度>强烈>微度>极强烈>剧烈,微度和轻度风蚀面积呈现增大趋势,中度、强烈、极强烈和剧烈风蚀面积均呈现减小趋势。总体上,全区土壤风蚀均呈现下降趋势,西北部下降幅度最大,南部下降幅度最小。(3)内蒙古巴彦淖尔市土壤风蚀主要受风速(u)、温度(Ta)、植被覆盖度(VC)和土壤含水量(sw)影响,u的直接作用最明显,而Ta、VC和sw主要产生间接影响。总体来说,u对巴彦淖尔市土壤风蚀变化的综合决定能力最强,sw的综合决定能力最弱。
Soil wind erosion is a major ecological environmental problem in arid and semi-arid regions.The change of soil wind erosion and the causes were analyzed based on the revised wind erosion equation(RWEQ)and GIS technology in Bayannur of Inner Mongolia from 1980 to 2018.The results showed that:(1)during the study period,the annual soil wind erosion modulus generally showed a downward trend in Bayannur,Inner Mongolia,with the annual mean is 40.26 t·hm^(-2),and the tendency rate was-8.02 t·hm^(-2)every10 years.moderate wind erosion was dominant before 2000,and then mired wind erosion occurred in Bayannur.(2)In space,the high value area of soil wind erosion is mainly distributed in the northwest,and the low value area is mainly distributed in the south in Bayannur.The area proportion of each wind erosion intensity was moderate>mild>strong>mired>very strong>fierce,and mired and mild wind erosion area showed an increasing trend,while moderate,strong,very strong and fierce wind erosion area showed a decreasing trend.In general,soil wind erosion showed a downward trend,with the greatest decline in the northwest and the smallest in the south.(3)Soil wind erosion is mainly affected by vegetation coverage(VC),wind speed(u),temperature(Ta)and soil water content(sw)in Bayannur of Inner Mongolia.The direct effect of VC is the most obvious,while u,Taand sw mainly have indirect effects.On the whole,VC has the strongest comprehensive determination ability on soil wind erosion change,while Ta has the weakest ability in Bayannur of Inner Mongolia.