干旱区生态环境知识资源中心(Arid): 基于RWEQ模型的磴口县沙地与耕地风蚀评价及验证

Arid

	基于RWEQ模型的磴口县沙地与耕地风蚀评价及验证
其他题名	Evaluation and verification of wind erosion of sandy land and cultivated land in Dengkou county based on RWEQ model
	张扬; 田美荣; 陈艳梅; 冯朝阳; 吕田田
来源期刊	干旱区资源与环境
ISSN	1003-7578
出版年	2021
卷号	35 期号:9 页码:95-102
中文摘要	为了验证RWEQ模型在中国干旱半干旱地区的风蚀模拟精度,文中选取磴口县沙地和玉米耕地为研究对象,实时监测2019年5 - 8月风速、降水量、气温、植被覆盖度和土壤风蚀量等数据,并对RWEQ土壤风蚀模型中的下风向距离z进行修正,估算试验区沙地与玉米耕地的土壤风蚀量。结果表明:下垫面为沙地时,z为50m,5 - 8月土壤风蚀量Q(50)为755.0g/m~2、483.7g/m~2、169.2g/m~2和146.3g/m~2,土壤风蚀量预测效果最好,模型预测平均精度达到83.86%;当下垫面为玉米耕地时,z为100m,5 - 8月土壤风蚀量Q(100)分别为123.6g/m~2、57.5g/m~2、17.3g/m~2和9.3g/m~2,土壤风蚀量预测效果最好,模型预测平均精度达到73.10%。由于RWEQ模型的预测精度取决于参数,可以经过进一步的参数修订取得更精确的风蚀预报结果,为提高区域尺度上的沙地和耕地风蚀预测精度奠定良好的基础。
英文摘要	In order to verify the simulation accuracy of RWEQ model for wind erosion in arid and semi - arid areas of China,taking the sandy land and corn farmland in Dengkou county as the research objects,our study obtained the data of wind velocity,precipitation,temperature,vegetation coverage and soil wind erosion from May to August in 2019 by real - time monitoring. In addition,the downwind distance z in RWEQ soil wind erosion model was modified to estimate the amount of soil wind erosion in sandy land and corn farmland. Results showed that: when the underlying surface was sandy land and z was 50m,the Q (50) of soil wind erosion from May to August were 755.0g/m~2,483.7g/m~2,169.2g/m~2 and 146.3g/m~2 respectivily,and the prediction effect of soil wind erosion for sandy land was the best,with the average prediction accuracy of 83.86%; when the underlying surface was corn farmland and the z was 100m,the Q (100) of soil wind erosion from May to August were 123.6g/m~2,57.5g/m~2,17.3g/m~2 and 9.3g/m~2 respectivily,and the prediction effect of soil wind erosion for corn farmland was the best,with the average prediction accuracy of 73.10%. Since the prediction accuracy of RWEQ model depended upon the parameters,and more accurate wind erosion prediction results might be obtained only after further parameter revision. A good basis can be built up for improving the accuracy of wind erosion prediction for sandy land and corn farmland on the regional scale.
中文关键词	土壤风蚀 ; RWEQ模型 ; 模型验证 ; 磴口县
英文关键词	soil wind erosion RWEQ model model validation Dengkou county
类型	Article
语种	中文
收录类别	CSCD
WOS类目	Agriculture
CSCD记录号	CSCD:7046595
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/377688
作者单位	张扬, 河北师范大学资源与环境科学学院;;中国环境科学研究院, 河北省环境演变与生态建设重点实验室;;环境基准与风险评估国家重点实验室, 石家庄;;, ;;北京 050024;;100012.; 田美荣, 中国环境科学研究院, 环境基准与风险评估国家重点实验室, 北京 100012, 中国.; 冯朝阳, 中国环境科学研究院, 环境基准与风险评估国家重点实验室, 北京 100012, 中国.; 陈艳梅, 河北师范大学资源与环境科学学院, 河北省环境演变与生态建设重点实验室, 石家庄, 河北 050024, 中国.; 吕田田, 河北师范大学资源与环境科学学院, 河北省环境演变与生态建设重点实验室, 石家庄, 河北 050024, 中国.
推荐引用方式 GB/T 7714	张扬,田美荣,陈艳梅,等. 基于RWEQ模型的磴口县沙地与耕地风蚀评价及验证[J],2021,35(9):95-102.
APA	张扬,田美荣,陈艳梅,冯朝阳,&吕田田.(2021).基于RWEQ模型的磴口县沙地与耕地风蚀评价及验证.干旱区资源与环境,35(9),95-102.
MLA	张扬,et al."基于RWEQ模型的磴口县沙地与耕地风蚀评价及验证".干旱区资源与环境 35.9(2021):95-102.