[1]田湘云,张超,陈棋,等. 滇东南石漠化地区地形起伏度对水土流失的影响[J].西北林学院学报,2022,37(3):162-170.[doi:10.3969/j.issn.1001-7461.2022.03.23]
　TIAN Xiang-yun,ZHANG Chao,CHEN Qi,et al. Relief Degree of Land Surface and Its Influence on the Soil Erosion in Rocky Desertification Area of Southeast Yunnan[J].JOURNAL OF NORTHWEST FORESTRY UNIVERSITY,2022,37(3):162-170.[doi:10.3969/j.issn.1001-7461.2022.03.23]
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 滇东南石漠化地区地形起伏度对水土流失的影响()
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《西北林学院学报》[ISSN:1001-7461/CN:61-1202/S]

卷:
第37卷
期数:
2022年第3期
页码:
162-170
栏目:
出版日期:
2022-05-31

文章信息/Info

Title:
 Relief Degree of Land Surface and Its Influence on the Soil Erosion in Rocky Desertification Area of Southeast Yunnan
文章编号:
1001-7461(2022)03-0162-09
作者:
 田湘云; 张超; 陈棋; 史小蓉; 王妍*
 （西南林业大学，云南 昆明 650224）
Author(s):
 TIAN Xiang-yun; ZHANG Chao; CHEN Qi; SHI Xiao-rong; WANG Yan*
 (Southwest Forestry University,Kunming 650224,Yunnan,China)
关键词:
 ; 地形起伏度; 水土流失; 最佳分析窗口; 均值变点法; 石漠化
Keywords:
 ; relief degree of land surface;  soil and water loss;  optimal analysis window;  mean change-point analysis;  rocky desertification
分类号:
S718.55
DOI:
10.3969/j.issn.1001-7461.2022.03.23
文献标志码:
A
摘要:
 分析石漠化地区的水土流失地理分布格局，探究地形起伏度对其分布规律的影响，为滇东南石漠化地区水土流失的防治措施提供合理且全面的依据。以滇东南石漠化地区马关县、西畴县和麻栗坡县为研究区，基于30 m空间分辨率的DEM数据计算地形起伏度，利用10 m空间分辨率的Sentinel-2数据提取土地利用类型。研究表明，根据均值变点法确定研究区地形起伏度最佳像元分析窗口为24×24，地形起伏度在0~2.41；水土流失强度主要为极强烈等级，占研究区总面积的26.85%；水土流失强度区域多集中在0.05~0.35等级范围内，地形起伏度在0.15~0.25等级范围达到水土流失强度峰值。研究区的地形起伏度与水土流失强度等级分布具有高度相关性，充分说明地形起伏度是石漠化地区水土流失的主导因素之一。
Abstract:
 The geographical distribution pattern of the soil and water loss in rocky desertification area was analyzed,and the effect of relief degree of land surface (RDLS) on its distribution law was studied.Taking the rocky desertification areas of three counties (Maguan,Xichou,and Malipo) in southeast Yunnan as the study areas,the RDLS was calculated based on digital elevation model (DEM) data with 30 m spatial resolution,and the land use types were extracted from Sentinel-2 data with 10 m spatial resolution.The best pixel analysis window of the RDLS was 24×24,and the values of RDLS were between 0 and 2.41,the intensity of soil erosion was mainly in extremely eroded level,which accounted for 26.85% of the total study area.The intensity of soil and water loss mainly concentrated in the range of 0.05-0.35 grade,and the RDLS reached the peak value of soil and water loss in the range of 0.15-0.25 grade.There existed a high correlation between the RDLS and the distribution of soil and water loss intensity,indicating that the RDLS is one of the leading factors of soil and water loss in the rocky desertification area.

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备注/Memo

备注/Memo:
 收稿日期：2021-08-23修回日期：2021-10-25
基金项目：云南省“万人计划”人才培养项目（YNWR-QNBJ-2018-334）；国家自然科学基金（31660236）。
第一作者：田湘云。研究方向：石漠生态系统。E-mail：1439062283@qq.com
*通信作者：王妍，博士，副教授。研究方向：水土保持与荒漠化防治。E-mail：wycaf@126.com
更新日期/Last Update: