干旱区生态环境知识资源中心(Arid): 宁夏土地荒漠化敏感度时空变化分析

Arid

	宁夏土地荒漠化敏感度时空变化分析
其他题名	Spatiotemporal changes analysis of land desertification sensitivity in Ningxia, China
	潘玉豪; 陈云皓; 张旭晨; 曹飞; 孙中平; 杜晓铮; 赵祥
来源期刊	北京师范大学学报. 自然科学版
ISSN	0476-0301
出版年	2020
卷号	56 期号:4 页码:582-590
中文摘要	选取土壤、地形、自然环境和社会经济4个方面的数据,采用Logistic回归模型分别对2001和2017年宁夏土地荒漠化敏感度进行了建模分析.基于模型得到2001和2017年宁夏荒漠化敏感度等级数据.主要结论有:1)采用Logistic回归模型可以有效检测宁夏荒漠化敏感度,2001和201 7年的模型准确度分别达到85%和78%;2)宁夏各区域按荒漠化风险等级由低到高排序,依次为北部引黄溉区、南部黄土丘陵区、中部干旱区;3)相比于2 001年,2017年宁夏土地荒漠化风险级别总体呈下降趋势,大约有39%的高风险和极高风险区域转化为低风险和中等风险区域,得益于防沙治沙、禁牧封育与生态修复等政策的施行.研究通过监测宁夏荒漠化易发生区域的动态变化趋势,及时为宁夏荒漠化防治工作布局提供参考信息.
英文摘要	Desertification has posed a huge threat to the natural ecological environment and human society, and has been one of the most serious global environmental and socio-economic problems in the world. Ningxia is located in the arid and semi-arid transition zone of China, which is a highly ecologically sensitive area. In order to monitor the characteristics of desertification sensitivity and its spatiotemporal changes in Ningxia, four factors, such as soil, topography, natural environment, and socio-economic predictive factors, were selected to model and analyze land desertification sensitivity of Ningxia using logistic regression model in this study. Based on the desertification sensitivity of Ningxia in 2001 and 2017, the following conclusions were obtained in this study: 1) The logistic regression model could be used to detect the desertification sensitivity of Ningxia. The accuracy of the model in 2001 reached 85%, and the accuracy of the model in 2017 reached 78%; 2) The regions of Ningxia were ranked according to the desertification sensitivity from low to high, which were the northern Yellow River irrigation area, the southern loess hilly area, and the central arid area; 3) Compared with 2001, the risk level of desertification in Ningxia in 2017 showed a general decreasing trend. Approximately 39 percent of high-risk and extremely high-risk zones were converted into low-risk and medium-risk-grade zones, because of prohibition of grazing and implementation of artificial ecological restoration methods. This study could provide timely reference information for the implementation of desertification prevention and control work in Ningxia by monitoring the dynamic changes of desertification-prone areas in Ningxia.
中文关键词	荒漠化敏感度 ; Logistic回归模型 ; 时空变化
英文关键词	desertification sensitivity logistic regression spatiotemporal change
类型	Article
语种	中文
收录类别	CSCD
WOS类目	Environmental Sciences & Ecology
CSCD记录号	CSCD:6829096
来源机构	北京师范大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/353323
作者单位	潘玉豪, 北京师范大学地理科学学部, 遥感科学国家重点实验室;;北京市陆表遥感数据产品工程技术研究中心, 北京 100875, 中国. 陈云皓, 北京师范大学地理科学学部, 遥感科学国家重点实验室;;北京市陆表遥感数据产品工程技术研究中心, 北京 100875, 中国. 张旭晨, 北京师范大学地理科学学部, 遥感科学国家重点实验室;;北京市陆表遥感数据产品工程技术研究中心, 北京 100875, 中国. 杜晓铮, 北京师范大学地理科学学部, 遥感科学国家重点实验室;;北京市陆表遥感数据产品工程技术研究中心, 北京 100875, 中国. 赵祥, 北京师范大学地理科学学部, 遥感科学国家重点实验室;;北京市陆表遥感数据产品工程技术研究中心, 北京 100875, 中国. 曹飞, 生态环境部卫星环境应用中心, 北京 100094, 中国. 孙中平, 生态环境部卫星环境应用中心, 北京 100094, 中国.
推荐引用方式 GB/T 7714	潘玉豪,陈云皓,张旭晨,等. 宁夏土地荒漠化敏感度时空变化分析[J]. 北京师范大学,2020,56(4):582-590.
APA	潘玉豪.,陈云皓.,张旭晨.,曹飞.,孙中平.,...&赵祥.(2020).宁夏土地荒漠化敏感度时空变化分析.北京师范大学学报. 自然科学版,56(4),582-590.
MLA	潘玉豪,et al."宁夏土地荒漠化敏感度时空变化分析".北京师范大学学报. 自然科学版 56.4(2020):582-590.