干旱区生态环境知识资源中心(Arid): 岩溶地区坡度与土地石漠化的空间相关性分析

Arid

	岩溶地区坡度与土地石漠化的空间相关性分析
其他题名	Correlation analysis between rocky desertification and slope degree in karst area of Shaodong county
	石军南; 卢海燕; 唐代生; 张丹华
来源期刊	中南林业科技大学学报
ISSN	1673-923X
出版年	2012
卷号	32 期号:10 页码:84-88
中文摘要	喀斯特石漠化的本质是水土流失导致土地生产力退化的过程,而坡度大小则影响着水土流失的强度。利用相关调查资料和研究数据,针对邵东县岩溶区石漠化强度变化情况,分析岩溶地区坡度与土地石漠化分布的相关性,构建了石漠化强度分布图和坡度图。在GIS技术的支持下,对石漠化强度分布图和坡度图进行叠加分析,探讨坡度与石漠化分布的空间相关关系。结果表明,邵东县岩溶地区坡度主要集中在16°~25°的斜坡和26°~35°的陡坡之间,陡坡区是不同程度石漠化分布最集中的地区;在坡度<25°的地区,石漠化发生率基本随着坡度的增大而增大,极重度石漠化发生率在坡度>25°的陡坡地区增长迅速。因此坡度增大引起的水土流失加剧是形成石漠化的一个重要原因,所得出的石漠化强度分布与坡度关系规律为地方有关部门进行石漠化治理决策提供了依据。
英文摘要	The nature of rocky desertification in the karst area is a process of the soil erosion leading to the degradation of land productivity, while the magnitude of slope degree fluctuation affects the intensity of soil erosion. For the problem of rocky desertification in karst area of Shaodong County is quite serious, to further understand the correlation that between slope degree and the distribution of land rocky desertification in karst area, two maps of slope degree and rocky desertification distribution were constructed by using some relevant survey information and research data. And they were overlapped and analyzed in order to discuss the correlation between slope degree and rocky desertification, which was supported by GIS technology. The results show that slope degrees of Shaodong County mainly concentrated between the slope area(16° ~ 25°) and steep slope area(26° ~ 35°), steep slope area is the most concentrated area where the different level of rocky desertification distribution; The incidence of rocky-desertification increased mainly as the slope increased where slope degree is less than 25°, but the trend toward the extremely severe rocky desertification is growing rapidly where slope degree is greater than 25°, which belongs to steep slope area. Therefore, intensified soil erosion caused by the slope increases is an important reason for the formation of rocky desertification. The findings provide a basis; of rocky desertification control and decisionmaking for the local authorities.
中文关键词	石漠化 ; 坡度 ; 相关性分析 ; 岩溶地区 ; 邵东县
英文关键词	rocky desertification slope degree correlation analysis karst area Shaodong county
语种	中文
国家	中国
收录类别	CSCD
WOS类目	FORESTRY
WOS研究方向	Forestry
CSCD记录号	CSCD:4695685
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/229147
作者单位	中南林业科技大学林业遥感信息工程研究中心, 长沙, 湖南 410004, 中国
推荐引用方式 GB/T 7714	石军南,卢海燕,唐代生,等. 岩溶地区坡度与土地石漠化的空间相关性分析[J],2012,32(10):84-88.
APA	石军南,卢海燕,唐代生,&张丹华.(2012).岩溶地区坡度与土地石漠化的空间相关性分析.中南林业科技大学学报,32(10),84-88.
MLA	石军南,et al."岩溶地区坡度与土地石漠化的空间相关性分析".中南林业科技大学学报 32.10(2012):84-88.