干旱区生态环境知识资源中心(Arid): 贵州省岩溶地区坡度与土地石漠化空间相关分析

Arid

	贵州省岩溶地区坡度与土地石漠化空间相关分析
其他题名	Correlation Between Rocky Desertification and Slope Degree in Karst Area of Guizhou
	李瑞玲 1; 王世杰1 ; 熊康宁2 ; 周德全 2
ISSN	1000-288X
出版年	2006
卷号	26 期号:4 页码:82-86
中文摘要	喀斯特石漠化从本质上来讲是喀斯特地区的成土速率远小于水土流失的速率而造成的土地生产力的退化过程.坡度起伏决定着地表现代侵蚀作用的强弱,影响着水土流失的强度;坡度越大,地表物质的不稳定性就越强,土壤越容易遭受侵蚀而变薄.在前期工作中,构筑了贵州省岩溶地区1∶500 000坡度分级图和石漠化分布图,对岩溶地区坡度图和石漠化图进行空间叠加分析,研究坡度与石漠化形成的相关关系.贵州省岩溶地区坡度主要集中于10°～25°之间,不同程度石漠化分布最集中的地区是＞25°的坡地区;在坡度＞18°的地区,石漠化的发生率基本随着坡度的增大而增大,强度石漠化的表现尤为明显;＜18°的坡地区石漠化程度主要以轻度和中度为主.
英文摘要	Rocky desertification in the karst area is a land degradation process in nature where the rate of soil formation is lower than that of soil erosion. Slope degree affects the extent of soil erosion. The greater slope degree is, the more instable surface material is. The two maps of slope gradient and desertification distribution on a scale of 1:500 000 in Guizhou Province were overlapped and analyzed in order to discuss the correlation between slope degree and rocky desertification. It.was found that slop degrees ranged mainly from 10"to 25°. Where slope degree was greater than 25°, the possibilities of the desertification occurrence at low, moderate or strong rate were all very high. In addition, the occurrence of rocky desertification increased as slope increased, especially where slope degree was greater than 18°, the trend toward strong rocky desertification was apparent. The desertification was mainly at low or moderate extent where slope degree was less than 18°. The reasons for the correlation between desertification and slope degree in this region were discussed preliminarily.
中文关键词	石漠化 ; 坡度 ; 相关分析 ; 岩溶地区
英文关键词	rocky desertification slope degree correlation analysis karst area
语种	中文
国家	中国
收录类别	CSCD
WOS类目	MINERALOGY
WOS研究方向	Mineralogy
CSCD记录号	CSCD:2412813
来源机构	贵州师范大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/220126
作者单位	1.中国科学院,地球化学研究所, 环境地球化学国家重点实验室, 贵阳, 贵州 550002, 中国; 2.贵州师范大学,地理与生物科学学院, 贵阳, 贵州 550001, 中国
推荐引用方式 GB/T 7714	李瑞玲,王世杰,熊康宁,等. 贵州省岩溶地区坡度与土地石漠化空间相关分析[J]. 贵州师范大学,2006,26(4):82-86.
APA	李瑞玲,王世杰,熊康宁,&周德全.(2006).贵州省岩溶地区坡度与土地石漠化空间相关分析.,26(4),82-86.
MLA	李瑞玲,et al."贵州省岩溶地区坡度与土地石漠化空间相关分析".26.4(2006):82-86.