干旱区生态环境知识资源中心(Arid): 重庆岩溶地区石漠化分布与地理环境因素的关系

Arid

	重庆岩溶地区石漠化分布与地理环境因素的关系
其他题名	Relationships between the Stony Desertification and Geographical Environments Factors at the Karst Region in Chongqing
	魏兴萍; 杨华
来源期刊	重庆师范大学学报. 自然科学版
ISSN	1672-6693
出版年	2014
卷号	31 期号:5 页码:60-67,159
中文摘要	为了理解重庆石漠化形成机理,运用ArcGIS栅格叠加和主成份分析功能,分析了重庆岩溶地区石漠化强度空间分布与地理环境因素的关系。得出结论:1)石漠化分布地区土层厚度较薄,厚度在39 cm以下的石漠化面积占51.29%,厚度在20 cm的石漠化面积占32.92%;2)石漠化严重的区域主要分布在>15°坡度区域;3)石漠化区域2010年土壤侵蚀强度等级较1999年有了明显降低,突出表现在极强度、中度土壤侵蚀,从面积比例来看,分别比1999年降低了4.78%、2.55%;4)石漠化在高程上的分布主要集中在500~800 m和1000~1500 m范围;5)岩溶面积分布与农业劳动力、耕地面积呈高度正相关,相关系数达0.7以上。石漠化程度与土层厚度、坡度和高程呈负相关关系,石漠化程度与土壤侵蚀强度呈正相关关系。根据石漠化成因,提出了相应的石漠化治理思路。
英文摘要	The relationship between rocky desertification intensity and geographical environment factors in karst area in Chongqing was studied by using raster overlay analysis (ArcGIS) and principal component analysis to facilitate our understanding of the rocky desertification formation mechanism in this area. Our results concluded: 1) The soil layers in the rocky desertification area tended to be thin,with 51. 29% of them below 39 cm,and 32. 92% below 20 cm; 2) The more seriously decertified rocky region mainly distributed in areas with a slope above15 o; 3) The level of soil erosion intensity in the rocky desertification region decreased significantly in 2010 when compared to 1999. This was especially true in the extremely strong and moderate erosion areas,and the erosion deceased by 4. 78% and 2. 55% respectively;4) the rocky desertification mostly distributed in areas with elevation in the ranges of 500-800 meters and 1 000-1 500 meters; 5) the karst area was positively correlated with agricultural labor and farmland area with a correlation coefficient above 0. 7. The rocky desertification was negatively correlated with soil depth,slope and elevation,and positively correlated with the soil erosion intensity. Rocky desertification control measures were proposed based on the causes of rocky desertification.
中文关键词	岩溶地区 ; 石漠化 ; 地理环境因素 ; 重庆
英文关键词	karst region rocky desertification geographical environment factors Chongqing
语种	中文
国家	中国
收录类别	CSCD
WOS类目	OCEANOGRAPHY
WOS研究方向	Oceanography
CSCD记录号	CSCD:5249302
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/232299
作者单位	重庆师范大学地理与旅游学院, GIS应用研究重庆市高校重点实验室
推荐引用方式 GB/T 7714	魏兴萍,杨华. 重庆岩溶地区石漠化分布与地理环境因素的关系[J],2014,31(5):60-67,159.
APA	魏兴萍,&杨华.(2014).重庆岩溶地区石漠化分布与地理环境因素的关系.重庆师范大学学报. 自然科学版,31(5),60-67,159.
MLA	魏兴萍,et al."重庆岩溶地区石漠化分布与地理环境因素的关系".重庆师范大学学报. 自然科学版 31.5(2014):60-67,159.