干旱区生态环境知识资源中心(Arid): 广西凤山县林地石漠化指数研究

Arid

	广西凤山县林地石漠化指数研究
其他题名	Study on rocky desertification index for Fengshan county of Guangxi province
	吕飞舟 1; 石程远 2; 李典军 1; 吕勇 1
来源期刊	中南林业科技大学学报
ISSN	1673-923X
出版年	2015
卷号	35 期号:9 页码:104-108
中文摘要	为了准确评定林地石漠化等级,以广西凤山县林地为案例,提出了林地石漠化指数这一定量新指标来量化评价林地石漠化的程度。根据林地的基岩裸露率、植被综合覆盖度、坡度、土层厚度4个指标对林地石漠化评价的重要程度,釆用专家打分得到重要性比较结果,釆用层次分析法计算得出各个指标的权重值。结果表明:基岩裸露率、植被综合覆盖度、坡度、土层厚度4个指标的权重值分别为0.553 4、0.284 1、0.062 9、0.099 6,表明林地石漠化指数各指标重要性最大的是基岩裸露率,其次是植被综合覆盖度,然后是土层厚度、坡度;无石漠化、潜在、轻度、中度、强度、极强度各等级的石漠化指数区间分别为[0,0.161]、(0.161,0.352]、(0.352,0.418]、 (0.418,0.720]、(0.720,0.868]、(0.868,1]。利用该指数能够实现对广西凤山县林地的石漠化程度等级的量化评定。
英文摘要	In order to accurately assess the rocky forestland desertification grade, by taking the forestland in Fengshan county of Guangxi province as a studied object, a new quantitative indicator index of rocky desertification was proposed to quantify the rocky forestland evaluation. According to the importance degrees of four indexes (bedrock exposed rate, comprehensive vegetation coverage rate, slope, soil thickness) to evaluation of rocky desertification, the comparison results of importance was obtained by using expert scoring method, and the weight values of each index were calculated by using analytic hierarchy process method. The results show that the weight values of bedrock exposed rate, comprehensive vegetation coverage rate, slope, soil thickness were 0.5534, 0.2841, 0.0629, 0.0996 respectively, indicating the importance of indicator of all indicators was the bedrock exposed rate, followed by comprehensive vegetation coverage rate, soil thickness, slope; And the index intervals of rocky desertification index of no rocky, potentially, mild, moderate, strength and extreme strength rocky grade were [0,0.161], (0.161,0.352], (0.352,0.418], (0.418,0.720], (0.720,0.868], (0.868,1] respectively. The rocky desertification forestland grade indicator index system can quantitatively evaluated the forestland rocky desertification status quo in Fengshan County of Guangxi Province.
中文关键词	林地石漠化 ; 石漠化指数 ; 广西凤山县
英文关键词	forestland rocky desertification rocky desertification index Fengshan county of Guangxi province
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:5524983
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/233846
作者单位	1.中南林业科技大学, 长沙, 湖南 410004, 中国; 2.广西林业设计院, 南宁, 广西 530011, 中国
推荐引用方式 GB/T 7714	吕飞舟,石程远,李典军,等. 广西凤山县林地石漠化指数研究[J],2015,35(9):104-108.
APA	吕飞舟,石程远,李典军,&吕勇.(2015).广西凤山县林地石漠化指数研究.中南林业科技大学学报,35(9),104-108.
MLA	吕飞舟,et al."广西凤山县林地石漠化指数研究".中南林业科技大学学报 35.9(2015):104-108.