干旱区生态环境知识资源中心(Arid): 喀斯特山地石漠化的垂直变异

Arid

	喀斯特山地石漠化的垂直变异
其他题名	Vertical variability of rock desertification in Karst mountainous areas
	罗林 1; 周应书 2; 何兴辉 3; 谢永贵 2; 王敏 2; 吴明艳 2
ISSN	1000-0933
出版年	2009
卷号	29 期号:1 页码:332-336
中文摘要	应用地统计学对地处滇黔桂连片喀斯特腹地,海拔垂直梯度变化范围广的贵州省毕节地区石漠化指标垂直梯度的空间变异进行分析。基岩裸露率的半变异函数最佳理论模型为线性有基台模型,植被覆盖率、砾石含量为球状模型。植被覆盖率的空间异质比为22.32%,具有强烈的垂直梯度空间相关性,主要受到随海拔梯度变化的自然性控制因素作用;基岩裸露率、砾石含量的空间异质比分别为34.38%、25.97%,均具有中等程度的垂直梯度空间相关性,受随机因素作用较大。砾石含量、植被覆盖率的变程分别为968.10m、859.48m,受因素影响的海拔范围都较宽;基岩裸露率的变程为52.28m,受因素影响的海拔范围很窄。基岩裸露率、植被覆盖率的Moran′s I系数随海拔梯度变化的趋势相类似,但砾石含量的差别较大。
英文摘要	The vertical gradient variation of rock desertification index was analyzed using geostatistics for Bijie region,Guizhou province, that exhibits wide altitudinal variation in the centre of Yunnan,Guizhou,Guangxi Karst area.Optimal semivariogram theoretical model of bedrock expose rate was fitted well with linear sill model,and vegetation cover and gravel content were fitted with spherical model.Vegetation cover rate(VCR),which mainly affected by natural control factors correlated with altitudinal variation,was highly related to vertical gradient.The rate of nugget to sill of VCR was 22.32%.Bedrock expose rate and gravel content were mainly affected by random factors,which had moderately relativity with vertical gradient and their rates of nugget to sill were 34.38% and 5.97%,respectively.The altitudinal ranges of gravel content and vegetation cover rate were 968.10 m and 859.48 m,respectively,indicating wide range of altitudinal effect.The altitudinal range of bedrock expose rate was 52.28m,indicating narrow range of altitudinal effect.Similarity was found between the trend of Moran′s I of bedrock expose rate and trend of Moran′s I of vegetation cover rate along altitudinal gradient.However,trend of gravel content showed greater different from the other two.
中文关键词	喀斯特 ; 石漠化 ; 垂直梯度、地统计学 ; 空间变异
英文关键词	Karst rock desertification vertical gradient geostatistics spatial variability
语种	中文
国家	中国
收录类别	CSCD
WOS类目	MINERALOGY ; ECOLOGY ; ENVIRONMENTAL SCIENCES
WOS研究方向	Mineralogy ; Environmental Sciences & Ecology
CSCD记录号	CSCD:3492710
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/224027
作者单位	1.贵州省毕节地区水土保持办公室, 毕节, 551700; 2.贵州省毕节地区林业科学研究所, 毕节, 551700; 3.贵州省林业调查规划院, 贵阳, 贵州 550003, 中国
推荐引用方式 GB/T 7714	罗林,周应书,何兴辉,等. 喀斯特山地石漠化的垂直变异[J],2009,29(1):332-336.
APA	罗林,周应书,何兴辉,谢永贵,王敏,&吴明艳.(2009).喀斯特山地石漠化的垂直变异.,29(1),332-336.
MLA	罗林,et al."喀斯特山地石漠化的垂直变异".29.1(2009):332-336.