干旱区生态环境知识资源中心(Arid): 贵州喀斯特峰丛洼地石漠化区土壤物理特征时空分异

Arid

	贵州喀斯特峰丛洼地石漠化区土壤物理特征时空分异
其他题名	Spatiotemporal variations of soil physical characteristics in rocky desertification areas of Guizhou karst-cluster depression
	李安定 1; 郭春艳 2; 符裕红 3; 龙秀琴 1
来源期刊	中国岩溶
ISSN	1001-4810
出版年	2017
卷号	36 期号:2 页码:202-206,241
中文摘要	喀斯特峰丛洼地在全国8个石漠化治理区中面积(310万hm~2)居第二位,贵州是全国石漠化最严重的地区。喀斯特生境的高度异质性、土被不连续性,导致土壤物理特性的差异,使持水保水能力有较大差异。为了弄清喀斯特峰丛地石漠化区土壤物理特征时空分异,利用环刀法对贵州喀斯特峰丛洼地石漠化实验区不同季节、不同地貌部位的土壤取样,用SPSS19.0数学统计方法对样品进行统计分析,结果表明:①土壤物理特征存在较大的时空分异,除了少部分为弱变异外,其它均表现为中等变异程度,这与生境类型复杂多样、生境高度异质性有关。②不同坡度土壤物理特征变化不显著,但土壤物理特征在不同地貌部位(上、中、下坡)随季节(春、夏、秋、冬)变化而变化。③不同植被类型下,除了非毛管孔隙度外,土壤自然含水量等物理特征变化极显著。以灌木林、人工林(经果林)分布区域土壤较为疏松、透气性好,而以针叶林或荒草地分布区,土壤粘重,透气性相对较差。
英文摘要	The karst peak cluster depression is ranked as the second place of eight rocky desertification control areas in our country,which is of 3.1 million hm~2. Guizhou province is the region with most serious rocky desertification nationwide. In combination of field investigation with laboratory analysis and using SPSS19.0 statistics method,this work focused on the change of soil physical characteristics in different seasons and different landform parts of this region. The results show that, (1) There is big spatial and temporal differentiations. Besides a few loci with weak variation, others are characterized by medium degrees of variation related to complex and varied habitat types and heterogeneity of habitat height. (2) Soil physical characteristics do not change significantly with slopes,while showing prominent variations in different landforms (upper,middle and lower slopes) and different seasons (spring,summer,autumn,winter). (3) For different vegetation types,in addition to the non-capillary porosity, soil physical characteristics such as natural water content change significantly. In the areas with shrubbery and secondary woodland (economic fruit woods),the soil is relatively loose and the permeability is good,while in the coniferous forests or grassland areas,the soil is viscous and heavy,and the permeability is relatively poor.
中文关键词	喀斯特峰丛洼地 ; 石漠化区 ; 土壤物理特征 ; 时空分异 ; 贵州
英文关键词	karst peak-cluster depression rocky desertification area soil physical characteristics temporal and spatial variation Guizhou Province
语种	中文
国家	中国
收录类别	CSCD
WOS类目	AGRICULTURE MULTIDISCIPLINARY ; GEOSCIENCES MULTIDISCIPLINARY
WOS研究方向	Agriculture ; Geology
CSCD记录号	CSCD:5984667
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/237198
作者单位	1.贵州科学院贵州省山地资源研究所, 贵阳, 贵州 550001, 中国; 2.贵州科学院贵州省植物园, 贵阳, 贵州 550004, 中国; 3.贵州师范学院, 贵阳, 贵州 550018, 中国
推荐引用方式 GB/T 7714	李安定,郭春艳,符裕红,等. 贵州喀斯特峰丛洼地石漠化区土壤物理特征时空分异[J],2017,36(2):202-206,241.
APA	李安定,郭春艳,符裕红,&龙秀琴.(2017).贵州喀斯特峰丛洼地石漠化区土壤物理特征时空分异.中国岩溶,36(2),202-206,241.
MLA	李安定,et al."贵州喀斯特峰丛洼地石漠化区土壤物理特征时空分异".中国岩溶 36.2(2017):202-206,241.