干旱区生态环境知识资源中心(Arid): 古尔班通古特沙漠南缘干季土壤水分含量空间异质性

Arid

	古尔班通古特沙漠南缘干季土壤水分含量空间异质性
其他题名	Multi-scale Spatial Heterogeneity of Soil Moisture in the South Gurbantunggut Desert during Dry Period
	李军 1; 王新军 1; 贾宏涛 1; 赵成义2
来源期刊	中国沙漠
ISSN	1000-694X
出版年	2016
卷号	36 期号:6 页码:1628-1636
中文摘要	土壤水分含量是荒漠植被发育的主要制约因子。对古尔班通古特沙漠南缘个体、群落、丘间地0~100cm干季土壤水分含量的空间异质性进行分析。结果表明:(1)同尺度下,土壤水分含量随土层深度增加呈显著升高趋势,且表层土壤水分含量的变异系数高于其他土层。(2)个体尺度,梭梭树干基部周围土壤水分含量在垂直和水平方向存在格局分异。垂直方向,土壤水分含量随土层深度增加呈升高趋势。水平方向,随距树干基部距离增加,坡顶土壤水分含量呈升高趋势,坡中和坡底土壤水分含量呈降低趋势,但没有显著差异。(3)梭梭群落尺度上土壤水分含量异质性较强,且呈斑块状分布。(4)地形是影响丘间地尺度土壤水分含量空间分异的主要因素,形成坡底土壤水分含量最高、坡中次之、坡顶最低的空间分布格局。
英文摘要	Soil moisture is one of the main limiting factors to vegetation development in arid and semi-arid area. During the dry season,spatial heterogeneity of soil moisture at the individual scale,community scale and dune-interdune lands scale was measured in the south Gurbantunggut Desert in 0-100 cm depth.Results showed that at the same scale,average soil moisture increased significantly with soil depth increasing from0 to 100 cm.However,the coefficient variation (CV)of top soil was greater than other soil depths.At the vertical and horizontal directions,the patterns of spatial distribution of soil moisture around H.ammodendron base at individual scale were different.In the vertical directions,the soil moisture increased with the soil depths increasing;In the horizontal directions,with the outward from tree base increased,the soil moisture at crest increased,while the soil moisture decreased at midslope and interdune,and the difference was not significant. On H.ammodendroncommunity scale,the spatial heterogeneity of soil moisture is strong,and represented a patch-shaped distribution.Terrain factor is the main factor which affect the spatial heterogeneity of soil moisture at the scale of dune-interdune lands,which lead the soil moisture was highest at the interdune, and lowest at the upper slope.
中文关键词	土壤水分含量 ; 空间异质性 ; 古尔班通古特沙漠 ; 尺度
英文关键词	soil moisture spatial heterogeneity Gurbantunggut Desert scale
语种	中文
国家	中国
收录类别	CSCD
WOS类目	AGRICULTURE MULTIDISCIPLINARY
WOS研究方向	Agriculture
CSCD记录号	CSCD:5910387
来源机构	中国科学院新疆生态与地理研究所 ; 新疆农业大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/235461
作者单位	1.新疆农业大学草业与环境科学学院, 乌鲁木齐, 新疆 830052, 中国; 2.中国科学院新疆生态与地理研究所, 乌鲁木齐, 新疆 830011, 中国
推荐引用方式 GB/T 7714	李军,王新军,贾宏涛,等. 古尔班通古特沙漠南缘干季土壤水分含量空间异质性[J]. 中国科学院新疆生态与地理研究所, 新疆农业大学,2016,36(6):1628-1636.
APA	李军,王新军,贾宏涛,&赵成义.(2016).古尔班通古特沙漠南缘干季土壤水分含量空间异质性.中国沙漠,36(6),1628-1636.
MLA	李军,et al."古尔班通古特沙漠南缘干季土壤水分含量空间异质性".中国沙漠 36.6(2016):1628-1636.