干旱区生态环境知识资源中心(Arid): 古尔班通古特沙漠南缘浅层风沙土含水量空间变异

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	古尔班通古特沙漠南缘浅层风沙土含水量空间变异
其他题名	Spatial Variation of Moisture Content in Shallow Aeolian Sandy Soil in the Southern Marginal Zone of the Gurbantonggut Desert
	蒋超 1; 钱亦兵 1; 杨海峰 1; 侯海生 2
ISSN	1001-4675
出版年	2009
卷号	26 期号:4 页码:519-525
中文摘要	2008年5月,在古尔班通古特沙漠南缘梧桐沟区段设置200 m*50 m样地,均匀选取180个样点进行样方的植被、地形和地貌调查,并且采取表层(0～10 cm)和次表层(10～30 cm)土壤样品进行土壤含水量分析.借助地统计软件GS+和ArcGIS地统计模块分析研究区土壤含水量在沙垄不同地貌条件下的空间变异规律.结果显示:两层土壤水分的半方差函数值拟合为指数模型;表层和次表层土壤水分的变程分别为37.8 m和21.3 m,偏基台值与基台值的比值[C/(C_0+C)]分别为75.1%和75.6%,说明两层土壤水分具有强烈的空间自相关性,也表明土壤水分的变异主要由结构性差异所引起,客观地反映了研究区土壤水分的空间格局特征.克里格插值图显示,土壤水分随地势的升高而增大,平均数分析表明,0～10 cm土壤含水量由高至低的变化趋势是:垄顶>迎风坡>背风坡>垄间地,而10～30 cm则为:迎风坡>垄顶>垄间地>背风坡.
英文摘要	In May 2008,the vegetation,terrain and landforms were investigated at a plot of 200 m * 50 m in a typical region of longitudinal sand dunes in the southern marginal zone of the Gurbantonggut Desert.At the plot 180 quadrats were selected for the observation,measurement and soil sampling.These soil samples were sampled from the surface layer(0～10 cm)and shallow layer(10～30 cm),and their moisture content values were measured. Under the support of geostatistical software,such as GS~+ and geostatistical model in ArcGis,this paper analyzes the spatial varying pattern of soil moisture content at the different positions of two longitudinal sand dunes in the study area.The results show that the semi-variance functional values of soil moisture content in the two layers can be well fitted as an exponential model.The variation ranges of surface layer and shallow layer of aeolian sandy soil are 37.8 m and 21.3 m,and the ratios of partial sill and sill[C/(C_0+C)]are 75.1% and 75.6%,respectively.These reveal that there is a high spatial autocorrelation in soil moisture between the surface layer and the shallow layer of aeolian sandy soil,and the spatial variation of the soil moisture content comes mainly from a structural difference. The results can objectively reflect the spatial structure pattern of soil moisture in the plot.The figure of Kriging interpolation shows that soil moisture content is correspondently increased with the height increase of terrain.The analyzed results show that the values of soil moisture content are in an order of crest>windward slope>leeward slope>inter-dune land in the surface layer(0～10 cm)of aeolian sandy soil,and an order of windward slope>crest>leeward slope>inter-dune land in the shallow layer(10>30 cm).
中文关键词	浅层风沙土 ; 土壤含水量 ; 空间变异 ; 地统计软件 ; 古尔班通古特沙漠
英文关键词	shallow Aeolian Sandy Soil the Curbantonggut Desert soil moisture content spatial variation geostatistics
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:3659134
来源机构	中国科学院新疆生态与地理研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/223618
作者单位	1.中国科学院新疆生态与地理研究所, 中科院绿洲生态与荒漠环境重点实验室, 乌鲁木齐, 新疆 830011, 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	蒋超,钱亦兵,杨海峰,等. 古尔班通古特沙漠南缘浅层风沙土含水量空间变异[J]. 中国科学院新疆生态与地理研究所,2009,26(4):519-525.
APA	蒋超,钱亦兵,杨海峰,&侯海生.(2009).古尔班通古特沙漠南缘浅层风沙土含水量空间变异.,26(4),519-525.
MLA	蒋超,et al."古尔班通古特沙漠南缘浅层风沙土含水量空间变异".26.4(2009):519-525.