干旱区生态环境知识资源中心(Arid): 古尔班通古特沙漠南部风沙土性状在沙垄尺度上的空间变异

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	古尔班通古特沙漠南部风沙土性状在沙垄尺度上的空间变异
其他题名	Spatial variation of physical and chemical properties for eolian sand soil at longitudinal dune scale in southern Gurbantunggut Desert
	钱亦兵 1; 吴兆宁 2; 王忠臣 1; 蒋超 1; 杨海峰 1
来源期刊	地理研究
ISSN	1000-0585
出版年	2011
卷号	30 期号:7 页码:1178-1186
中文摘要	在新疆古尔班通古特沙漠南部纵向沙垄上,按5 m*5 m的网格采集浅层风沙土组合样品184件,调查植被样方100个,并测试了风沙土质地、pH、盐分、含水量、全N含量和有机质含量等理化性状。研究发现:受沙垄地貌和植被格局的影响,风沙土性状具有中等到强烈的空间相关性,空间依赖范围(变程)介于21.3~74.8m,大致对应着单一沙垄宽度或垄间地沙垄垄间地的地貌单元宽度。利用地统计分析求得不同取样尺度上的分维D。风沙土质地(粒径、平均粒径、分选系数)和盐分(电导率)及养分(有机质和全N含量)在0~40m的取样间隔下,D较大,空间变异程度基本处于中高水平;在90~150m的取样间隔下,D骤减,空间异质性大大增强。风沙土含水量的空间变异强度曲线为几段式形态,并且分维依次递减。
英文摘要	The spatial variation of physical and chemical properties for eolian sand soil at longitudinal dune scale in southern Gurbantunggut Desert was studied by means of geostatistical methods.In the study,184 samples of eolian sand soil from the quadrats of 5 m* 5 m were systemically collected over the dune crests,slopes and interdune areas of two longitudinal dunes in southern Gurbantunggut Desert and 100 quadrats of vegetation were measured.The physical and chemical properties of eolian sand soil,including soil grainsize parameters,pH,salts,water content,total N and organic matter were determined.The results show that under the impact of longitudinal dune landform characteristics,including elevation,slope aspect,slope angle and partial micro-terrain and vegetation pattern,the physical and chemical properties of eolian sand soil have the variance of weak to medium extent and the spatial autocorrelation of moderate to strong extent.The values of spatial correlated ranges are 21.3-74.8 m,which approximately correspond to a width of single longitudinal dune or a width of landform unit from interdune area to dune to interdune.Because these soil properties have a nest structure of different level systems,the fractal dimensions,D values at different scales were gained.The D values of soil grain-size parameters (phi1,Mz,sigma),soil salts (EC)and soil nutrients (organic matter and total N)in a sampling interval of 0-40 m are larger,and the spatial variation is basically medium to high level.Under a sampling interval of 90-150 m,the D values were sharply reduced and the spatial variations were greatly increased.The curve of variation strength for soil water contents was in several segments and the D values were gradually decreased in turn.The mechanism of the close relationship of the spatial variations between soil total N and organic matter contents shows that the spatial variations of the soil physical and chemical properties,which are expressed by the fractal dimensions and not regularly preprocessed,well accord with the field facts.
中文关键词	古尔班通古特沙漠 ; 沙垄尺度 ; 风沙土性状 ; 空间变异 ; 分维
英文关键词	Gurbantunggut Desert longitudinal dune scale physical-chemical properties of eolian sand soil spatial variation fractal dimension
语种	中文
国家	中国
收录类别	CSCD
WOS类目	ECONOMICS
WOS研究方向	Business & Economics
CSCD记录号	CSCD:4276853
来源机构	中国科学院新疆生态与地理研究所 ; 新疆大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/226284
作者单位	1.中国科学院新疆生态与地理研究所, 乌鲁木齐, 新疆 830011, 中国; 2.新疆大学地质与勘查工程学院, 乌鲁木齐, 新疆 830046, 中国
推荐引用方式 GB/T 7714	钱亦兵,吴兆宁,王忠臣,等. 古尔班通古特沙漠南部风沙土性状在沙垄尺度上的空间变异[J]. 中国科学院新疆生态与地理研究所, 新疆大学,2011,30(7):1178-1186.
APA	钱亦兵,吴兆宁,王忠臣,蒋超,&杨海峰.(2011).古尔班通古特沙漠南部风沙土性状在沙垄尺度上的空间变异.地理研究,30(7),1178-1186.
MLA	钱亦兵,et al."古尔班通古特沙漠南部风沙土性状在沙垄尺度上的空间变异".地理研究 30.7(2011):1178-1186.