气候变化领域集成服务门户(CCPortal): 乌鲁木齐市雅玛里克山污水灌溉土壤肥力的空间变异研究

CCPortal

	乌鲁木齐市雅玛里克山污水灌溉土壤肥力的空间变异研究
其他题名	Investigation of the Spatial Variability of Fertility in Wastewater Irrigated Soils in Yamalic Mountain,Urumqi,China
	张慧文; 马剑英; 陈发虎; 吕光辉
发表日期	2008
ISSN	1003-7578
卷号	22 期号:8 页码:185-191
中文摘要	本文选取了干旱区有代表性的污水灌溉地区-乌鲁木齐市雅玛里克山,结合GIS,采用地统计学方法研究了污水灌溉区域土壤中的pH、有机质、CEC、总盐、全N、全P、全K7种土壤肥力指标的空间变异性,并采用普通克立格法绘制了各种土壤肥力要素含量的空间分布格局图.结果表明:有机质、总盐、全N、全K的理论模型为指数模型;CEC、全P的理论模型为高斯模型;pH的理论模型为球状模型;pH、有机质、总盐、全N、全K的块金值与基台值之比都在25%以下,说明空间自相关作用强,其含量分布受结构性因素控制;CEC、全P的块金值与基台值之比在25%～75%之间,为中等强度的空间相关性,其分布是由结构性因素和随机性因素共同作用的结果.土壤肥力的相关距变化范围为246.0～2100.0m.
英文摘要	In this paper,the representative wastewater irrigated region in arid area of Yamalic Mountain in Urumqi was selected to investigate the spatial variability of soil fertility by applying Geostatistics combined with GIS.Seven soil fertility elements in wastewater irrigated region were measured including pH,organic composition,CEC,total salt,total nitrogen,total phosphor and total kalium.The distribution patterns of different soil fertility parameters are obtained through a normal Kriging method.The results showed that theoretical semivariogram models of organic composition,total salt,total nitrogen and total kalium were best described with an Exponential model.CEC and total phosphor were best described with a Gaussian model while pH was best described with a Spherical model.The ratios of nugget to sill of pH,organic composition,total salt,total nitrogen and total kalium were under 25%,which indicated that the spatial correlations were all strongly spatially dependent and the spatial variability was primarily controlled by structural factors of parent material.CEC and total phosphor were moderately spatially dependent because the ratio of nugget to sill was 25%～75%.Both structural factors and the random factors equally affected the spatial variability of them.The range of correlation distance in all soil fertility was 246.0～2100.0m.
关键词	污水灌溉土壤肥力地统计学空间变异克立格插值
英文关键词	wastewater irrigation;soil fertility;Geostatistices;spatial variation of soil;Kriging method
语种	中文
WOS研究方向	Agriculture
WOS类目	AGRICULTURE MULTIDISCIPLINARY
CSCD记录号	CSCD:3342911
来源期刊	干旱区资源与环境
来源机构	兰州大学 ; 中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/1682
推荐引用方式 GB/T 7714	张慧文,马剑英,陈发虎,等. 乌鲁木齐市雅玛里克山污水灌溉土壤肥力的空间变异研究[J]. 兰州大学, 中国科学院青藏高原研究所,2008,22(8):185-191.
APA	张慧文,马剑英,陈发虎,&吕光辉.(2008).乌鲁木齐市雅玛里克山污水灌溉土壤肥力的空间变异研究.干旱区资源与环境,22(8),185-191.
MLA	张慧文,et al."乌鲁木齐市雅玛里克山污水灌溉土壤肥力的空间变异研究".干旱区资源与环境 22.8(2008):185-191.