干旱区生态环境知识资源中心(Arid): 甘肃省河西灌漠土微量元素的空间变异特征

Arid

	甘肃省河西灌漠土微量元素的空间变异特征
其他题名	Spatial Variabilitiy of Trace Elements of Irrigated Desert Soil in Zhangye and Wuwei, Gansu Province
	赵良菊 1; 肖洪浪1 ; 郭天文 2; 赖丽芳 2; 杨文玉 2; 包兴国 2
来源期刊	水土保持学报
ISSN	1009-2242
出版年	2004
卷号	18 期号:5 页码:27-30,34
中文摘要	用传统统计和地统计方法相结合,对甘肃省武威及张掖灌漠土耕层土壤有效B,Cu,Fe,Mn及Zn等微量元素的空间变异特征进行了研究.结果表明:武威土壤有效Zn和Fe普遍缺乏,张掖土壤除Zn较缺乏外,其余元素均较充足.描述性统计结果显示不同土壤微量元素的变异程度各不相同.地统计分析结果表明,武威和张掖土壤微量元素空间分布的最大相关距分别在192～477 m及141～206 m之间;武威土壤中除有效B含量具有中等的空间自相关性外,其余微量元素及张掖土壤所有微量元素均具有强烈的空间自相关性.武威和张掖土壤微量元素分布的分形维数变化范围分别为1.804～1.947及1.945～1.987,其中武威土壤有效B的最低,并具有中等变异程度,其空间变异主要由施肥、作物、管理水平等人为因素引起.其余微量元素及张掖灌漠土微量元素含量的空间分布强烈自相关,其变异主要由土壤母质、地形、气候等非人为因素引起.且张掖土壤中微量元素的空间自相关性比武威的强烈,即包括人为活动在内的表生作用对该土壤微量元素分布的影响较弱.
英文摘要	On the basis of traditional statistic and Geo-statistic methods, the spatial variability of trace elements, such as available B, Cu, Fe, Mn and Zn of irrigated desert soils in Wuwei and Zhangye, Gansu Province, was analysed. The results showed that B, Cu and Mn were abundant in soil from Wuwei and Zn in soil from Zhangye. By analysis of traditional statistic there were different coefficient variabilities of each trace elements in tested soils. The results of Geo-statistics showed that the variations of effective ranges of trace elements were 192~477,141~ 206 m in Wuwei and Zhangye soils, respectively; By ratio of nugget to sill the spatial variability of B in Wuwei was moderate. The spatial variabilities of other elements in Wuwei and Zhangye were stronger and their ratios of nugget to sill were from 0. 126% to 13. 362% and from 0. 038% to 2. 684% , respectively. The fractal demisions of soils from Wuwei and Zhangye ranged from 1. 804 to 1. 947 and from 1. 945 to 1. 987, and the factual demision available B was lowest among all fractal demisions of trace elements. In a word, by analysis of CV%, ratios of nugget to Sill and fractal demisions of trace elements in soils from Wuwei and Zhangye, it was concluded that there was moderate auto-correlation of available-B in irrigated desert soil from Wuwei and its variability was main-ly caused by man-made activities, and other trace elements had strong spatial auto-correlations in soils from Wuwei and Zhangye and their spatial variabilities were brought by not man-made factors, such as soil materials, topographty and climate. Compared with the variety of trace elements of soil in Wuwei, the auto-correlations of trace elements in Zhangye soil were stronger, it was thowed that the effects of man-made activities on the trace el-ements of Zhangye soil were weaker than that of Wuwei soil.
中文关键词	灌漠土 ; 微量元素 ; 空间变异性 ; 地统计学
英文关键词	irrigated desert soil trace element spatial variability Geo-statistic
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:1651584
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/205494
作者单位	1.中国科学院, 兰州, 甘肃 730000, 中国; 2.甘肃省农业科学院, 兰州, 甘肃 730000, 中国
推荐引用方式 GB/T 7714	赵良菊,肖洪浪,郭天文,等. 甘肃省河西灌漠土微量元素的空间变异特征[J],2004,18(5):27-30,34.
APA	赵良菊,肖洪浪,郭天文,赖丽芳,杨文玉,&包兴国.(2004).甘肃省河西灌漠土微量元素的空间变异特征.水土保持学报,18(5),27-30,34.
MLA	赵良菊,et al."甘肃省河西灌漠土微量元素的空间变异特征".水土保持学报 18.5(2004):27-30,34.