干旱区生态环境知识资源中心(Arid): 新疆柽柳立地土壤养分的空间变异特征

Arid

	新疆柽柳立地土壤养分的空间变异特征
其他题名	Soil Nutrient Characteristic of Tamarix site in Xinjiang
	张莉燕; 盛建东; 武红旗; 朱建雯; 高军
ISSN	1001-7488
出版年	2009
卷号	45 期号:3 页码:54-60
中文摘要	利用地统计学和GIS技术,研究南疆塔河和北疆阜康灌丛柽柳下的土壤养分"肥岛"效应及空间变异性.结果表明:1)柽柳具有较明显的聚集养分的功能,冠幅内外的养分富集率普遍大于1,但是柽柳枯死后这种富集作用就逐渐消退,并且北疆的柽柳富积率高于南疆,不同发育阶段的柽柳"肥岛"特征没有明显差异;2)阜康柽柳立地土壤养分"肥岛"的作用范围为3.9～14.8 m,塔河柽柳"肥岛"的作用范围为6.2～10.1 m,有效作用范围均在冠幅外,并与冠幅成正比;3)研究区柽柳立地土壤养分具有强烈的空间相关性,且其变异主要是由结构性因素引起的.由于在新疆干旱区较弱的生物富集作用与强烈的风蚀沙化作用并存,导致该区荒漠植被柽柳的"肥岛"强度较弱.
英文摘要	The ’fertile islands’ is formed under integration of biological and non-biological process and it is a phenomenon that soil nutrients are enriched around shrubs in arid and semi-arid regions, and the soil nutrients decrease gradually from canopy center to canopy outside. This paper studied soil nutrient ’ fertile islands’ effective range and spatial variability of Tamarix shrubs in Fukang of north Xinjiang and the Tarim river of south Xinjiang with Geo-statistics and GIS technology. The results indicated: Tamarix had a visible function to congregate nutrients,and the enrichment ratio of inside to outside of canopy was general over one. Once Tamarix had withered, this function was fading away. The enrichment ratio of north of Xinjiang was bigger than that of south of Xinjiang. However there was no significant diference in ’ fertile islands’ characteristic over the different growth stages of Trmarix. The ’fertile islands’ effective range in Tamarix in Fukang was 3.9～14.8 m, while the ’fertile islands’ effective range was 6.2～10.1 m in the Tarim river. The effective function range was all over canopy. In the research area, soil main nutrition presented intense spatial self-correlation, and the spatial variability was determined mostly by structural factors. A weak Aeolian enrichment and intensive desertification in arid area of Xinjiang weakened ’ fertile islands’ function by the deserted vegetation, Tamarix.
中文关键词	柽柳 ; "肥岛" ; 土壤养分 ; 冠幅 ; 空间变异
英文关键词	Tamarix ’fertile island’ soil nutrition canopy spatial variability
语种	中文
国家	中国
收录类别	CSCD
WOS类目	FORESTRY
WOS研究方向	Forestry
CSCD记录号	CSCD:3753025
来源机构	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/2XILL650/223913
作者单位	新疆农业大学草业与环境科学学院, 乌鲁木齐, 新疆 830052, 中国
推荐引用方式 GB/T 7714	张莉燕,盛建东,武红旗,等. 新疆柽柳立地土壤养分的空间变异特征[J]. 新疆农业大学,2009,45(3):54-60.
APA	张莉燕,盛建东,武红旗,朱建雯,&高军.(2009).新疆柽柳立地土壤养分的空间变异特征.,45(3),54-60.
MLA	张莉燕,et al."新疆柽柳立地土壤养分的空间变异特征".45.3(2009):54-60.