干旱区生态环境知识资源中心(Arid): 民勤绿洲外围不同林龄人工梭梭林的土壤水分特征

Arid

	民勤绿洲外围不同林龄人工梭梭林的土壤水分特征
其他题名	Soil Water in Planted Haloxylon ammodendron Shrubland of Different Age outside Minqin Oasis
	朱雅娟; 贾志清; 刘丽颖; 刘海涛
来源期刊	中国沙漠
ISSN	1000-694X
出版年	2011
卷号	31 期号:2 页码:442-446
中文摘要	2009年6月到9月,每月中旬在民勤绿洲边缘不同林龄(2 a,5a,10 a,20 a,30 a)的人工梭梭林内测试不同深度(20 cm,30 cm,50 cm,100 cm,150 cm和200 cm)的土壤含水量变化情况.分析结果表明,不同林龄的梭梭林内土壤含水量与时间和深度有关.土壤表层含水量主要受自然降雨控制,8月底发生比较大的自然降雨后,9月不同林龄梭梭林内20 cm和30 cm的含水量显著高于其他3个月.土壤50 cm以下的含水量比较稳定,当降雨少,土壤表层含水量低时,可以作为梭梭利用的水分来源.在7月和8月,5a梭梭林内土壤含水量最低,表明梭梭对土壤水分的消耗最多,栽植密度过大,因此,需要间伐减少植株数量才能维持其稳定性
英文摘要	Soil water contents at different depths(20 cm,30 cm,50 cm,100 cm,150 cm and 200 cm) were examined in planted Haloxylon ammodendron shrubland of different stand age(2-year,5-year,10-year, 20-year and 30-year) outside Minqin oasis from June to September,2009. The results showed that soil water contents in H.ammodendron of different stand age were related to precipitation and soil depth. Soil water content at surface Iayer was affected by natural rainfall. In September,soil water contents at 20 cm and 30 cm in H. ammodendron of different stand age were significantly higher than that in other three months because of 25. 8 mm rainfall in late August. Soil water content was relatively stable in deeper depths(>50 cm) and it can be used by H. ammodendron when surface soil water was absent in period with lower rainfall. In July and August,soil water content in planted 5-year H. ammodendron shrubland was the lowest(≤1%) because the plant density was too high for 5-year planted H. ammodendron shrubland,and the consumption amount of soil water was the highest; therefore,planted shrubland may need to be lumbered to decrease plant number to keep its stability
中文关键词	土壤含水量 ; 土壤深度 ; 林龄
英文关键词	soil water content soil depth stand age
语种	中文
国家	中国
收录类别	CSCD
WOS类目	PLANT SCIENCES
WOS研究方向	Plant Sciences
CSCD记录号	CSCD:4157942
来源机构	中国林业科学研究院荒漠化研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/227500
作者单位	中国林业科学研究院荒漠化研究所, 北京 100091, 中国
推荐引用方式 GB/T 7714	朱雅娟,贾志清,刘丽颖,等. 民勤绿洲外围不同林龄人工梭梭林的土壤水分特征[J]. 中国林业科学研究院荒漠化研究所,2011,31(2):442-446.
APA	朱雅娟,贾志清,刘丽颖,&刘海涛.(2011).民勤绿洲外围不同林龄人工梭梭林的土壤水分特征.中国沙漠,31(2),442-446.
MLA	朱雅娟,et al."民勤绿洲外围不同林龄人工梭梭林的土壤水分特征".中国沙漠 31.2(2011):442-446.