干旱区生态环境知识资源中心(Arid): 金沙江干热河谷人工植被土壤水环境

Arid

	金沙江干热河谷人工植被土壤水环境
其他题名	Soil water environment of artificial vegetation in Jinshajiang dry-hot volley
	王克勤; 沈有信; 陈奇伯; 王震洪
来源期刊	应用生态学报
ISSN	1001-9332
出版年	2004
卷号	15 期号:5 页码:809-813
中文摘要	金沙江干热河谷异常干热的气候特点,普遍存在水分亏缺问题,人工植被土壤水环境问题比其它干旱、半干旱地区更加突出.在干热河谷典型地段--元谋的试验观测表明,现有的乔木林明显表现出"土壤干化"的特点,土壤水分持续长时间亏缺,雨季结束之后的11月份,2m土层内的土壤含水量只有15%(相当于田间持水量的35%)左右,之后持续下降,直到5月份达到最低点(9%左右),几乎接近林木的凋萎湿度(元谋表蚀燥红壤的凋萎湿度为9.0%).由此而导致林木生长缓慢.车桑子(Radonaeawiscosa)灌木林同层土壤含水率相对比乔木林高42.68%,自然草坡的土壤水分明显优于乔木和灌木林,分别比乔木林和灌木林高34.36%和22.22%.这种人工乔木林的"土壤干化"问题在干热河谷地区的植被恢复中还没有引起重视,将极大地制约人工植被的可持续发展.
英文摘要	Jinshajiang dry-hot volley has the characteristics of extremely hot and dry climate due to its specific local climate, where universally exists moisture deficit and the problem of soil water environment of artificial vegetation be-comes more serious than other arid and semi-arid areas. The environmental determination in the typical sector of dry-hot volley Yuanmou showed that the existed arboreous forests evidently showed the characteristics of soil drying. Soil was short of moisture for a long term. In November after the rain season was over, soil water content in two-meter-deep soil layer was only 15 % (equal to 35% of field capacity). Later on, soil water content contin-ued decreasing and reached the lowest point in May (9%), which was near to wilting moisture of trees (the wilt-ing moisture of surface eroded dry red soil of Yuanmou was 9.0 %). As a result, trees grew slowly. As for Radonaea xviscosa shrubbery, its soil water content at the same layer was relatively 42.68 % higher than that of arbore-ous trees. The soil moisture of natural grass slope was evidently better than that of arboreous trees and shrubbery, and was 34.36% and 22.22% higher, respectively. This kind of soil drying problem didn’t come into notice in the vegetation restoration of Jinshajiang dry-hot volley, which would greatly restrict the sustainable development of artificial vegetation.
中文关键词	干热河谷 ; 人工植被 ; 土壤水环境
英文关键词	Dry-hot volley Artificial vegetation Soil water environment
类型	Article
语种	中文
国家	中国
收录类别	CSCD
WOS类目	Agriculture
WOS研究方向	Agriculture
CSCD记录号	CSCD:1585989
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/205623
作者单位	王克勤, 中国科学院西双版纳热带植物园, 昆明, 云南 650223, 中国.; 沈有信, 中国科学院西双版纳热带植物园, 昆明, 云南 650223, 中国.; 陈奇伯, 西南林学院, 昆明, 云南 650224, 中国.; 王震洪, 西南林学院, 昆明, 云南 650224, 中国.
推荐引用方式 GB/T 7714	王克勤,沈有信,陈奇伯,等. 金沙江干热河谷人工植被土壤水环境[J],2004,15(5):809-813.
APA	王克勤,沈有信,陈奇伯,&王震洪.(2004).金沙江干热河谷人工植被土壤水环境.应用生态学报,15(5),809-813.
MLA	王克勤,et al."金沙江干热河谷人工植被土壤水环境".应用生态学报 15.5(2004):809-813.