干旱区生态环境知识资源中心(Arid): 民勤荒漠区几种主要植物的相对生态价值

Arid

	民勤荒漠区几种主要植物的相对生态价值
其他题名	Relative ecological values of several major plants in Minqin Desert Area
	常兆丰; 王大为; 段晓峰; 王强强; 张剑挥; 杨敏
来源期刊	干旱区资源与环境
ISSN	1003-7578
出版年	2015
卷号	29 期号:9 页码:86-91
中文摘要	在实际工作中我们注意到,同一盖度的不同植物的固沙效果是大不相同的,而生态服务价值方法和生态位方法都不能解决相同盖度不同植被的生态功能和生态价值问题,那么如何科学确定植物的生态价值呢?文中运用植物冠层分层投影度方法分析了民勤荒漠草地几种主要植物的相对生态价值,结果表明:单位面积的天然白刺和天然麻黄的生态功能大于人工梭梭林,白刺、麻黄和沙蒿的相对生态价值均大于人工梭梭林。用分层投影度能够很好地解释相同盖度的荒漠植被的生态功能和相对生态价值问题。在沙漠地区运用以二维植被盖度计算得的生态功能服务价值和生态位表示荒漠植被的防风固沙功能和作用是不准确的,而应当用三维投影度表示植被的生态功能和相对生态价值。以植物的分层投影度计算荒漠植物(植被)的生态功能和相对生态价值则是文中的创新点。
英文摘要	We noticed that in practical work,sand fixed effects of different plants with the same coverage were very different. And the methods of ecosystem services valuation and the niche could not solve the problems of ecological function and ecological value of different plants with same coverage. This research analyzed the relative ecological values of several major plants in Minqin desert grassland by methods of projection degrees of layered plant crown. The results showed that ecological functions in per unit area of the natural Nitraria tangutorum and natural Ephedra przewalskii were greater than the artificial Haloxylon forest. Relative ecological values of Nitraria tangutorum,Ephedra przewalskii and Artemisia arenaria’s were higher than the artificial Haloxylon forest. Problems of ecological functions and the relative ecological values of same coverage and the desert vegetation can be well explained by the projection degrees layered. It was not accurate using two - dimensional vegetation cover to calculate and valuate the ecosystem services function,niches and the sand - fixing function of desert vegetation in the desert area. Ecological functions and the relative ecological value of vegetation should be represented by the three - dimensional projection degrees. Computing of ecological functions and the relative ecological value with layered projection degrees of the plant is an innovative point of this article.
中文关键词	荒漠草地 ; 分层投影度 ; 生态功能 ; 相对生态价值 ; 民勤县
英文关键词	desert grassland projection degrees layered ecological function relative ecological value Minqin County
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:5513593
来源机构	甘肃省治沙研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/232807
作者单位	甘肃省治沙研究所, 甘肃民勤荒漠草地生态系统国家野外观测研究站, 兰州, 甘肃 730070, 中国
推荐引用方式 GB/T 7714	常兆丰,王大为,段晓峰,等. 民勤荒漠区几种主要植物的相对生态价值[J]. 甘肃省治沙研究所,2015,29(9):86-91.
APA	常兆丰,王大为,段晓峰,王强强,张剑挥,&杨敏.(2015).民勤荒漠区几种主要植物的相对生态价值.干旱区资源与环境,29(9),86-91.
MLA	常兆丰,et al."民勤荒漠区几种主要植物的相对生态价值".干旱区资源与环境 29.9(2015):86-91.