干旱区生态环境知识资源中心(Arid): 子午岭植被自然恢复过程中植物多样性的变化

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	子午岭植被自然恢复过程中植物多样性的变化
其他题名	The change of plant diversity during natural recovery process of vegetation in Ziwuling area
	李裕元; 邵明安
来源期刊	生态学报
ISSN	1000-0933
出版年	2004
卷号	24 期号:2 页码:252-260
中文摘要	黄土高原地区由于强烈的水土流失生态系统处于极度退化的状态，探讨该地区植被自然恢复演替过程中植物多样性的变化规律，对于指导该地区的人工植被建设具有重要的理论价值与实际意义。以时空互代的方法初步研究了黄土高原子午岭弃耕地植被自然恢复演替过程中植物多样性的变化。结果表明，在近150a的植被恢复演替过程中调查样方内共出现高等植物128种，分属于47科113属，累计出现的科、属、种数(y)随着演替时间(t)的延长呈对数函数变化：y-aim(幻+6，而且在植被恢复的前期增加速度较快，有60％的科属种在前30a出现。杠柳(Periploca seplum)与茶条槭(Acer ginnala)是植被恢复演替过程中出现最早而且持续时间最长的木本植物，具有较宽的生态位，建议作为该地区人工造林树种考虑。在植被恢复演替过程中草本层与灌木层物种丰富度指数(Gleason指数与Margalef指数)、多样性指数(Shannon-Wiener指数)以及Pielou均匀度指数的变化均表现为抛物线函数变化规律：y-at~2+bt+c。在不同的群落层次植物多样性的变化是不同步的，草本层、灌木层与乔木层植物多样性达到最大的时间依次为70～80a、90～lOOa与100a以上。森林群落植物多样性在空间上的变化顺序为：草本层>灌木层>乔木层。
英文摘要	Due to serious soil and water loss, the ecosystem on the Loess Plateau is in a seriously degraded status. Discussion about the tendency of plant diversity change during the natural recovery process of vegetation in the studied area is very important both in theory and in practice. The studied area is located at Ziwuling in Fuxian county, Shaanxi province, China, at 109°ll’E and 36°05’N. The climate is semi-arid in warm temperate zone with mean annual precipitation of 576. 7mm and mean temperature of 9 C. It is in the north border of deciduous broad forest belt. In order to investigate the change of plant diversity during natural succession processes, ten sampling sites with similar physical conditions but different succession ages were selected and standard methods were applied for field survey and data analysis. Results showed that 128 plant species, which belonged to 47 families and 113 genera, appeared in the inventoried quadrats during the recovery process in nearly 150a. About 50% of the total species are Leguminocae, Gramineae, Compositae and Rosaceae, that suggested plants in four big families playing important roles in natural vegetation recovery. The accumulated number (y) of family, genus, and species in successional process varied logarithmically with the time t (a): y = a
国家	中国
收录类别	CSCD
CSCD记录号	CSCD:1630904
来源机构	中国科学院地理科学与资源研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/205339
作者单位	中国科学院地理科学与资源研究所, 北京 100101, 中国
推荐引用方式 GB/T 7714	李裕元,邵明安. 子午岭植被自然恢复过程中植物多样性的变化[J]. 中国科学院地理科学与资源研究所,2004,24(2):252-260.
APA	李裕元,&邵明安.(2004).子午岭植被自然恢复过程中植物多样性的变化.生态学报,24(2),252-260.
MLA	李裕元,et al."子午岭植被自然恢复过程中植物多样性的变化".生态学报 24.2(2004):252-260.