干旱区生态环境知识资源中心(Arid): Distribution patterns of planted-shrubs of different restoration ages in artificial sand-fixing regions in the southeastern Tengger Desert

Arid

	Distribution patterns of planted-shrubs of different restoration ages in artificial sand-fixing regions in the southeastern Tengger Desert
	Liu Meiling; Chen Ning; Zhu Ruiqing
来源期刊	寒旱区科学
ISSN	1674-3822
出版年	2020
卷号	12 期号:2
英文摘要	Plant density and spatial distribution in artificial vegetation is obviously initialized at the planting stage. Plant dynamics and spatial pattern may change over time as the result of interactions between individual plants and habitats, but whether it's applied for desert shrubs in artificial sand-fixing regions remains unknown. Here we examined changes in plant density and distribution patterns of three shrubs (Artemisia ordosica Krasch, Caragana korshinskii Kom, and Hedysarum scoparium Fisch.) in different regions, which have been restored for 27, 32 and 50 years (R27, R32, R50), respectively. The vegetation analysis shows that A. ordosica was the dominated species across the 3 restoration regions. The density of A. ordosica and H. scoparium show a significant increase from R27 to R32, then decreased in R50. The density of C. korshinskii was low in R32 and R50, lower in R27. The variance-to-mean ratio (VMR) was used to characterize spatial distribution patterns to fit the observed densities of the three shrubs by frequency. A. ordosica and C. korshinskii both show significantly clumped distributions in three restoration regions. H. scoparium show a uniform distribution in R27 and R50, but a clumped distribution in R32. These results show that A. ordosica seems to be more adaptable in revegetated desert areas compared to C. korshinskii and H. scoparium. Pattern analysis suggests a successive replacement of C. korshinskii, which had low proportions of survived shrubs, by the dominant A. ordosica. This study contributes to the understanding of the distribution patterns of shrubs plants in revegetation projects in arid desert areas.
英文关键词	restoration shrubs density spatial pattern
类型	Article
语种	英语
收录类别	CSCD
WOS类目	Plant Sciences
CSCD记录号	CSCD:6823219
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/353602
推荐引用方式 GB/T 7714	Liu Meiling,Chen Ning,Zhu Ruiqing. Distribution patterns of planted-shrubs of different restoration ages in artificial sand-fixing regions in the southeastern Tengger Desert[J],2020,12(2).
APA	Liu Meiling,Chen Ning,&Zhu Ruiqing.(2020).Distribution patterns of planted-shrubs of different restoration ages in artificial sand-fixing regions in the southeastern Tengger Desert.寒旱区科学,12(2).
MLA	Liu Meiling,et al."Distribution patterns of planted-shrubs of different restoration ages in artificial sand-fixing regions in the southeastern Tengger Desert".寒旱区科学 12.2(2020).