干旱区生态环境知识资源中心(Arid): Aggregated Distribution of Herbaceous Plants in Restored Vegetation Community in a Semi-arid Area: Evidence from the Loess Plateau of China

Arid

DOI	10.1134/S1067413620020058
	Aggregated Distribution of Herbaceous Plants in Restored Vegetation Community in a Semi-arid Area: Evidence from the Loess Plateau of China
	Deng, Jian 1,2; Chong, Yujie 2; Dan, Zhang 2; Kang, Di 3; Han, Xinhui 4; Yang, Gaihe 4
通讯作者	Deng, Jian
来源期刊	RUSSIAN JOURNAL OF ECOLOGY
ISSN	1067-4136
EISSN	1608-3334
出版年	2020
卷号	51 期号:2 页码:136-143
英文摘要	The spatial pattern of herbaceous plants is closely associated with the reestablishment of species diversity as well as other ecological benefits in restored vegetation communities. However, it is still not clear how the distribution of herbaceous understory plants occur after the vegetation restoration. Additionally, the relationship between spatial heterogeneity index and number of herbaceous plants in semi-arid areas are still not well-understood. We selected two types of 35-year-old afforested lands and one type of grassland with areas of 50 x 50 m in Ansai County, Northern Shaanxi, Loess Plateau of China (36 degrees 46 ' 42 ''-36 degrees 46 ' 28 '' N, 109 degrees 13 ' 46 ''-109 degrees 16 ' 03 '' E). Each plot was evenly divided into a total of 100 (5 x 5 m in size) cells. The herbaceous plants in each cell were surveyed in three randomly selected 1 mx1 m S-quadrats. The power law model was used to define the relationship among the variance in the number of plants for species i (v(i)) and the mean total number of plants (m(i)) to reflect the spatial heterogeneity index. Results indicated that the relationship between v(i) and m(i) in afforested land and grassland demonstrated good fit with the power law model (R-2 > 0.85). The spatial heterogeneity indexes of all herbaceous species in the three plots were >0, and the regression lines of the power law model were significantly above the y = x. The species number, Shannon index, and overall spatial heterogeneity indexes of the afforested land were greater than those of the restored grassland. There was a positive correlation between spatial heterogeneity index and mean number of plant individuals. Additionally, there was a negative correlation between overall spatial heterogeneity index and total number of herbaceous plant individuals. These results indicated that afforestation has positive effects on the reestablishment of diversity for herbaceous species. The herbaceous species in afforested land and restored grassland communities exhibited an aggregated distribution in the Loess Plateau.
英文关键词	understory plants afforested land power law model distribution pattern plant individuals spatial heterogeneity index
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000534278400005
WOS关键词	SPATIAL-PATTERN FORMATION ; TREE-GRASS INTERACTIONS ; HETEROGENEITY ; SOIL ; SHRUBLAND ; DENSITY ; DESERT ; GROWTH ; TERM
WOS类目	Ecology
WOS研究方向	Environmental Sciences & Ecology
来源机构	西北农林科技大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/318852
作者单位	1.Yanan Univ, Shaanxi Key Lab Chinese Jujube, Yanan 716000, Peoples R China; 2.Yanan Univ, Coll Life Sci, Yanan 716000, Shaanxi, Peoples R China; 3.China West Normal Univ, Coll Life Sci, Nanchong 637002, Sichuan, Peoples R China; 4.Northwest A&F Univ, Coll Agron, Yangling 712100, Shaanxi, Peoples R China
推荐引用方式 GB/T 7714	Deng, Jian,Chong, Yujie,Dan, Zhang,et al. Aggregated Distribution of Herbaceous Plants in Restored Vegetation Community in a Semi-arid Area: Evidence from the Loess Plateau of China[J]. 西北农林科技大学,2020,51(2):136-143.
APA	Deng, Jian,Chong, Yujie,Dan, Zhang,Kang, Di,Han, Xinhui,&Yang, Gaihe.(2020).Aggregated Distribution of Herbaceous Plants in Restored Vegetation Community in a Semi-arid Area: Evidence from the Loess Plateau of China.RUSSIAN JOURNAL OF ECOLOGY,51(2),136-143.
MLA	Deng, Jian,et al."Aggregated Distribution of Herbaceous Plants in Restored Vegetation Community in a Semi-arid Area: Evidence from the Loess Plateau of China".RUSSIAN JOURNAL OF ECOLOGY 51.2(2020):136-143.