干旱区生态环境知识资源中心(Arid): Abiotic and biotic drivers of species diversity in understory layers of cold temperate coniferous forests in North China

Arid

	Abiotic and biotic drivers of species diversity in understory layers of cold temperate coniferous forests in North China
	Wang Hui; Zhang Mengtao; Nan Hongwei
来源期刊	Journal of Forestry Research
ISSN	1007-662X
出版年	2019
卷号	30 期号:6 页码:2213-2225
英文摘要	Understory plants are important components of forest ecosystems and play a crucial role in regulating community structures, function realization, and community succession. However, little is known about how abiotic and biotic drivers affect the diversity of understory species in cold temperate coniferous forests in the semiarid climate region of North China. We hypothesized that (1) topographic factors are important environmental factors affecting the distribution and variation of understory strata, and (2) different understory strata respond differently to environmental factors; shrubs may be significantly affected by the overstory stratum, and herbs may be more affected by surface soil conditions. To test these hypotheses, we used the boosted regression tree method to analyze abiotic and biotic environmental factors that influence understory species diversity, using data from 280 subplots across 56 sites in cold temperate coniferous forests of North China. Elevation and slope aspect were the dominant and indirect abiotic drivers affecting understory species diversity, and individual tree size inequality (DBH variation) was the dominant biotic driver of understory species diversity; soil water content was the main edaphic factors affecting herb layers. Elevation, slope aspect, and DBH variation accounted for 36.4, 14.5, and 12.1%, respectively, of shrub stratum diversity. Shrub diversity decreased with elevation within the range of altitude of this study, but increased with DBH variation; shrub diversity was highest on north-oriented slopes. The strongest factor affecting herb stratum species diversity was slope aspect, accounting for 25.9% of the diversity, followed by elevation (15.7%), slope (12.2%), and soil water content (10.3%). The highest herb diversity was found on southeast-oriented slopes and the lowest on northeast-oriented slopes; herb diversity decreased with elevation and soil water content, but increased with slope. The results of the study provide a reference for scientific management and biodiversity protection in cold temperate coniferous forests of North China.
英文关键词	Abiotic and biotic drivers Cold temperate coniferous forests North China Semi-arid region Understory species diversity
类型	Article
语种	英语
收录类别	CSCD
WOS研究方向	Forestry
CSCD记录号	CSCD:6610580
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/336209
作者单位	Wang Hui, College of Forestry, Shanxi Agricultural University, Taigu, Shanxi 030801, China.; Zhang Mengtao, College of Forestry, Shanxi Agricultural University, Taigu, Shanxi 030801, China.; Nan Hongwei, College of Forestry, Shanxi Agricultural University, Taigu, Shanxi 030801, China.
推荐引用方式 GB/T 7714	Wang Hui,Zhang Mengtao,Nan Hongwei. Abiotic and biotic drivers of species diversity in understory layers of cold temperate coniferous forests in North China[J],2019,30(6):2213-2225.
APA	Wang Hui,Zhang Mengtao,&Nan Hongwei.(2019).Abiotic and biotic drivers of species diversity in understory layers of cold temperate coniferous forests in North China.Journal of Forestry Research,30(6),2213-2225.
MLA	Wang Hui,et al."Abiotic and biotic drivers of species diversity in understory layers of cold temperate coniferous forests in North China".Journal of Forestry Research 30.6(2019):2213-2225.