干旱区生态环境知识资源中心(Arid): The effects of land degradation on plant community assembly: Implications for the restoration of the Tibetan Plateau

Arid

DOI	10.1002/ldr.3613
	The effects of land degradation on plant community assembly: Implications for the restoration of the Tibetan Plateau
	Luo, Jiufu; Ma, Li; Li, Guijing; Deng, Dongzhou; Chen, Dechao; Zhang, Li; Zhu, Xinwei; Zhou, Jinxing
通讯作者	Zhou, JX
来源期刊	LAND DEGRADATION & DEVELOPMENT
ISSN	1085-3278
EISSN	1099-145X
出版年	2020
卷号	31 期号:18 页码:2819-2829
英文摘要	Understanding how biotic and abiotic filters drive plant distributions is critical for informing restoration efforts of degraded lands. However, it remains unclear whether or not it is possible to develop efficient restoration strategies that are based on field investigations? Here, we conducted a field-based investigation along a land degradation gradient on the Tibetan Plateau. Along this gradient, we compared species composition, Pianka's niche overlap, and total aboveground biomass among grasses, sedges, legumes, and forbs. We also used Faith's (1992) phylogenetic diversity index (PD) and the net relatedness index (NRI) to measure community phylogenetic patterns. To understand the effects of abiotic filtering, we measured soil pH, moisture, electrical conductivity, total soil organic carbon, microbial biomass carbon, and microbial biomass nitrogen. Our results show that grasses replaced sedges and mesoxerophytes replaced mesohydrophytes with increasing land degradation. We also found that niche overlap declined with increasing degradation intensity. Furthermore, grass biomass increased, while sedges and legumes decreased, and forb biomass showed a hump-shaped relationship with degradation intensity. In addition, the communities transitioned from a clustered to a more random phylogenetic pattern. Soil conditions changed from acidic to alkaline and from fertile to harsh (p < .05). High niche overlap indicates a high biotic filtering at lightly degraded land where abiotic filtering is less stressful. However, when degradation is intense, abiotic filtering is apparent, as indicated by low levels of niche overlap. Overall, we suggest that distantly related, arid tolerant and hardy plants, and soil reclamation should be considered in degraded alpine lands restoration.
英文关键词	community assembly harsh soil phylogenetic structure restoration tactics species niche
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000544420800001
WOS关键词	PHYLOGENETIC DIVERSITY ; WOODY-PLANTS ; QINGHAI ; COMPETITION ; SUCCESSION ; GRASSLAND ; PATTERNS ; TREE ; DESERTIFICATION ; FACILITATION
WOS类目	Environmental Sciences ; Soil Science
WOS研究方向	Environmental Sciences & Ecology ; Agriculture
来源机构	北京林业大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/324878
作者单位	[Luo, Jiufu; Ma, Li; Li, Guijing; Zhou, Jinxing] Beijing Forestry Univ, Key Lab State Forestry Adm Soil & Water Conservat, Beijing 100083, Peoples R China; [Luo, Jiufu; Li, Guijing; Zhou, Jinxing] Beijing Forestry Univ, Jianshui Res Field Stn, Beijing, Peoples R China; [Deng, Dongzhou; Chen, Dechao] Sichuan Acad Forestry Sci, Chengdu, Peoples R China; [Zhang, Li; Zhu, Xinwei] Aba Prefecture Inst Forestry & Grassland Sci & Te, Wenchuan, Peoples R China
推荐引用方式 GB/T 7714	Luo, Jiufu,Ma, Li,Li, Guijing,et al. The effects of land degradation on plant community assembly: Implications for the restoration of the Tibetan Plateau[J]. 北京林业大学,2020,31(18):2819-2829.
APA	Luo, Jiufu.,Ma, Li.,Li, Guijing.,Deng, Dongzhou.,Chen, Dechao.,...&Zhou, Jinxing.(2020).The effects of land degradation on plant community assembly: Implications for the restoration of the Tibetan Plateau.LAND DEGRADATION & DEVELOPMENT,31(18),2819-2829.
MLA	Luo, Jiufu,et al."The effects of land degradation on plant community assembly: Implications for the restoration of the Tibetan Plateau".LAND DEGRADATION & DEVELOPMENT 31.18(2020):2819-2829.