干旱区生态环境知识资源中心(Arid): Response strategies of woody seedlings to shading and watering over time after topsoil translocation in dry-hot karst region of China

Arid

DOI	10.1016/j.foreco.2022.120319
	Response strategies of woody seedlings to shading and watering over time after topsoil translocation in dry-hot karst region of China
	Zhao, Gaojuan; Chen, Fajun; Yuan, Chuang; Yang, Jingya; Shen, Youxin; Zhang, Shiyu; Yang, Jianbo; Ayemele, Aurele Gnetegha; Li, Xiong; Xu, Jianchu
通讯作者	Shen, YX
来源期刊	FOREST ECOLOGY AND MANAGEMENT
ISSN	0378-1127
EISSN	1872-7042
出版年	2022
卷号	519
英文摘要	Translocating topsoil from an appropriate donor forest is a promising strategy to restore seriously degraded sites. However, some dominant or constructive species did not survive due to plant stress in the seedling stage, which ultimately led to a poor community structure and low similarity between new communities and donor forest. In this study, we replaced the topsoil of karst rocky desertification with forest topsoil and imposed different shading and watering treatments following quadratic saturation D-optimum design. Richness, abundance, height and base diameter of woody species (trees + shrubs) were measured yearly to construct mathematical equation between them and shade degrees (SD) and water quantity (WQ) by using multiple stepwise regression. Results displayed a positive linear relationship between richness of woody species and SD at the second year of topsoil translocation, which changed to a parabolic relationship at the fifth year with a maximum 30.8 species when SD was 37.5 %. The positive linear relationship between density of woody species, shrubs and trees and SD at the second year transformed into a parabolic relationship at the fifth year, and density reached maximum 6.3, 3.7 and 3.8 seedlings/m(2) when SD were 41.7, 38.9 and 45.0%, respectively. In contrast, the density of Paliurus orientalis and Sophora viciifolia turned into a negative linear relationship with SD at the fifth year. Moreover, although the effect of SD and WQ on height of woody species increased over time, shading inhibited base diameter of shrubs and height of Quercus cocciferoides, Sapium sebiferum and Fraxinus malacophylla at the fifth year. We concluded that no-shading and heavy shading reduced species diversity, and light to moderate shading should be recommended in first 2-3 years after topsoil translocation to enhance woody species survival and accelerate similar forest community establishment providing guidance for the management, regeneration and restoration of native forest in semi-arid areas.
英文关键词	Topsoil translocation Donor forest Karst rocky desertification Shading and watering Seedling survival Ecological restoration Dry-hot valley
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000832823900003
WOS关键词	ECOLOGICAL RESTORATION ; BIOMASS ALLOCATION ; SOIL TRANSLOCATION ; SEED BANK ; FOREST ; GROWTH ; LIGHT ; DROUGHT ; BIODIVERSITY ; VEGETATION
WOS类目	Forestry
WOS研究方向	Forestry
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/392605
推荐引用方式 GB/T 7714	Zhao, Gaojuan,Chen, Fajun,Yuan, Chuang,et al. Response strategies of woody seedlings to shading and watering over time after topsoil translocation in dry-hot karst region of China[J],2022,519.
APA	Zhao, Gaojuan.,Chen, Fajun.,Yuan, Chuang.,Yang, Jingya.,Shen, Youxin.,...&Xu, Jianchu.(2022).Response strategies of woody seedlings to shading and watering over time after topsoil translocation in dry-hot karst region of China.FOREST ECOLOGY AND MANAGEMENT,519.
MLA	Zhao, Gaojuan,et al."Response strategies of woody seedlings to shading and watering over time after topsoil translocation in dry-hot karst region of China".FOREST ECOLOGY AND MANAGEMENT 519(2022).