干旱区生态环境知识资源中心(Arid): Factors limiting the recruitment of artificial black locust forests in extremely arid environment

Arid

DOI	10.1016/j.ecoleng.2020.105813
	Factors limiting the recruitment of artificial black locust forests in extremely arid environment
	Kang, Di; Zou, Shuzhen
通讯作者	Zou, SZ
来源期刊	ECOLOGICAL ENGINEERING
ISSN	0925-8574
EISSN	1872-6992
出版年	2020
卷号	150
英文摘要	Afforestation is a common ecological practice for solving drought issues. However, unclear regeneration mechanisms in the context of drought jeopardize artificial forests. Sexual and asexual reproduction (seeds, seedlings and resprouts) in an artificial black locust forest on the Loess Plateau of China (LPC) were investigated to better understand the recruitment limitations of artificial forests in an extremely arid environment. This study found that the thousand kernel weight of black locust was 16.97 g (+/- 1.19) on the LPC, which was lighter than that reported in other regions. The proportion of undamaged seeds on the trees was 83.56% (+/- 6.29), although this value reduced to 17.47% (3.48) when the seeds fell to the litter layer and ground surface. The germination rate of undamaged seeds in the laboratory environment was 79.66% (+/- 12.61) on average. Thus, a low seed weight will not reduce the germination rate in suitable environments but will most likely lead to reduce the ability of keeping health after the seeds drop to the litter layer. The reproduction of artificial black locust forests in the extremely arid environment was also low, with 467.86 individuals/ha on average. The quantity of sprouts of a larger size was more than that of seedlings. The results further indicated that reproduction was affected by deficiencies in water and available nutrients and competition for resources from aboveground vegetation. The disturbance intensity was good for resprouts. Seedlings and resprouts self-clumped at scales of 1-7 m and 0-4.5 m, respectively. Seedling recruitment declined near adult trees, while resprouts survived better near adult trees. We suggest that drought- and low nutrient-resistant cultivars and planting on gentle slopes should be implemented to improve recruitment in the studied forest. Moreover, asexual reproduction may be improved via forest management.
英文关键词	Black locust Recruitment Artificial forest Arid environment Reproduction
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000529350200005
WOS关键词	ROBINIA-PSEUDOACACIA L. ; SEEDLING GROWTH ; WATER-CONTENT ; SOIL-WATER ; PLATYCLADUS-ORIENTALIS ; LITTER DECOMPOSITION ; NITROGEN-FIXATION ; CARBON ALLOCATION ; GERMINATION ; TEMPERATURE
WOS类目	Ecology ; Engineering, Environmental ; Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology ; Engineering
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/324377
作者单位	[Kang, Di; Zou, Shuzhen] China West Normal Univ, Key Lab Southwest China Wildlife Resources Conser, Minist Educ, Nanchong, Sichuan, Peoples R China; [Kang, Di; Zou, Shuzhen] Res Ctr Recycle Agr Engn & Technol Shaanxi Prov, Yangling, Shaanxi, Peoples R China
推荐引用方式 GB/T 7714	Kang, Di,Zou, Shuzhen. Factors limiting the recruitment of artificial black locust forests in extremely arid environment[J],2020,150.
APA	Kang, Di,&Zou, Shuzhen.(2020).Factors limiting the recruitment of artificial black locust forests in extremely arid environment.ECOLOGICAL ENGINEERING,150.
MLA	Kang, Di,et al."Factors limiting the recruitment of artificial black locust forests in extremely arid environment".ECOLOGICAL ENGINEERING 150(2020).