干旱区生态环境知识资源中心(Arid): Comparison of transpiration between different aged black locust (Robinia pseudoacacia) trees on the semi-arid Loess Plateau, China

Arid

	Comparison of transpiration between different aged black locust (Robinia pseudoacacia) trees on the semi-arid Loess Plateau, China
	Jiao Lei; Lu Nan; Fu Bojie; Gao Guangyao; Wang Shuai; Jin Tiantian; Zhang Liwei; Liu Jianbo; Zhang Di
来源期刊	Journal of Arid Land
ISSN	1674-6767
出版年	2016
卷号	8 期号:4 页码:604-617
英文摘要	Black locust (Robinia pseudoacacia) is widely planted throughout the semi-arid Loess Plateau of China. The spatial distribution of this species at different ages is highly heterogeneous due to restoration and management practices. In this study, we aimed to compare the transpiration levels between different aged black locusts at the tree and stand scales, clarifying the physiological status of this species with different ages. Black locust trees with two representative age classes (12 and 28 years) were selected in the Yangjuangou catchment on the semi-arid Loess Plateau. Sap flux density (F_d) and environmental variables (solar radiation, air temperature, relative humidity and soil water content) were simultaneously monitored throughout the growing season of 2014. Tree transpiration (E_t) was the product of F_d and sapwood area (A_S), and stand transpiration (E_c) was calculated basing on the stand sap flux density (J_s) and stand total sapwood area (A_(ST)). Stomatal conductance (g_s) was measured in a controlled environment and hydraulic conductance was estimated using the relationship between transpiration rate and vapor pressure deficit (VPD). Our results showed that E_t and E_c were higher in the 28-year-old stand than in the 12-year-old stand. The g_s and hydraulic conductance of 28-year-old trees were also higher than those of 12-year-old trees, and the two parameters were thus the causes of variations in transpiration between different age classes. After rainfall, mean F_d increased by 9% in 28-year-old trees and by 5% in 12-year-old trees. This study thus suggests that stand age should be considered for estimating transpiration at the catchment and region scales in this area. These results provide ecophysiological evidences that the older black locust trees had more active physiological status than the younger ones in this area. These findings also provide basic information for the management of water resources and forests on the semi-arid Loess Plateau.
英文关键词	sapflow transpiration stand age afforestation restoration Loess Plateau
类型	Article
语种	英语
开放获取类型	Bronze
收录类别	CSCD
WOS研究方向	Forestry
CSCD记录号	CSCD:5722411
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/335663
作者单位	Jiao Lei, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, State Key Laboratory of Urban and Regional Ecology, Beijing 100085, China.; Lu Nan, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, State Key Laboratory of Urban and Regional Ecology, Beijing 100085, China.; Fu Bojie, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, State Key Laboratory of Urban and Regional Ecology, Beijing 100085, China.; Gao Guangyao, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, State Key Laboratory of Urban and Regional Ecology, Beijing 100085, China.; Wang Shuai, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, State Key Laboratory of Urban and Regional Ecology, Beijing 100085, China.; Liu Jianbo, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, State Key Laboratory of Urban and Regional Ecology, Beijing 100085, China.; Jin Tiantian, China Institute of Wat...
推荐引用方式 GB/T 7714	Jiao Lei,Lu Nan,Fu Bojie,et al. Comparison of transpiration between different aged black locust (Robinia pseudoacacia) trees on the semi-arid Loess Plateau, China[J],2016,8(4):604-617.
APA	Jiao Lei.,Lu Nan.,Fu Bojie.,Gao Guangyao.,Wang Shuai.,...&Zhang Di.(2016).Comparison of transpiration between different aged black locust (Robinia pseudoacacia) trees on the semi-arid Loess Plateau, China.Journal of Arid Land,8(4),604-617.
MLA	Jiao Lei,et al."Comparison of transpiration between different aged black locust (Robinia pseudoacacia) trees on the semi-arid Loess Plateau, China".Journal of Arid Land 8.4(2016):604-617.