干旱区生态环境知识资源中心(Arid): Drought-Induced Reductions and Limited Recovery in the Radial Growth, Transpiration, and Canopy Stomatal Conductance of Mongolian Scots Pine (Pinus sylvestris var. mongolica Litv): A Five-Year Observation

Arid

DOI	10.3390/f10121143
	Drought-Induced Reductions and Limited Recovery in the Radial Growth, Transpiration, and Canopy Stomatal Conductance of Mongolian Scots Pine (Pinus sylvestris var. mongolica Litv): A Five-Year Observation
	Dang, Hongzhong 1; Lu, Ping 2; Yang, Wenbin 1; Han, Hui 3; Zhang, Jun 4
通讯作者	Dang, Hongzhong
来源期刊	FORESTS
EISSN	1999-4907
出版年	2019
卷号	10 期号:12
英文摘要	Determining plant-water relationships in response to drought events can provide important information about the adaptation of trees to climate change. The Mongolian Scots pine (Pinus sylvestris var. mongolica Litv), as one of the major tree species to control soil loss and desertification in northern China, has experienced severe degradation in recent decades. Here, we aimed to examine the impacts of a two-year consecutive drought and another year of drought on the radial growth, transpiration, and canopy stomatal conductance of Mongolian Scots pine over a five-year period, especially in terms of its recovery after drought. The study period during 2013-2017 consisted of a 'normal' year, a 'dry year', a 'very dry' year, a 'wet' year, and a 'dry' year, according to annual precipitation and soil moisture conditions. Based on measurements of the sap flow and diameters at breast height of 11 sample trees as well as the concurrent environmental factors, we quantified the reductions in tree radial growth, transpiration, and canopy stomatal conductance during the drought development as well as their recovery after the drought. The results showed that the tree radial growth, transpiration, and canopy stomatal conductance of Mongolian Scots pines decreased by 33.8%, 51.9%, and 51.5%, respectively, due to the two consecutive years of drought. Moreover, these reductions did not fully recover after the two-year drought was relieved. The minimum difference of these parameters between before and after the two-year consecutive drought period was 8.5% in tree radial growth, 45.1% in transpiration levels, and 42.4% in canopy stomatal conductance. We concluded that the two consecutive years of drought resulted in not only large reductions in tree radial growth and water use, but also their lagged and limited recoveries after drought. The study also highlighted the limited resilience of Mongolian Scots pine trees to prolonged drought in semi-arid sandy environmental conditions.
英文关键词	sap flow canopy stomatal conductance groundwater table Mongolian Scots pine drought resilience
类型	Article
语种	英语
国家	Peoples R China ; Australia
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000507288400065
WOS关键词	SEMIARID SANDY REGION ; SPARSE WOOD GRASSLAND ; SAP FLOW ; WATER-USE ; TREE MORTALITY ; HYDRAULIC CONDUCTANCE ; CLIMATE-CHANGE ; HEAT-WAVE ; STAND ; RESILIENCE
WOS类目	Forestry
WOS研究方向	Forestry
EI主题词	2019-12-01
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/311177
作者单位	1.Chinese Acad Forestry, Inst Desertificat Studies, Beijing 100091, Peoples R China; 2.Charles Darwin Univ, Res Inst Environm & Livelihoods, Darwin, NT 0810, Australia; 3.Inst Sand Fixat & Afforestat Liaoning Prov, Fuxing 123000, Peoples R China; 4.Northeast Forestry Univ, Coll Forestry, Harbin 150040, Peoples R China
推荐引用方式 GB/T 7714	Dang, Hongzhong,Lu, Ping,Yang, Wenbin,et al. Drought-Induced Reductions and Limited Recovery in the Radial Growth, Transpiration, and Canopy Stomatal Conductance of Mongolian Scots Pine (Pinus sylvestris var. mongolica Litv): A Five-Year Observation[J],2019,10(12).
APA	Dang, Hongzhong,Lu, Ping,Yang, Wenbin,Han, Hui,&Zhang, Jun.(2019).Drought-Induced Reductions and Limited Recovery in the Radial Growth, Transpiration, and Canopy Stomatal Conductance of Mongolian Scots Pine (Pinus sylvestris var. mongolica Litv): A Five-Year Observation.FORESTS,10(12).
MLA	Dang, Hongzhong,et al."Drought-Induced Reductions and Limited Recovery in the Radial Growth, Transpiration, and Canopy Stomatal Conductance of Mongolian Scots Pine (Pinus sylvestris var. mongolica Litv): A Five-Year Observation".FORESTS 10.12(2019).