气候变化领域集成服务门户(CCPortal): Functional traits indicate a continuum of tree drought strategies across a soil water availability gradient in a tropical dry forest

CCPortal

DOI	10.1016/j.foreco.2020.118740
	Functional traits indicate a continuum of tree drought strategies across a soil water availability gradient in a tropical dry forest
	Chaturvedi R.K.; Tripathi A.; Raghubanshi A.S.; Singh J.S.
发表日期	2020
ISSN	0378-1127
英文摘要	This study evaluates drought survival mechanisms of tropical dry forest (TDF) trees based on their functional traits (FTs). We addressed the following questions: (i) What are the dominant functional guilds (FGs) of tree species across a soil water availability gradient in TDF? (ii) What are the important FTs influencing tree species assemblage in different FGs? (iii) What is the functional composition of different FGs in the study sites, and how are they influencing biomass accumulation capacity (BAC) across the soil water availability gradient? We selected 12 FTs associated with plant water use strategies, viz., canopy cover intensity (CC), wood specific gravity (WSG), saturated stem water content (QWsat), leaf size or leaf area (LA), specific leaf area (SLA), relative water content (RWC), leaf dry matter content (LDMC), leaf nitrogen content (LNC), leaf phosphorus content (LPC), maximum saturated stomatal conductance (Gsmax), maximum saturated photosynthetic rate (Amax), and intrinsic water use efficiency (WUEi). By using these FTs, we classified 47 tree species by HCPC (hierarchical clustering on principal components) into three FGs, viz, drought avoiding (DAFG), drought resistant (DRFG), and drought tolerant (DTFG). For species grouping, QWsat was the most significant for DAFG, impacts of Amax, LPC, Gsmax and LNC were significant for DRFG, while LDMC and CC were significant for DTFG. Across the five forest fragments, along a soil moisture content (SMC) gradient, the three FGs exhibited significant differences in species richness, stem density, aboveground biomass, and biomass accumulation capacity (BAC). We observed increasing dominance of DAFG towards drier sites, while the abundance of DRFG and DTFG was higher towards moister sites. Among the three FGs, DTFG showed highest biomass and BAC in our study region. Strategies of DAFG were more associated with savanna habitats, while DRFG and DTFG exhibited strategies important for TDFs. Our findings could help forest managers in restoration and conservation of TDFs. © 2020 Elsevier B.V.
英文关键词	Drought avoidance; Drought resistance; Drought tolerance; Functional guilds; Soil moisture content; Tropical dry forest
语种	英语
scopus关键词	Biomass; Conservation; Drought; Gravitation; Hierarchical clustering; Plants (botany); Soil moisture; Tropics; Biomass accumulation; Functional compositions; Intrinsic water-use efficiencies; Leaf nitrogen content; Principal Components; Relative water content; Soil water availability; Wood specific gravities; Forestry
来源期刊	Forest Ecology and Management
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/155650
作者单位	Center for Integrative Conservation, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Menglun, Yunnan 666303, China; National Mineral Development Corporation Limited, Bailadila Iron Ore Mine, Bacheli Complex, Dantewada, Chhattisgarh 494553, India; Institute of Environment and Sustainable Development, Banaras Hindu University, Varanasi, Uttar Pradesh 221005, India; Ecosystems Analysis Laboratory, Department of Botany, Banaras Hindu University, Varanasi, Uttar Pradesh 221005, India
推荐引用方式 GB/T 7714	Chaturvedi R.K.,Tripathi A.,Raghubanshi A.S.,et al. Functional traits indicate a continuum of tree drought strategies across a soil water availability gradient in a tropical dry forest[J],2020.
APA	Chaturvedi R.K.,Tripathi A.,Raghubanshi A.S.,&Singh J.S..(2020).Functional traits indicate a continuum of tree drought strategies across a soil water availability gradient in a tropical dry forest.Forest Ecology and Management.
MLA	Chaturvedi R.K.,et al."Functional traits indicate a continuum of tree drought strategies across a soil water availability gradient in a tropical dry forest".Forest Ecology and Management (2020).