干旱区生态环境知识资源中心(Arid): Switching of dominant positions between two sand-fixing shrub species during the dune revegetation process is underlain by their contrasting xylem hydraulics and water-use strategies

Arid

DOI	10.1002/ldr.3493
	Switching of dominant positions between two sand-fixing shrub species during the dune revegetation process is underlain by their contrasting xylem hydraulics and water-use strategies
	Guo, Jing-Jing 1,2; Gong, Xue-Wei 1,2; Fang, Li-Dong 1,2; Jiang, De-Ming 1; Ala, Musa 1; Bucci, Sandra J.3,4; Scholz, Fabian G.3,4; Goldstein, Guillermo 5,6; Hao, Guang-You 1
通讯作者	Hao, Guang-You
来源期刊	LAND DEGRADATION & DEVELOPMENT
ISSN	1085-3278
EISSN	1099-145X
出版年	2020
卷号	31 期号:10 页码:1195-1205
英文摘要	Differences in key physiological characteristics between plant species can result in their contrasting performances in vegetation restoration projects, but ecophysiological comparative studies in close relation to ecological restoration projects are scarce. Hedysarum fruticosum Pall. and Caragana microphylla Lam. are two leguminous shrub species widely used in combination for fixation of active sand dunes in semiarid regions of northern China, but they clearly differ in fitness at different stages of dune vegetation development; that is, H. fruticosum quickly gains a community dominance at the initial stage but yields to C. microphylla in a few years after the fixation of dunes. To reveal the underlying mechanism of such a pattern, key physiological characteristics related to xylem water transport, leaf water use, and drought tolerance were compared between these two species at a typical site of sand dune fixation project in Inner Mongolia. Compared with C. microphylla, H. fruticosum shows an acquisitive and risky water management strategy with substantially higher hydraulic efficiency and photosynthetic capability but reduced resistance to drought-induced xylem embolism, which endows it an advantage under conditions of relatively high soil water availability at the early stage of dune fixation. In contrast, C. microphylla exhibits more conservative water use and characteristics of greater drought tolerance, which results in greater dominance under the more drought-stressed conditions of the later stage of dune fixation. Our study for the first time provides a potential mechanistic explanation for the clear switching of dominant positions between the two important sand-fixing shrub species during the sand dune revegetation process.
英文关键词	desertification control plant water-use strategy sand dune fixation sand-fixing shrub water relations xylem hydraulics
类型	Article
语种	英语
国家	Peoples R China ; Argentina ; USA
收录类别	SCI-E
WOS记录号	WOS:000510570900001
WOS关键词	COMBATING DESERTIFICATION ; CAVITATION RESISTANCE ; VEGETATION RESTORATION ; PHOTOSYNTHETIC TRAITS ; SOIL PROPERTIES ; WOOD DENSITY ; LEAF ; DROUGHT ; LAND ; VULNERABILITY
WOS类目	Environmental Sciences ; Soil Science
WOS研究方向	Environmental Sciences & Ecology ; Agriculture
EI主题词	2020-02-03
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/312799
作者单位	1.Chinese Acad Sci, Inst Appl Ecol, CAS Key Lab Forest Ecol & Management, Shenyang 110016, Peoples R China; 2.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China; 3.Univ Nacl Patagonia San Juan Bosco, Grp Estudios Biofis & Ecofisiol, Inst Biociencias Patagonia, Consejo Nacl Invest Cient & Tecn, RA-9000 Comodoro Rivadavia, Argentina; 4.Univ Nacl Patagonia San Juan Bosco, Fac Ciencias Nat & Ciencias Salud, RA-9000 Comodoro Rivadavia, Argentina; 5.Univ Miami, Dept Biol, POB 249118, Coral Gables, FL 33124 USA; 6.Univ Buenos Aires, Fac Ciencias Exactas & Nat, Dept Ecol Genet & Evoluc, Ciudad Univ,C1428EGA, Buenos Aires, DF, Argentina
推荐引用方式 GB/T 7714	Guo, Jing-Jing,Gong, Xue-Wei,Fang, Li-Dong,et al. Switching of dominant positions between two sand-fixing shrub species during the dune revegetation process is underlain by their contrasting xylem hydraulics and water-use strategies[J],2020,31(10):1195-1205.
APA	Guo, Jing-Jing.,Gong, Xue-Wei.,Fang, Li-Dong.,Jiang, De-Ming.,Ala, Musa.,...&Hao, Guang-You.(2020).Switching of dominant positions between two sand-fixing shrub species during the dune revegetation process is underlain by their contrasting xylem hydraulics and water-use strategies.LAND DEGRADATION & DEVELOPMENT,31(10),1195-1205.
MLA	Guo, Jing-Jing,et al."Switching of dominant positions between two sand-fixing shrub species during the dune revegetation process is underlain by their contrasting xylem hydraulics and water-use strategies".LAND DEGRADATION & DEVELOPMENT 31.10(2020):1195-1205.