DOI: 10.1016/j.foreco.2013.02.009
Scopus记录号: 2-s2.0-84875251576
论文题名: Growth patterns and genetic structure of Populus euphratica Oliv. (Salicaceae) forests in NW China - Implications for conservation and management
作者: Eusemann P. ; Petzold A. ; Thevs N. ; Schnittler M.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2013
卷: 297 起始页码: 27
结束页码: 36
语种: 英语
英文关键词: Clonal propagation
; Floodplain forests
; Genetic diversity
; Microsatellites
; Population structure
; Riparian ecosystems
Scopus关键词: Clonal propagation
; Floodplain forest
; Genetic diversity
; Microsatellites
; Population structures
; Riparian ecosystem
; Biodiversity
; Cloning
; DNA sequences
; Groundwater
; Plants (botany)
; Rivers
; Water supply
; Forestry
; clonal growth
; clone
; conservation genetics
; conservation management
; deciduous forest
; gene flow
; genetic differentiation
; genetic marker
; genetic structure
; growth rate
; hydrodynamics
; riparian forest
; survival
; water depth
; Biodiversity
; Clones
; Ecosystems
; Forests
; Genetic Engineering
; Ground Water
; Nucleic Acids
; Water Supply
; China
; Tarim River
; Xinjiang Uygur
英文摘要: To investigate the influence of groundwater and river dynamics on genetic diversity and clonal growth of Populus euphratica forests along the Tarim river system (Xinjiang Prov., China), we genotyped nine old stands in three study areas of various distance to the main river. Using seven microsatellite loci, 850 genotypes were found among 1701 analyzed trees, with 204 of these comprising at least two trees. Population genetic analyses revealed a low degree of genetic differentiation (Dest=0.014, Gst=0.005), and no restriction to gene flow between stands. The forests can therefore be described by the infinite island model of gene flow. Stands in the three study areas differed strongly in clonality: in area I 82% of all trees grew from root suckers, clones averagely comprised 10.5±2.0 trees; figures in area II were 45% and clones of 4.5±1.0 trees, respectively. Area III had the largest trees, but was almost non-clonal (less than 3% of all trees were root suckers). By measuring current ground water depth and reconstructing river courses over more than one century, the varying ground water supply was identified as the most likely reason for the different degree of clonal growth. Neither survival nor lifespan of a stand depends on clonal growth. In the harsh environments inhabited by P. euphratica, the most important function of clonal growth may be the enhanced reproductive impact of large clones. © 2013 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/66638
Appears in Collections: 影响、适应和脆弱性
There are no files associated with this item.
作者单位: Ernst-Moritz-Arndt University Greifswald, Department of Botany and Landscape Ecology, Grimmer Str. 88, 17487 Greifswald, Germany
Recommended Citation:
Eusemann P.,Petzold A.,Thevs N.,et al. Growth patterns and genetic structure of Populus euphratica Oliv. (Salicaceae) forests in NW China - Implications for conservation and management[J]. Forest Ecology and Management,2013-01-01,297