文献类型：期刊文献

英文题名：Global woodland structure from local interactions: new nearest-neighbour functions for understanding the ontogenesis of global forest structure

作者：Pommerening, Arne[1] Wang, Hongxiang[2] Zhao, Zhonghua[3]

第一作者：Pommerening, Arne

通信作者：Wang, HX[1]

机构：[1]Swedish Univ Agr Sci SLU, Fac Forest Sci, Dept Forest Ecol & Management, Skogsmarksgrand 17, SE-90183 Umea, Sweden;[2]Guangxi Univ, Coll Forestry, Nanning 530004, Peoples R China;[3]Chinese Acad Forestry, Res Inst Forestry, Key Lab Tree Breeding & Cultivat Natl Forestry &, Box 1958, Beijing 100091, Peoples R China

年份：2020

卷号：7

期号：1

外文期刊名：FOREST ECOSYSTEMS

收录：;Scopus(收录号：2-s2.0-85083676116);WOS:【SCI-EXPANDED(收录号:WOS:000526839000001)】；

基金：H. W. was partly supported by the Guangxi Innovation Driven Development Project (No. AA17204087-8). Z.Z. was funded by the National Natural Science Foundation of China (project No. 31670640).

语种：英文

外文关键词：Species segregation function; Size segregation function; Mingling-size hypothesis; Neighbourhood allometric coefficient; random labelling

摘要：Background A number of hypotheses and theories, such as the Janzen-Connell hypothesis, have been proposed to explain the natural maintenance of biodiversity in tropical and temperate forest ecosystems. However, to date the details of the processes behind this natural maintenance are still unclear. Recently two new nearest-neighbour characteristics were proposed and in this paper we demonstrate how they can contribute to a better understanding of the ontogenesis of global forest structure from localised neighbourhoods. Methods We applied the new species and size segregation functions together with appropriate test procedures to four example woodland data sets from China at Daqingshan, Jiaohe, Jiulongshan and Xiaolongshan forest regions. In addition we quantified the morphology of the new characteristics and modelled a neighbourhood allometric coefficient linking the two functions. Results The results revealed quite different species segregation patterns with both conspecific and heterospecific attraction. We found these to be generally matched by equivalent size segregation patterns of attraction of similar and different sizes. It was straightforward to model the size segregation function from the knowledge of the species segregation function by estimating a neighbourhood allometric coefficient. Conclusions The new characteristics have helped to quantify the extent and rate of decline of neighbourhood interactions in terms of spatial species and size diversity. Through the allometric neighbourhood coefficient the analysis highlighted once more how closely related species and size segregation are, thus supporting the mingling-size hypothesis. Using both a traditional and a restricted random-labelling test has provided a valuable tool for understanding the exact nature of species-mingling and size-inequality relationships.