文献类型：期刊文献

英文题名：Grazing plays an important role in structuring alpha and beta components of taxonomic, functional, and phylogenetic diversity in semiarid sandy land of northern China

作者：Wang, Yin[1] Wang, Jianming[1,2] Chen, Chen[1] Li, Jingwen[1] Chu, Jianmin[3]

第一作者：Wang, Yin

通信作者：Li, JW[1]

机构：[1]Beijing Forestry Univ, Coll Forestry, 35 Qinghua East Rd, Beijing 100083, Peoples R China;[2]Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, 11 Datun Rd, Beijing, Peoples R China;[3]Chinese Acad Forestry, Res Inst Forestry, Key Lab Tree Breeding & Cultivat, State Forestry Adm, Beijing 100091, Peoples R China

年份：2019

卷号：20

外文期刊名：GLOBAL ECOLOGY AND CONSERVATION

收录：;Scopus(收录号：2-s2.0-85072304908);WOS:【SCI-EXPANDED(收录号:WOS:000498226800084)】；

基金：JianmingWang, Jingwen Li, Chen Chen and Jianmin Chu commented on a previous version of the manuscript. The authors would be grateful to Chinese Academy of Sciences (RESDC) (http://www.resdc.cn)for providing the vegetation dataset. This work was supported by grants from Investigation in the major desert plant communities in China, National Basic Resources Survey Special Program of China (item identification number: 2017FY100205).

语种：英文

外文关键词：Alpha diversity; Beta diversity; Grazing disturbance; Horqin sandy land

摘要：Horqin Sandy Land is located in the semiarid farming-pastoral ecotone of China, with a long-term history of uncontrolled livestock grazing. However, the relative effects of grazing, environmental and spatial factors on taxonomic, functional, and phylogenetic diversity has not been explored simultaneously. To test the relative importance of grazing, environmental and spatial factors in shaping alpha and beta components of taxonomic, functional, and phylogenetic diversity in semiarid sandy land, a large-scale field survey was carried out from 141 plots at 41 sites across Horqin Sandy Land. Results showed that grazing, environmental and spatial factors affected three facets of diversity in different ways at both alpha and beta scales. Taxonomic, functional, and phylogenetic diversity was shaped by environmental factors at the alpha scale, whereas phylogenetic diversity was correlated with spatial factors at the beta scale. Interestingly, beta taxonomic diversity was determined by spatially structured environmental factors and beta functional diversity was determined by environmental factors. Results showed that the ecological drivers of biodiversity may vary according to different facets and scales. Meanwhile, we also found that grazing plays an important role in structuring biodiversity in semiarid sandy land. Grazing disturbance explained more variation at the alpha scale than at the beta scale. Furthermore, the joint effect of grazing disturbance and soil fertility played an important role in shaping alpha diversity. It is worth noting that all three facets of diversity were reduced by increasing grazing intensity or decreasing soil fertility. Our results highlight that correctly managing grazing locally and unfertile site can decrease the effects of disturbance on biodiversity patterns in semiarid ecosystems. Future research should focus on taxonomic, functional, and phylogenetic diversity at various scales to determine biodiversity conservation strategies. (c) 2019 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).