Plant coverage is more sensitive than species diversity in indicating the dynamics of the above-ground biomass along a precipitation gradient on the Tibetan Plateau
文献类型：期刊论文
| 作者 | Qin, Xiaojing1,3; Sun, Jian2; Wang, Xiaodan1
|
| 刊名 | ECOLOGICAL INDICATORS
 |
| 出版日期 | 2018 |
| 卷号 | 84页码:507-514 |
| 关键词 | Above-ground biomass Plant coverage Species diversity Community stability Precipitation gradient |
| ISSN号 | 1470-160X |
| DOI | 10.1016/j.ecolind.2017.09.013 |
| 英文摘要 | Species diversity (SD) and total plant coverage (PC) are commonly used predictors of primary productivity (i.e., above ground biomass (ABG)). PC is a characteristic frequently used in remote sensing to assess land cover, land use, and vegetative condition, while species diversity serves as a measure of the existence and utilization of ecological niches. Both SD and PC are thought to be positively related to primary productivity, with SD further contributing to community stability. We investigate the effects of SD and PC on ABG under different mean annual precipitation (MAP) levels. The influences of SD and PC on community stability and biomass allocation were analyzed using redundancy analysis (RDA), correlation analysis (CA), and generalized linear models (GLM). Significantly positive relationships between precipitation and above-ground biomass, species diversity, and plant coverage occurred in the low rainfall gradient (100-400 mm/y) in the alpine steppes, while these relationships appeared in the high rainfall gradient (500-700 mm/y) in alpine meadow ecosystems. Second, we determined that plant coverage (r(2) = 0.88, P < 0.001) provided a better explanation for above-ground biomass than species diversity (r(2) = 0.67, P < 0.001). Moreover, we found that the relationships between SD and AGB and PC and AGB (r(2) = 0.52, P < 0.001, and r(2) = 0.85, P < 0.001, respectively) were more positive in the alpine steppes than in the alpine meadows (r(2) = 0.41, P < 0.001, and r(2) = 0.77, P < 0.001, respectively). Third, at the different precipitation gradients, especially at the 400-500 mm/y and > 600 mm/y ranges, the PC continued to increase, while SD decreased with increasing AGB. Moreover, SD was more sensitive to community stability and reproduction allocation than PC. Overall, plant coverage is better than species diversity in indicating the dynamics of above-ground biomass along a precipitation gradient. |
| 语种 | 英语 |
| WOS记录号 | WOS:000425828200052 |
| 出版者 | ELSEVIER SCIENCE BV |
| 源URL | [http://ir.imde.ac.cn/handle/131551/20681]  |
| 专题 | 成都山地灾害与环境研究所_山地表生过程与生态调控重点实验室 |
| 通讯作者 | Sun, Jian; Wang, Xiaodan |
| 作者单位 | 1.Chinese Acad Sci, Key Lab Mt Surface Proc & Ecol Regulat, Chengdu 640016, Sichuan, Peoples R China 2.Chinese Acad Sci, Synth Res Ctr Chinese Ecosyst Res Network, Key Lab Ecosyst Network Observat & Modelling, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Qin, Xiaojing,Sun, Jian,Wang, Xiaodan. Plant coverage is more sensitive than species diversity in indicating the dynamics of the above-ground biomass along a precipitation gradient on the Tibetan Plateau[J]. ECOLOGICAL INDICATORS,2018,84:507-514. |
| APA | Qin, Xiaojing,Sun, Jian,&Wang, Xiaodan.(2018).Plant coverage is more sensitive than species diversity in indicating the dynamics of the above-ground biomass along a precipitation gradient on the Tibetan Plateau.ECOLOGICAL INDICATORS,84,507-514. |
| MLA | Qin, Xiaojing,et al."Plant coverage is more sensitive than species diversity in indicating the dynamics of the above-ground biomass along a precipitation gradient on the Tibetan Plateau".ECOLOGICAL INDICATORS 84(2018):507-514. |
入库方式： OAI收割
来源：成都山地灾害与环境研究所
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