Effects of climatic and grazing changes on desertification of alpine grasslands, Northern Tibet
文献类型：期刊论文
| 作者 | Sun, Jian2,3,4; Hou, Ge2; Liu, Miao2; Fu, Gang2; Zhan, TianYu5; Zhou, Huakun6; Tsunekawa, Atsushi1; Haregeweyn, Nigussie7 |
| 刊名 | ECOLOGICAL INDICATORS
 |
| 出版日期 | 2019-12-01 |
| 卷号 | 107页码:9 |
| 关键词 | Normalized difference vegetation index (NDVI) Landscape index Climate change Grazing Desertification Alpine grassland |
| ISSN号 | 1470-160X |
| DOI | 10.1016/j.ecolind.2019.105647 |
| 通讯作者 | Sun, Jian(sunjian@igsnrr.ac.cn) |
| 英文摘要 | Alpine grasslands influence global climatic change and local economy in Northern Tibet. There is some debate about whether the grassland desertification is related to climate or grazing. Here, we employed vegetation coverage normalized difference vegetation index (NDVI) and landscape indexes to investigate the grassland desertification conditions and its impacts. We also linked these indexes to changes in climate and grazing to explore the major drivers. Our results demonstrated that the grassland conditions were improved, and the desertification area (35.28.104 km(2)) was smaller than the restoration area (38.77.104 km(2)) from 2001 to 2015 across Northern Tibet through the statistical analysis of different desertified gradient areas. A decrease in landscape indexes (e.g., patch density (PD) and splitting index (SPLIT)) and increases in largest patch index (LPI) and contagion index (CONTAG) were observed across Northern Tibet. The aridity index and grazing significantly influenced the landscape pattern of the whole alpine grassland. In general, changes in climate factors had the positive effects on the vegetation coverage of alpine grassland, but mean annual temperature had insignificant influence in alpine meadow and desert steppe (P > 0.05). In addition, mean annual precipitation had the most significant effect in the desert steppe (93.28%), followed by alpine steppe (79.31%) and alpine meadow (38.25%). Therefore, our results highlighted that the conditions of the alpine grassland were improved and more stable, and landscape fragmentations were mainly influenced by the aridity index and grazing. |
| WOS关键词 | DESERT STEPPE ; SPATIOTEMPORAL DYNAMICS ; AEOLIAN DESERTIFICATION ; ARIDITY INDEX ; VEGETATION ; ECOSYSTEM ; PLATEAU ; DEGRADATION ; NITROGEN ; CHINA |
| 资助项目 | State Key Research Development Program of China[2016YFC0502002] ; State Key Research Development Program of China[2016YFC0501803] ; National Natural Science Foundation of China[41501057] ; Construction Service Program for Cultivating Feature Institution of the Chinese Academy of Sciences[TSYJS05] ; Youth Innovation Research Team Project[LENOM2016Q0003] |
| WOS研究方向 | Biodiversity & Conservation ; Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:000490757500093 |
| 出版者 | ELSEVIER |
| 资助机构 | State Key Research Development Program of China ; National Natural Science Foundation of China ; Construction Service Program for Cultivating Feature Institution of the Chinese Academy of Sciences ; Youth Innovation Research Team Project |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/129776]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Sun, Jian |
| 作者单位 | 1.Tottori Univ, Arid Land Res Ctr, Tottori 6800001, Japan 2.Chinese Acad Sci, Synth Res Ctr Chinese Ecosyst Res Network, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modelling, Beijing 100101, Peoples R China 3.Chinese Acad Sci, Res Ctr Eco Environm Sci, State Key Lab Urban & Reg Ecol, Beijing 100085, Peoples R China 4.Rutgers State Univ, Sch Environm & Biol Sci, Dept Ecol Evolut & Nat Resources, New Brunswick, NJ 08901 USA 5.Chengdu Univ Technol, Coll Tourism & Urban Rural Planning, Chengdu 610059, Sichuan, Peoples R China 6.Chinese Acad Sci, Northwest Inst Plateau Biol, Qinghai Prov Key Lab Restorat Ecol Cold Area, Xining, Qinghai, Peoples R China 7.Tottori Univ, Int Platform Dryland Res & Educ, Tottori 6800001, Japan |
| 推荐引用方式 GB/T 7714 | Sun, Jian,Hou, Ge,Liu, Miao,et al. Effects of climatic and grazing changes on desertification of alpine grasslands, Northern Tibet[J]. ECOLOGICAL INDICATORS,2019,107:9. |
| APA | Sun, Jian.,Hou, Ge.,Liu, Miao.,Fu, Gang.,Zhan, TianYu.,...&Haregeweyn, Nigussie.(2019).Effects of climatic and grazing changes on desertification of alpine grasslands, Northern Tibet.ECOLOGICAL INDICATORS,107,9. |
| MLA | Sun, Jian,et al."Effects of climatic and grazing changes on desertification of alpine grasslands, Northern Tibet".ECOLOGICAL INDICATORS 107(2019):9. |
入库方式： OAI收割
来源：地理科学与资源研究所
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