| Vegetation Changes along the Qinghai-Tibet Plateau Engineering Corridor Since 2000 Induced by Climate Change and Human Activities | |
| Song, Yi1; Jin, Long2; Wang, Haibo3 | |
| 2018 | |
| 发表期刊 | REMOTE SENSING
 |
| 卷号 | 10期号:1 |
| 文章类型 | Article |
| 摘要 | The Qinghai-Tibet (QT) Plateau Engineering Corridor is located in the hinterland of the QT Plateau, which is highly sensitive to global climate change. Climate change causes permafrost degradation, which subsequently affects vegetation growth. This study focused on the vegetation dynamics and their relationships with climate change and human activities in the region surrounding the QT Plateau Engineering Corridor. The vegetation changes were inferred by applying trend analysis, the Mann-Kendall trend test and abrupt change analysis. Six key regions, each containing 40 nested quadrats that ranged in size from 500 x 500 m to 20 x 20 km, were selected to determine the spatial scales of the impacts from different factors. Cumulative growing season integrated enhanced vegetation index (CGSIEVI) values were calculated for each of the nested quadrats of different sizes to indicate the overall vegetation state over the entire year at different spatial scales. The impacts from human activities, a sudden increase in precipitation and permafrost degradation were quantified at different spatial scales using the CGSIEVI values and meteorological data based on the double mass curve method. Three conclusions were derived. First, the vegetation displayed a significant increasing trend over 23.6% of the study area. The areas displaying increases were mainly distributed in the Hoh Xil. Of the area where the vegetation displayed a significant decreasing trend, 72.4% was made up of alpine meadows. Second, more vegetation, especially the alpine meadows, has begun to degenerate or experience more rapid degradation since 2007 due to permafrost degradation and overgrazing. Finally, an active layer depth of 3 m to 3.2 m represents a limiting depth for alpine meadows. |
| 关键词 | Permafrost Degradation Human Activities Vegetation Change Scale Effect Qinghai-tibet Plateau Engineering Corridor |
| WOS标题词 | Science & Technology ; Technology |
| DOI | 10.3390/rs10010095 |
| 关键词[WOS] | PERMAFROST CHANGES ; CHINA ; DYNAMICS ; DESERTIFICATION ; VARIABILITY ; ECOSYSTEMS ; PARAMETERS ; QUALITY ; MODEL ; SCALE |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS研究方向 | Remote Sensing |
| WOS类目 | Remote Sensing |
| WOS记录号 | WOS:000424092300094 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.ieecas.cn/handle/361006/5184 |
| 专题 | 生态环境研究室 |
| 作者单位 | 1.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Shaanxi, Peoples R China 2.CCCC First Highway Consultants Co Ltd, Minist Transport, Key Lab Highway Construct & Maintenance Technol P, Xian 710065, Shaanxi, Peoples R China 3.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Lanzhou 730000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Song, Yi,Jin, Long,Wang, Haibo. Vegetation Changes along the Qinghai-Tibet Plateau Engineering Corridor Since 2000 Induced by Climate Change and Human Activities[J]. REMOTE SENSING,2018,10(1). |
| APA | Song, Yi,Jin, Long,&Wang, Haibo.(2018).Vegetation Changes along the Qinghai-Tibet Plateau Engineering Corridor Since 2000 Induced by Climate Change and Human Activities.REMOTE SENSING,10(1). |
| MLA | Song, Yi,et al."Vegetation Changes along the Qinghai-Tibet Plateau Engineering Corridor Since 2000 Induced by Climate Change and Human Activities".REMOTE SENSING 10.1(2018). |
| 条目包含的文件 | ||||||
| 文件名称/大小 | 文献类型 | 版本类型 | 开放类型 | 使用许可 | ||
| Vegetation Changes a（14807KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | 请求全文 | |
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