Spatiotemporal Variations in Fractional Vegetation Cover and Their Responses to Climatic Changes on the Qinghai-Tibet Plateau
文献类型：期刊论文
| 作者 | Han, Haoshuang; Yin, Yunhe; Zhao, Yan; Qin, Feng |
| 刊名 | REMOTE SENSING
 |
| 出版日期 | 2023-05-19 |
| 卷号 | 15期号:10页码:2662 |
| 关键词 | fractional vegetation cover alpine vegetation spatiotemporal variations climatic changes partial correlation analyses Qinghai-Tibet Plateau |
| ISSN号 | 2072-4292 |
| DOI | 10.3390/rs15102662 |
| 产权排序 | 1 |
| 文献子类 | Article |
| 英文摘要 | The alpine vegetation of the Qinghai-Tibet Plateau (QTP) is extremely vulnerable and sensitive to climatic fluctuations, making it an ideal area to study the potential impacts of climate on vegetation dynamics. Fractional vegetation cover (FVC) is regarded as one of the key indicators in monitoring semiarid and arid ecosystems due to its sensitive responses to vegetation behavior under climatic changes. Although many studies have analyzed the responses of vegetation on the QTP to climatic change, limited information is available on the influence of climatic variables on FVC changes in this area. In this study, we used satellite images and meteorological data to investigate the spatiotemporal variations of FVC during the growing season (FVCGS) during 1998-2018 and evaluated the responses to changes in climatic variables. Results showed that FVCGS displayed an overall fluctuating rise of 0.01/10 a (p < 0.01) over the study period. The FVCGS variation was spatially heterogeneous, with a general trend of greening in the northern and browning in the southern QTP. Obvious correlations were observed between the average FVC, average temperature, and total precipitation of the growing season, with precipitation being the primary controlling factor for vegetation growth. Some regions in the northwestern and northeastern QTP showed greening trends due to the positive influence of precipitation. Some areas in the southwestern QTP experienced browning trends due to water shortages caused, probably, by the weakening of the Indian monsoon. Browning in the southeastern parts was likely caused by drought and permafrost degradation resulting from high temperature. The inconsistent trend of vegetation change on the QTP is relatively high considering the continuous warming and changing atmospheric circulation patterns. FVC in most regions of the QTP has 0-1 month temporal responses to precipitation and temperature. Moreover, the one-month lagged effects of temperature and precipitation had a greater influence on steppe and desert vegetation than on other vegetation types. This research provides new perspectives for understanding the QTP vegetation response to climatic changes and a basis for making reasonable vegetation conservation and management policies. |
| 学科主题 | Environmental Sciences & Ecology ; Geology ; Remote Sensing ; Imaging Science & Photographic Technology |
| WOS关键词 | SPATIAL VARIATIONS ; PRODUCTIVITY ; DYNAMICS ; REGIONS ; MODEL |
| WOS研究方向 | Environmental Sciences & Ecology ; Geology ; Remote Sensing ; Imaging Science & Photographic Technology |
| 出版者 | MDPI |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/193796]  |
| 专题 | 陆地表层格局与模拟院重点实验室_外文论文 |
| 作者单位 | 1.University of Chinese Academy of Sciences, CAS 2.Chinese Academy of Sciences 3.Institute of Geographic Sciences & Natural Resources Research, CAS |
| 推荐引用方式 GB/T 7714 | Han, Haoshuang,Yin, Yunhe,Zhao, Yan,et al. Spatiotemporal Variations in Fractional Vegetation Cover and Their Responses to Climatic Changes on the Qinghai-Tibet Plateau[J]. REMOTE SENSING,2023,15(10):2662. |
| APA | Han, Haoshuang,Yin, Yunhe,Zhao, Yan,&Qin, Feng.(2023).Spatiotemporal Variations in Fractional Vegetation Cover and Their Responses to Climatic Changes on the Qinghai-Tibet Plateau.REMOTE SENSING,15(10),2662. |
| MLA | Han, Haoshuang,et al."Spatiotemporal Variations in Fractional Vegetation Cover and Their Responses to Climatic Changes on the Qinghai-Tibet Plateau".REMOTE SENSING 15.10(2023):2662. |
入库方式： OAI收割
来源：地理科学与资源研究所
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