Diverse Responses of Remotely Sensed Grassland Phenology to Interannual Climate Variability over Frozen Ground Regions in Mongolia
文献类型：SCI/SSCI论文
| 作者 | Sun Z. G.; Wang, Q. X.; Xiao, Q. G.; Batkhishig, O.; Watanabe, M. |
| 发表日期 | 2015 |
| 关键词 | air temperature precipitation spring phenology autumn phenology grassland frozen ground permafrost tibetan plateau spring phenology soil-moisture green-up model winter |
| 英文摘要 | Frozen ground may regulate the phenological shifts of dry and cold grasslands at the southern edge of the Eurasian cryosphere. In this study, an investigation based on the MODIS Collection 5 phenology product and climatic data collected from 2001 to 2009 reveals the diverse responses of grassland phenology to interannual climate variability over various frozen ground regions in Mongolia. Compared with middle and southern typical steppe and desert steppe, the spring (start of season; SOS) and autumn (end of season; EOS) phenological events of northern forest steppe with lower air temperature tend to be earlier and later, respectively. Both the SOS and EOS are less sensitive to climate variability in permafrost regions than in other regions, whereas the SOS of typical steppe is more sensitive to both air temperature and precipitation over sporadic permafrost and seasonal frozen ground regions. Over various frozen ground regions in Mongolia; the SOS is mainly dominated by the prior autumn precipitation, and frozen ground plays a vital role in storing the precipitation of the previous autumn for the subsequent grass green-up. The EOS is mainly dominated by autumn air temperature. These findings could help to improve phenological models of grasslands in extremely dry and cold regions. |
| 出处 | Remote Sensing |
| 卷 | 7 |
| 期 | 1 |
| 页 | 360-377 |
| 语种 | 英语 |
| ISSN号 | 2072-4292 |
| DOI标识 | 10.3390/rs70100360 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/43569]  |
| 专题 | 地理科学与资源研究所_历年回溯文献 |
| 推荐引用方式 GB/T 7714 | Sun Z. G.,Wang, Q. X.,Xiao, Q. G.,et al. Diverse Responses of Remotely Sensed Grassland Phenology to Interannual Climate Variability over Frozen Ground Regions in Mongolia. 2015. |
入库方式： OAI收割
来源：地理科学与资源研究所
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