讲座题目：Understanding Global Vegetation Dynamics with Remote Sensing and the Coupled Carbon and Water Model
主 讲 人：Conghe Song Professor
主 持 人：李俊祥 教授
开始时间：2017-12-05（周二）14:00
讲座地址：闵行校区 生辅楼119会议室
报告人简介：
宋从和(Conghe Song)博士现任北卡罗来纳大学教堂山分校地理系教授和副系主任，同时担任地理信息系统研究生认证项目的主任。宋从和1988年获安徽农业大学林学专业学士学位，1991年北京林业大学森林生态学硕士学位，2001年波士顿大学地理学博士学位。博士毕业后直接受聘北卡罗来纳大学教堂山分校地理系任教至今。获2006年美国NASA青年基金奖，2005-2006哈佛大学布拉德学者奖（Bullard Fellow）。主要研究兴趣包括环境遥感、生态模型和人与自然相互作用，尤其是利用遥感、模拟模型和地面观测手段理解气候变化背景下土地利用土地覆盖变化对生态系统功能的影响。主持美国国家自然科学基金、NASA、美国林务局、中国国家自然科学基金等多个科研项目，在Nature、Global Change Biology、Remote Sensing of Environment、Journal of Geophysical Research、Landscape Ecology、Global Ecology and Biogeography、Agricultural and Forest Meteorology、Progress in Physical Geography等刊物发表学术论文60多篇。SCI最高单篇引用率超过930次。
报告内容简介:
Vegetation on the Earth’s land surface provides numerous key ecosystems services upon which the society’s welfare depends, such as provision of food and fiber, habitats for wildlife, soil and water conservation, and mitigation of global warming. Therefore, its dynamics have profound implications. In this talk I will present the most recent understanding of the temporal trend of global vegetation activities since 2000 when one of NASA’s key EOS instruments, the MODerate Imaging Spectroradiometer (MODIS), was launched. MODIS revolutionized our observation of the Earth. Based on the most recent release of the NASA MODIS Collection 6 data, Earth has experienced strong greening since 2000. However, this global greening does not necessarily lead to enhanced carbon storage. Using the remotely sensed data as input to the Coupled Carbon and Water model, we found that the trend in global Gross Primary Productivity (GPP) is much less stronger than the greening trend due to stress from climatic factors. Moreover, the majority of the greening happens in non-forest areas, particularly cropland where there is a limited capacity for carbon storage. The GPP for forest, which is the primary biome for carbon sequestration, in fact decreased mainly driven by tropical forest. Therefore, we cannot count very much on vegetation taking extra amount of carbon dioxide out of the atmosphere to meet the goal of Paris Agreement in slowing down global warming.
