违反了 PRIMARY KEY 约束 'PK_t_counter'。不能在对象 'dbo.t_counter' 中插入重复键。 语句已终止。 1982-1999年中国区域叶面积指数变化及其与气候变化的关系-The Variation of Leaf Area Index in China from 1982 to 1999 and Its relationships with Climate Change
doi:  10.3878/j.issn.1006-9585.2016.16061
1982-1999年中国区域叶面积指数变化及其与气候变化的关系

The Variation of Leaf Area Index in China from 1982 to 1999 and Its relationships with Climate Change
摘要点击 281  全文点击 222  投稿时间:2016-03-23  最后修改时间:2016-04-13
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基金:  国家自然科学基金91437111, 41375111
中文关键词:  LAI 植被变化  季节变化 气候变化  人类活动
英文关键词:  leaf  area index, vegetation  change, seasonal  change, climate  change, human  activities
     
作者中文名作者英文名单位
彭飞Peng Fei中国科学院大气物理研究所大气科学和地球流体力学数值模拟国家重点实验室
孙国栋Sun Guo Dong中国科学院大气物理研究所大气科学和地球流体力学数值模拟国家重点实验室
引用:彭飞,孙国栋.2016.1982-1999年中国区域叶面积指数变化及其与气候变化的关系[J].气候与环境研究
Citation:Peng Fei,Sun Guo Dong.2016.The Variation of Leaf Area Index in China from 1982 to 1999 and Its relationships with Climate Change[J].Climatic and Environmental Research(in Chinese)
中文摘要:
      利用1982-1999年Pathfinder AVHRR卫星遥感观测的植被叶面积指数(LAI)资料和中国730个气象台站的温度、降水观测资料,研究了中国不同地区(东北地区、华北地区、长江流域、华南地区和西南地区)LAI的的季节、生长季和年变化,及其与气候变化(温度、降水)的关系。结果表明,在中国大部分地区,年平均LAI和生长季平均LAI均是增加的。由于区域和季节气候的差异,LAI变化趋势具有明显的空间和季节非均一性。从区域平均的角度来看,不同地区年和生长季平均LAI都有增加趋势,并且在华南地区增加最快。因而在全球变化背景下,华南地区可能是潜在的碳汇。在季节尺度上,各地区区域LAI也是增加的,并且都在春季增加显著。温度变化是LAI变化的主要原因。但是人类活动如农业活动、城市化等对华北平原、长江三角洲和珠江三角洲等地区LAI变化的作用不容忽视。
Abstract:
      By using the Pathfinder AVHRR remote sensing data of leaf area index during 1982-1999 and the observed temperature and precipitation data from 730 meteorological stations, the changes of seasonal LAI, LAI in the growing season and annual LAI are investigated in different areas of China (including Northeast China, North China, the Yangtze valley, South China and Southwest China) as well as their relationships with climate change (temperature and precipitation). The results show that in most areas of China, the annual LAI and LAI in the growing season are increased, which are mainly caused by the rising temperature. Due to the difference of the seasonal and regional climate, there exists obvious regional and seasonal heterogeneity in the LAI variation tendency. From the view of regional averages, annual LAI and LAI in the growing season of different regions are both increased, especially in the South China. Therefore, South China might be a potential carbon sink under global change. On the seasonal scale, the regional averaged LAI of different sub-regions are all increased as well, especially in spring. In addition, the changes in LAI are mainly attributed to the variations in temperature. However, the impacts of human activities, such as agricultural activity and urbanization, on the LAI changes in the North China Plain, the Yangtze River delta and the Pearl River delta couldn’t be ignored.
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