摘要
基于MODIS 2000-2005（缺2004年）5a每8d的GPP资料，分析了中国陆地植被生长特征，讨论了我国气候因子（温度、降水以及辐射）对同期植被生长的影响。研究结果显示，中国陆地植被的年均GPP分布范围在0-3252．6gC·m^-2·a^-1之间，5a平均值为491．1gC-m^-2·a^-1；年均GPP最大的地方主要分布于云南南部、海南、台湾以及东南沿海部分地区，最小值主要出现在青藏高原、新疆以及内蒙古西部等高寒、干旱地区。温度是影响同期我国陆地植被生长的主要因子，其次为降水，辐射对我国陆地植被的影响比较小，主要影响区域在华南地区。陆地植被GPP与温度和降水的相关系数在我国表现为自北向南逐渐减小的分布特征，与对应气候因子的分布呈反向关系；而GPP与云量的相关系数则自北向南逐渐增大。
The terrestrial growth characteristics of China and their relationship with various climatic factors （e. g. temperature, precipitation and radiation） were investigated using the data collected by the Moderate Resolution Imaging Spectroradiometer （MODIS）. This data was collected during the period between 2000 -2003 and then again in 2005, with the collections occurring once every 8 days. The average annual gross primary production （GPP） in China during this time period ranged from 0 to 3252.6gC-m^-2·a^-1 with an average value of 491. 1gC-m^-2·a^-1 being recorded. The maximum observed values of the GPP were distributed over the regions of Yunnan, Hainan and the Taiwan Residents provinces and southeast coastal areas, while the minimum values were observed in the cold and arid regions of the Tibeten Plateau, Xinjiang and Inner Mongolia. Correlation analysis showed that temperature was the primary factor influencing this terrestrial growth, with precipitation playing a secondary role. However, only the terrestrial growth that occurred in southern China were affected by radiation. The correlation coefficients of the GPP with temperature and precipitation decreased from northern to southern China and were negatively related with the distribution of the associated climatic factors within China. Furthermore, the correlation coefficient of the GPP with cloud contents was observed to increase from northern to southern China.
出处
《生态学报》
CAS
CSCD
北大核心
2007年第12期5086-5092,共7页
Acta Ecologica Sinica
基金
国家重点基础研究发展计划资助项目(2006CB400503)~~
