生态环境学报2011，Vol.20Issue(4)：595-599,5.
中国各省区近10年遥感气溶胶光学厚度和变化
Chinese province-level variations and trends in aerosol optical depth from recent 10 years of remote sensing data
摘要
Abstract
Using the aerosol optical depth (AOD) data of MODIS from 2000 to 2009, annual AOD-averages and interannual AOD-changes over 29 Chinese province-level divisions are analyzed. High AOD-means over the 10 years concentrated in North,Central, and South China as well as Xinjiang in Northwest China, while low AOD-means were distributed in Qizhang Plateau,Northwest (excluding Xinjiang), Northeast and Southwest China. In 13 province-level divisions, the annul AOD-averages exceeded 0.4 with the maximal value of 0.735 in Jiangsu Province. In 15 province-level divisions, the AOD-averages ranged between 0.2 and 0.3 with the lowest values (＜0.2) in Xizhang and Helongjiang. Except Xinjiang, the high AOD-regions were located in the province-level divisions with high industrialization and dense population in China. Positive trends in annual AOD averaged over the all Chinese divisions are found with the rate of 0.019/10a or a 10-year increase of 4.3％. Averaged over all Chinese divisions, the annual AOD peaked in 2007 with the value of 0.4376 and then decline to 0.3720 in 2009, the lowest value for the 10 years. 17 province-level divisions in the high-emission regions of China experienced the positive trends in AOD of 0,006-0.099/10a, while 12 divisions in the low-emission areas presented the negative trends between -0.037 and -0.003/10a, which could imply a polarization of AOD-variations in China.关键词
中国/各省区/MODIS/气溶胶光学厚度(AOD)/变化趋势Key words
China/ provincial scale/ MODIS/ aerosol optical depth/ trends分类
资源环境引用本文复制引用
郑小波,周成霞,罗宇翔,陈娟,Tianliang ZHAO..中国各省区近10年遥感气溶胶光学厚度和变化[J].生态环境学报,2011,20(4):595-599,5.基金项目
国家自然科学基金(40965009) （40965009）
黔科合计Z20094006 （）
黔科合人才团队20104012 （）
