摘要
利用MODIS传感器的MOD17A3数据,通过处理获取了广东省的NPP(植被净初级生产力)分布图;同时,根据Landsat获取的广东省土地利用类型图,提取出广东省水稻的空间分布图。将两者叠加并进行相关运算和分析,得到全省水稻生物量的分布图及其统计数据。同时,进行野外测量并参考已有的研究成果,取稻草和稻秆产量与水稻产量的重量比为0.623,获得水稻总的农作物残余。除去还田、造纸及用做牲畜饲料的那部分,仍有三成左右的可用生物量。研究表明:珠江三角洲经济发展迅猛的城市,水稻生物质能的占有量较少;而在一些边远山区,水稻生物质能占的比重明显偏大。本文通过定量化的研究,为以后广东省水稻生物质能的开发提供了有价值的参考信息。
Utilize Modis sensor＇s data-MOD17A3 and ModisTool, we can get the distribution of NPP （Net Primary Production） in Guangdong province. In addition, we can separate the distribution of paddy in Guangdong using Landsat TM images. After that we overlay the two maps and then do some analysis. Finally, we gain the paddy＇ s biomass in Guangdong province and some statistic data. Also, based on our fieldwork and some existing outcomes, i.e., the ratio of paddy＇ s grass to grain is 0. 623, then we can get the gross straw and stalk. Some of them are left in the field, some are used for paper making and forage, about 30% of them are available for bio-energy. Our research indicates that the cities in the Pearl River Delta have little rice＇s bio-energy; but in the mountainous areas far away from the Pearl River Delta, there are more bio-energy. By quantitative study in this article, we can offer valuable information for the exploitation of rice＇ s bio-energy in Guangdong province in the future.
出处
《遥感信息》
CSCD
2007年第1期26-29,21,I0003,共6页
Remote Sensing Information
基金
中山大学"985工程"GIS与遥感的地学应用科技创新平台(Ⅱ类)项目
