摘要
以江西省为试验区 ,探讨用 RS- GIS- GPS技术监测作物长势的方法和途径。针对丘陵山区地形复杂、地块不成规模的情况 ,在 GIS支持下 ,将数字高程数据、土地利用分类数据与 GPS定位观测数据相结合 ,对 NOAA/AVHRR进行判读 ,提取反映双季晚稻长势的植被指数 ,用该指数与 GPS定位观测资料及地理信息数据进行监督分类监测苗情 ,并用迭代自组织分析法进行无 GPS定位观测资料时相应时相的NOAA/AVHRR的长势监测。研究结果表明 ,选用的地理信息数据 (数字高程数据、土地利用分类 )与 GPS定位观测资料相结合提高
This study,taking Jiangxi Province as a test area,was to investigate how to comprehensively use RS,GIS and GPS (3S) technique in monitoring crop growth. Due to the complex hilly terrain in southern China,land use/cover information and GPS measurements were both applied for interpretation of NOAA/AVHRR,extraction of vegetation index and then observation of seedling's growing status for late rice of double harvest. Finally in terms of iterative auto organized analysis,monitoring of rice growth vigour could be realized from corresponding phase specific NOAA/AVHRR when there are no GPS measurements.Results show that combination of the data on geographical information including digital elevation and land use type with GPS measurements may be appropriate and feasible to better utilization of NOAA/AVHHR data.
出处
《南京气象学院学报》
CSCD
北大核心
2001年第1期106-112,共7页
Journal of Nanjing Institute of Meteorology
基金
江西省科委星火计划资助项目
