CAJ | 학술논문

以重庆三峡库区为研究对象,利用MODIS-NDVI为遥感特征参量,分析水稻关键生育期的长势并对产量进行预测.考虑到NDVI数据饱和的局限性,选取库区各区县0.2～0.8范围内的NDVI值与作物产量建立水稻估产模型,进行相关性分析,估算出的水稻产量表明,各关键生育期的相关性系数均在0.75以上,且与实产数据对比表明,各区县预测精度均在90%以上,可见利用MODIS-NDVI能够有效的进行水稻监测和估产.
이중경삼협고구위연구대상,이용MODIS-NDVI위요감특정삼량,분석수도관건생육기적장세병대산량진행예측.고필도NDVI수거포화적국한성,선취고구각구현0.2～0.8범위내적NDVI치여작물산량건립수도고산모형,진행상관성분석,고산출적수도산량표명,각관건생육기적상관성계수균재0.75이상,차여실산수거대비표명,각구현예측정도균재90%이상,가견이용MODIS-NDVI능구유효적진행수도감측화고산.
Taking Chongqing Three Gorges warehouse District as object of study, using MODIS-NDVI as a remote sense characteristic parameter, the growth condition of rice in the key growth period was analyzed and the yields of rice was predicted. Due to limitation of saturated NDVI data, NDVI in 0.2-0.8 range in every district and crop yields was selected to establish the model of rice yield estimation, and the correlation analysis was carried out. The results showed that relation coefficient was up to 0.75 in every key growth period. The comparison of forecasting result and actual outputs showed the forecasting was above 90 % in every areas or county, indicating that MODIS NDVI could be effectively used to monitor and estimate the rice yields.