【摘要】 为了对江苏省张家港市水稻生产力进行大面积高效估测,建立一个科学准确的方法平台,利用TM和IRS-P6遥感影像,采用NDVI值比较区分法,应用"3S"技术对张家港市2005—2008年水稻的生产力变化进行了动态估测。结果表明:利用"3S"技术定量估测张家港市2005—2008年水稻平均种植面积的精度结果为96.41%;水稻平均单产精度结果为91.73%;水稻总产量遥感估测值与地面统计值差异结果为-11.69%;遥感估测张家港市水稻总产量呈逐年上升的趋势,而耕地面积相对稳定。总之,基于"3S"技术定量估测张家港市近4年水稻生产力精度达到95%以上,实现了利用遥感技术估测张家港市大面积农业生产力的目的。更多还原

【Abstract】 In order to estimate the rice agricultural productivity over a broad areas efficiently as well as provide a scientific and accurate method in Zhangjiagang City,Jiangsu Province,the TM and IRS-P6 remote sensing images were chosen as analytical materials and based on NDVI value comparison method.The wheat productivity changes in Zhangjiagang City from 2005 to 2008 were dynamically estimated by "3S" technology.The results showed that the remote sensing estimation accuracy of the average acreage of rice in Zhangjiagang City from 2005 to 2008 was 96.41%;the remote sensing estimation accuracy of the average per unit area yield of rice was about 91.73%;the discrepancy of total rice production value between remote sensing estimation and ground statistics was-11.69%;the total yield of rice in Zhangjiagang City was increasing year by year,while the cultivated area was relatively stable.Above all,the accuracy of quantitative estimation for rice productivity using 3S technology in Zhangjiagang City from 2005 to 2008 was more than 95%,the goal of estimating the agricultural productivity by "3S" technology over a broad areas in Zhangjiagang City have been achieved.更多还原