期刊
GISCIENCE & REMOTE SENSING
卷 54, 期 4, 页码 534-551出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/15481603.2017.1291783
关键词
crop modeling; GRAMI-rice; remote sensing; satellite image; spatial variation
资金
- Basic Science Research Program through the National Research Foundation of Korea - Ministry of Education, Science and Technology [NRF-2011-0009827, NRF-2015R1D1A1A01057586]
Monitoring crop conditions and forecasting crop yields are both important for assessing crop production and for determining appropriate agricultural management practices; however, remote sensing is limited by the resolution, timing, and coverage of satellite images, and crop modeling is limited in its application at regional scales. To resolve these issues, the Gramineae (GRAMI)-rice model, which utilizes remote sensing data, was used in an effort to combine the complementary techniques of remote sensing and crop modeling. The model was then investigated for its capability to monitor canopy growth and estimate the grain yield of rice (Oryza sativa), at both the field and the regional scales, by using remote sensing images with high spatial resolution. The field scale investigation was performed using unmanned aerial vehicle (UAV) images, and the regional-scale investigation was performed using RapidEye satellite images. Simulated grain yields at the field scale were not significantly different (p=0.45, p=0.27, and p=0.52) from the corresponding measured grain yields according to paired t-tests (=0.05). The model's projections of grain yield at the regional scale represented the spatial grain yield variation of the corresponding field conditions to within +/- 1 standard deviation. Therefore, based on mapping the growth and grain yield of rice at both field and regional scales of interest within coverages of a UAV or the RapidEye satellite, our results demonstrate the applicability of the GRAMI-rice model to the monitoring and prediction of rice growth and grain yield at different spatial scales. In addition, the GRAMI-rice model is capable of reproducing seasonal variations in rice growth and grain yield at different spatial scales.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据