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首页> 外文会议>Conference on Biological Quality and Precision Agriculture II, Nov 6-8, 2000, Boston, USA >Cereal production assessment for Korea-north
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Cereal production assessment for Korea-north

机译：朝鲜北部谷物生产评估

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摘要

This study demonstrated that it is possible to develop a production assessment system in North Korea using a model containing the NDVI derived from the NOAA/AVHRR satellite database. The model-produced production estimates are found to be timely and accurate when compared to the traditional estimates. There are two hypotheses in this study to be stated: the use of the lands in North Korea has not greatly varied over years; the crops cultivated in North Korea have not greatly changed in kinds over years. As we know, it is possible to separate the cultivated areas from lands for other uses by some kinds of satellite image data, but it is not feasible to get a clear satellite image for every year. Therefore, land cover image for 1998 is used as the substitute of that for every year in this study. And in this study, rice and maize are estimated together as cereals. If the proportion of each kind is significantly changed, predictions derived from this model will be inaccurate.
机译：这项研究表明，使用包含源自NOAA / AVHRR卫星数据库的NDVI的模型，可以在朝鲜开发生产评估系统。与传统估计相比，该模型产生的生产估计被认为是及时且准确的。在这项研究中有两个假说要陈述：北朝鲜土地的使用多年来没有太大变化；朝鲜种植的农作物多年来没有发生很大变化。众所周知，可以通过某种卫星图像数据将耕地与其他用途分开，但是每年获取清晰的卫星图像是不可行的。因此，本研究以1998年的土地覆盖率图像代替了每年的覆盖率图像。在这项研究中，大米和玉米一起被估计为谷物。如果每种类型的比例发生显着变化，则从该模型得出的预测将是不准确的。

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