基于GVG采样系统的农作物估产可信度分析——以四川盆地为例
文献类型:期刊论文
作者 | 李爱农![]() |
刊名 | 遥感信息
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出版日期 | 2005 |
期号 | 4页码:18-21 |
关键词 | 农作物估产 GVG采样系统 遥感影像解译 |
其他题名 | Reliability Analysis of the Accuracy of Crop Yield Estimation Based on GVG Sampling System |
通讯作者 | 张海珍 |
合作状况 | 其它 |
中文摘要 | 以四川盆地的农作物估产为例,对GVG(GIS&VIDEO&GPS)采样系统的采样结果进行可信度分析。在试验区随机选取具有代表性的采样线,利用GVG采样系统提取样区内农作物种植比例。然后结合野外实地调绘结果对该地区进行遥感影像解译,在解译影像上对采样线不同缓冲区范围内的农作物面积进行提取,计算出农作物的种植比例。把遥感解译影像缓冲区分析结果为检验数据,采用误差最小可信度最高的原则对GVG采样系统采样结果的精度进行可信度分析。并基于可信度分析初步确定GVG采样系统的沿线采样最佳范围。 |
英文摘要 | GVG sampling system is a filed sampling system that integ rates the GPS, GIS and video technologies. It mainly photos the crop on the side of the sampling line taking the method of linear sampling , which could reflect how the crop g rows. T hen w e can ca-l culate the proportio n of ever y kind of crop from the photos using the GIS model. To analy ze the reliability of the accuracy of GVG sampling system, the article compares the result of GVG sampling system w ith t he one from image inter pretation, taking crop yield estimation of Sichuan basin as an example. The process of getting pro portion of crop ar ea includes tw o steps. Firstly, interpr eting the remotely sensed imag e of resear ch region and taking the r esults of field invest-i gation into account, then finding the certain location of sampling line on t he image. . Secondly, making buffer analysis to the line as w ell as calculating the crop area w ithin the buffers. And fitted analysis is mainly on t he principle that the smaller the fitted erro r is the mor e r eliable the result is. I n addition, the best range of the sampling line is also suggested, w ithin which the results of GVG sampling system are r eliable. |
分类号 | S126 |
资助信息 | 国家高技术研究发展计划(863计划)“粮食预警遥感辅助决策系统”(编号:2003AA131051);四川省“十五”重点项目“四川省国土资源经济可持续发展决策支持信息系统研究与构建”部分成果。 |
语种 | 中文 |
公开日期 | 2010-07-16 |
源URL | [http://ir.imde.ac.cn/handle/131551/842] ![]() |
专题 | 成都山地灾害与环境研究所_成都山地所知识仓储(2009年以前) 成都山地灾害与环境研究所_数字山地与遥感应用中心 |
推荐引用方式 GB/T 7714 | 李爱农. 基于GVG采样系统的农作物估产可信度分析——以四川盆地为例[J]. 遥感信息,2005(4):18-21. |
APA | 李爱农.(2005).基于GVG采样系统的农作物估产可信度分析——以四川盆地为例.遥感信息(4),18-21. |
MLA | 李爱农."基于GVG采样系统的农作物估产可信度分析——以四川盆地为例".遥感信息 .4(2005):18-21. |
入库方式: OAI收割
来源:成都山地灾害与环境研究所
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