| 冬小麦种植面积空间抽样效率影响因子分析 |
| |
| 引用本文： | 张锦水,潘耀忠,胡潭高,陈联裙,董燕生.冬小麦种植面积空间抽样效率影响因子分析[J].农业工程学报,2009,25(8):169-173. |
| |
| 作者姓名： | 张锦水 潘耀忠 胡潭高 陈联裙 董燕生 |
| |
| 作者单位： | 北京师范大学资源学院,地表过程与资源生态国家重点实验室,北京,100875 |
| |
| 基金项目： | 国家粮食主产区粮食作物种植面积遥感测量与估产业务系统（2006AA120101）；北京师范大学青年科学基金 |
| |
| 摘 要： | 基于遥感与抽样的农作物种植面积测量方法结合了遥感和抽样理论的优势，已经成为农作物种植面积测量中有着广泛应用前景的测量方法。以格网为单元，进行分层空间抽样，分析在二值图像的情况下，抽样格网大小、分层层数对抽样精度、抽样精度方差、抽样比的影响；将二值图像分类结果定义为作物区，随机混入不同丰度10%，20%，……，100%的冬小麦，在不同冬小麦丰度（即不同的分类误差）的前提下，分析抽样格网大小、分层层数、分类误差对抽样精度、抽样比的影响，确定最优分层定义为6层，在分类误差小于40%（即冬小麦丰度大于60%）的前提下，可以有效地进行空间抽样推算区域冬小麦种植面积，为农作物种植面积测量空间抽样方案的优化提供理论基础。
|
| 关 键 词： | 农作物，抽样，误差，二值图像 |
| 收稿时间： | 2009/5/10 0:00:00 |
| 修稿时间： | 2009/6/29 0:00:00 |
Analysis of influence factors about space sampling efficiency of winter wheat planting area |
| |
| Zhang Jinshui,Pan Yaozhong,Hu Tangao,Chen Lianqun,Dong Yansheng.Analysis of influence factors about space sampling efficiency of winter wheat planting area[J].Transactions of the Chinese Society of Agricultural Engineering,2009,25(8):169-173. |
| |
| Authors: | Zhang Jinshui Pan Yaozhong Hu Tangao Chen Lianqun Dong Yansheng |
| |
| Institution: | College of Resources Science and Technology;Beijing Normal University;State Key Laboratory of Earth Surface Processes and Resource Ecology;Beijing 100875;China |
| |
| Abstract: | Based on the sample space of farming area measurement method combining the advantages of remote sensing and sampling theory,spatial sample method has been widely applied for crop planting area.In the paper,a stratfied sampling method based on grid was introduced for such purposes.Firstly,with the 0-1 image,the effects of the factors of grid size,strata layer number on sampling accuracy,sampling variance and sampling ratio were analyzed.Secondly,binary image classification defining as result for crop area,ra... |
| |
| Keywords: | crops sampling errors binary image |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《农业工程学报》浏览原始摘要信息 |
| 点击此处可从《农业工程学报》下载免费的PDF全文 |
