| 王景雷,孙景生,刘祖贵,张寄阳.作物需水量观测站点的优化设计[J].水利学报,2005,36(2):0225-0231 |
| 作物需水量观测站点的优化设计 |
| Optimal arrangement of observation stations for crop water requirement |
| |
| DOI： |
| 中文关键词: GIS；半方差函数；Kriging方法 作物需水量；合理取样数；优化设计；冬小麦 |
| 英文关键词: semivariogram kriging method crop water requirement rational sampling number optimal design winter wheat |
| 基金项目: |
|
| 摘要点击次数: 2614 |
| 全文下载次数: 465 |
| 中文摘要: |
| 作物需水量观测站点的布置主要包括合理的采样数目和合理的采样位置的确定。本文将GIS的空间管理功能和地统计的空间分析功能有机结合，在分析作物需水量空间变异的基础上，首先用经典统计学确定合理的采样数目，进而利用地统计学处理空间结构的优良特性，确定合理的采样结构。在总结作物需水量观测站点优化设计主要步骤的基础上，对山东省冬小麦需水量进行空间分布分析和观测站点的优化设计。初步研究结果表明：现有的3个重点观测试验站并不能满足观测精度要求，必须补充必要的观测站点数目，增至10个左右较为合适。 |
| 英文摘要: |
| The GIS technology is applied to combine with geostatistics to optimize the rational sampling number and appropriate positioning of the observation stations for crop water requirement. Firstly, the rational sampling number is derived by classical statistic based on the analysis of spatial variation of crop water requirement. Then, the positions of observation stations are determined by geostatistics methods. The procedure of the optimal design is proposed. This method is applied to design the optimal arrangement of the observation stations for water requirement of winter wheat in Shandong Province. The calculated result shows that the original arrangement which includes only 3 stations can not meet the necessary accuracy. It must be added to 10 stations. |
|
查看全文
查看/发表评论 下载PDF阅读器 |
| 关闭 |