Estimation of the Brazilian Coffee Harvest by Sampling Survey
通过抽样调查估计巴西咖啡收成AI 解读 ↓
← 返回论文列表与筛选
阅读说明
本页整理公开书目信息，不生成学术质量评分。AI 解读根据题名及所注明的摘要或原文片段生成，未完成全文核验，可能有误；具体假设、证明与结论请核对原文。摘要保留来源文本，未经模型改写。
DOI 首次登记不等于接收或发表日期。部分更正、评论等条目没有独立摘要；缺少可靠材料时保留待补状态。
引用量采用 OpenAlex 单条关联记录，不合计多个记录；关联记录可能包含正式发表版本，不等于此版本单独引用。缺失不视为零，引用指标不代表论文质量。
关注作者按书目中的完整姓名匹配，同名和姓名变体需人工辨别。相关论文先按共享细分方向和具体方法排列，再参考通用方法与发表日期。
分类依据与纠错
AI 根据所提供的论文材料归类：摘要是农业抽样调查设计，未涉及宏观面板、产量预测模型或其他所列细分方向。
反馈分类问题
正在核对关联版本…
代码、数据与补充材料
正在核对对应版本的资源…
关注这篇论文的作者
通过抽样调查估计巴西咖啡收成
- 研究问题
- 如何根据巴西各州已有作物调查、土地所有者登记与航空摄影资料，建立持续抽样调查以估计咖啡收成并评估工作量？
- 方法与思路
- 作者按各州抽样框条件提出方案，包括调整现有调查、构建咖啡种植者索引并补充抽样，以及使用航空摄影抽样框。
- 材料陈述的贡献
- 摘要称部分州已有资料可支持调查，试点数据用于估算工作量，航空摄影可提供满意抽样框，并指出另一些州的资料限制。
- 阅读关注点
- 应核对目标总体、抽样框覆盖、主样本与补充样本的衔接，估计量与精度标准，以及试点工作量向各州推广的依据。
- 阅读边界
- 材料为稿件版本未注明的 OpenAlex 索引摘要；精度与工作量数值未提供，所述登记和摄影条件属于历史背景，不能视为当前事实。
原文摘要
This article describes the results of an investigation, carried out on behalf of the Instituto Brasileiro do Café, into the possibilities of estimating the Brazilian coffee crop by means of a permanent sampling survey. The state of São Paulo already has a general sampling survey for the principal crops. With some modification, this would furnish estimates with adequate precision for coffee. In the states of Minas Gerais, Rio de Janeiro and Paraná, there exist registers of property owners suitable for use as frames. From them could be constructed indexes of coffee growers, so that the primary sample would be drawn from this index, with a supplementary sample from the remainder. From data of the pilot survey, an estimate is made of the volume of work which would be needed. The state of Paraná has recently been surveyed by aerial photography. It was found that this photograph provides a very satisfactory frame for sampling. The state of Espirito Santo possesses no register of property owners, and it is suggested that the sampling survey in that state will have to await a survey by aerial photography.