生态科学2018，Vol.37Issue(6)：67-74,8.DOI:10.14108/j.cnki.1008-8873.2018.06.009
CVM投标值子样本量对耕地保护外部性测度结果精度的影响分析
Effects of sample size of bid value on the accuracy of cultivated land protection externalities
摘要
Abstract
In this study, we determinate the effects of sample size of bid value on the accuracy of cultivated land protection externalities in dichotomy CVM.The results show that: (1) accuracy of calculated results is highly affected by total sample size and sub-sample size of each bid value in different sampled schemes of dichotomous CVM.Meanwhile, the estimated value of double boundary dichotomy WTP is more sensitive than that of single boundary dichotomy WTP with changes of sub-sample size of bid value. (2) When sub-sample size of bid value is more than 30, the impact of the sub-sample size on the results of double boundary dichotomy WTP is getting smaller and the value is become stable. (3) In the dichotomous CVM, when use estimated result of WTP as a reference value, the sub-sample size of bid value should be greater than 30.The accuracy of the estimation is relatively high under double boundary dichotomy.The externality interval value of cultivated land protection obtained in our study can be used as a reference for formulating economic compensation standards of cultivated land protection in Jiaozuo.关键词
样本方案/投标值子样本量/二分式CVM/耕地保护外部性/焦作市Key words
sampled scheme/sub-sample size of bid value/dichotomy CVM/cultivated land protection externalities/Jiaozuo分类
管理科学引用本文复制引用
王坤鹏,牛海鹏..CVM投标值子样本量对耕地保护外部性测度结果精度的影响分析[J].生态科学,2018,37(6):67-74,8.基金项目
河南省科技攻关项目(182102110260) （182102110260）
河南理工大学创新型科研团队(T2018-4) （T2018-4）
