In the primary nonresidential expenditure model, income, ethnicity, private or public lands, and forest lands had a significant effect on nonconsumptive wildlife recreation expenditures.
实证结果显示,在远距

出模型中,个
收入、种族肤色、公私有林地等影响因子,对于非
耗性野生动物游憩活动


出情形具有相对
显著性。
用自然物产(或资源)

工审核,其表达内容亦不代表本软件


