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英文文献：Exploring demand for forestry in Lake Victoria Basin (Western Kenya): An econometric approach-探索维多利亚湖盆地(肯尼亚西部)的林业需求:一种计量经济学方法
英文文献作者：Jindal, Rohit
英文文献摘要：
This paper determines the demand for a forestry program amongst rural households in western Kenya. It is based on a field survey with 277 households, using a stratified random sampling approach. The study follows attribute based method to elicit farmers’ preferences. Demand is measured in terms of additional number of trees that a household is willing to plant under different price schedules, including direct economic incentive to plant new seedlings. The mean willingness to plant new trees per household increases from 44 trees when farmers have to pay 10ksh/seedling, to 244 trees when farmers receive a payment of 10ksh/seedling. The paper uses fixed effects, random effects and random effect tobit models to estimate relevant parameters. Hausman specification test is returned insignificant, while implies that random effects specification is not incorrect. Price of seedlings (negative effect), availability of timber species (positive effect), gender of the respondent (men likely to plant more trees than women), and availability of agricultural labor at the household (positive) were all found to be significant. Increase in price of a seedling by 1Ksh reduced demand by nine seedlings, while addition of an adult who works full-time on the family farm will raise the demand for seedlings by 18. Furthermore, farmers in Yala River basin were likely to plant more trees than those in the Nyando River basin.
本文确定了肯尼亚西部农村家庭对林业项目的需求。它是基于对277户家庭的实地调查，采用分层随机抽样的方法。本研究采用基于属性的方法来考察农户的偏好。需求是根据一个家庭在不同的价格计划下愿意种植的树木数量来衡量的，包括种植新树苗的直接经济刺激。农户每户种植新树的平均意愿从每棵幼苗需支付10ksh的44棵增加到每棵幼苗需支付10ksh的244棵。本文采用固定效应、随机效应和随机效应的tobit模型来估计相关参数。Hausman规范检验返回不显著，但暗示随机效应规范不是不正确的。苗木价格(负影响)、木材种类的可得性(正影响)、受访者的性别(男性可能比女性种植更多的树木)和家庭农业劳动力的可得性(正影响)都被发现是显著的。一棵幼苗的价格每上涨1千先令，需求就会减少9棵，而如果家庭农场增加一名全职工作的成年人，需求就会增加18棵。此外，雅拉河流域的农民可能比尼延多河流域的农民种植更多的树木。
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