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cash trees中文是什么意思

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用"cash trees"造句"cash trees"怎么读"cash trees" in a sentence

中文翻译手机手机版

  • 经济林

例句与用法

  • The thesis is based on income question , forest coverage rate and grop production . to beging with , date envelopment analysis is proved that it can be applicated into grain for green in shan - bei district , and then in view of the fact , seven esential factors which have influence on the project are found out : expense of dam , expense of crop , expense of cash tree , expense of defense tree , other economic crop , expense of grass and graziery ; and the output factors include : income of gdp , pure income per captia , the area of decreasing land loss , graziery income , crop production , income of tree , the totle income of economic crop . after the date of each facts are puted into dea model , unefficiencial decision making units ( dmu ) found . the data that are got through adjusting unefficiencial dmus dy dea can offer guide in shanbei district upgrading of an industrial structure . at the same time , taking into account some possible problems in or after grain for green in shan - bei district , the thesis bring out some propesal to improve the circ umstance , enhance the life level and put the relation of population , resource and circumstance into a healthy orbit
    因此,加快退耕还林还草,调整土地利用结构和产业结构,已成为实现山川秀美工程和可持续发展战略的必经之路。论文以解决陕北地区的收入问题,植被问题以及粮食产量问题为出发点,首先从理论上分析了包络分析方法在陕北地区退耕还林(草)中运用的可行性,然后结合陕北地区目前的实际情况,综合分析出影响陕北地区退耕还林(草)的关键的七个因素作为输入指标:水利水保设施投入,农作物投入,经济林种支出,防护林支出,其它经济作物,草类支出,畜牧业投入;以退耕还林所要解决的最终问题作为输出指标: gdp收入、农民人均纯收入、水土流失减少量、牧业总产值、粮食产量、林业总产值、其他经济作物总产值。将各指标所对应的数据代入模型后,通过分析求解得出非有效的决策单元,再运用包络分析方法的一些基本原理对非有效的决策单元进行调整,由此所得的数据对陕北地区的实际投入具有很好的指导意义。
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