林业经济
林業經濟
임업경제
Forestry Economics
2008年
2期
34~38
,共null页
林德荣 支玲 隋鹏飞 洪家宜
林德榮 支玲 隋鵬飛 洪傢宜
림덕영 지령 수붕비 홍가의
主成分分析 三北防护林工程 社会影响 评价
主成分分析 三北防護林工程 社會影響 評價
주성분분석 삼북방호림공정 사회영향 평개
principal component analysis; Three North Shelterbelt Project; social impact; assessment
在对林业生态工程社会影响评价进行回顾和评论的基础上,建立风沙区防护林体系工程社会影响评价主成分分析模型。以榆林市榆阳区为例,应用主成分分析法,计算出不同时期工程社会影响的综合得分。结果表明,榆阳区＂三北＂防护林工程综合效益呈逐渐增强的良好发展态势。最后指出,动态性和客观性是林业生态工程社会影响综合评价主成分分析模型的两大优点。
在對林業生態工程社會影響評價進行迴顧和評論的基礎上,建立風沙區防護林體繫工程社會影響評價主成分分析模型。以榆林市榆暘區為例,應用主成分分析法,計算齣不同時期工程社會影響的綜閤得分。結果錶明,榆暘區＂三北＂防護林工程綜閤效益呈逐漸增彊的良好髮展態勢。最後指齣,動態性和客觀性是林業生態工程社會影響綜閤評價主成分分析模型的兩大優點。
재대임업생태공정사회영향평개진행회고화평론적기출상,건립풍사구방호림체계공정사회영향평개주성분분석모형。이유림시유양구위례,응용주성분분석법,계산출불동시기공정사회영향적종합득분。결과표명,유양구＂삼북＂방호림공정종합효익정축점증강적량호발전태세。최후지출,동태성화객관성시임업생태공정사회영향종합평개주성분분석모형적량대우점。
Principal component analysis model of social assessment for shelterbelt project in sandy area is established based on reviewing social assessment on forestry ecological project. Taking Yuyang county as an example, this article selects only one component from 16 indexes using principal component analysis, and then the scores of social influence on ＂Three-North＂ shelterbelt project in Yuyang county from 1978 to 2000 can be obtained. The re- salt indicates that although the two great pressures on ecological environment from the rapid increasing of popula- tion as well as livestock year by year, on the whole the comprehensive benefit of ＂Three-North＂ shelterbelt project in yuyang county evolved to a good direction from 1978 to 2000. Finally, it is known that dynamic and objectiveness should be the two main virtues of the principal component analysis model of social assessment for forestry ecological project.
