摘要
土地整理生态效益评价对土地整理科学决策具有极其重要的意义。部分土地整理活动由于缺乏生态效益的规范和约束而影响了土地资源的可持续利用。该文阐述了土地整理内容,分析了生态效益评价在土地整理中的地位,通过对土地整理效应特征和边界的辨析,以能值理论为基础,提出了以自然环境系统的无偿能值投入变化量为表征的土地整理生态效益评价方法,构建了土地整理生态效益的评价公式。
Benefit assessment is the prerequisite for making scientific policy of land consolidation. Some practices severely affected the sustainable using of land resources for shortage of the standard and restraint of ecological benefit. This paper analyzed the concept and the items of land consolidation and discussed the important role of ecological benefit assessment. Through the identification of effect boundary of land consolidation and based on the emergy theory, this paper proposed a method to assess the ecological benefit of land consolidation which took the quantitative change of free emergy investment from natural ecosystem to product or service as a token of ecological benefit of land consolidation. Also the assessment formulas were established.
出处
《农业工程学报》
EI
CAS
CSCD
北大核心
2004年第5期275-280,共6页
Transactions of the Chinese Society of Agricultural Engineering
基金
国土资源部行政事业专项研究"土地整理潜力与效益分析研究方法研究"项目
关键词
土地整理
生态效益
能值分析方法
land consolidation
ecological benefit
emergy analysis method
