Mathematical Problems in Engineering / 2013 / Article / Tab 8

Research Article

A Model for Urban Environment and Resource Planning Based on Green GDP Accounting System

Table 8

Standards for changes in ecological factors as a function of human activities.

Changes in ecological factors
Energy useAgricultureTourismIndustry

HD (−3)
MD (−2)
SD (−1)
R (0)
SI (1)
I (2)
EI (3)

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