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Mathematical Problems in Engineering
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Mathematical Problems in Engineering
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2013
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Article
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Tab 8
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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 use
Agriculture
Tourism
Industry
HD (−3)
MD (−2)
SD (−1)
R (0)
SI (1)
I (2)
EI (3)