Research of Ecological Carrying Capacity ---Comprehensive Evaluation Model

AbstractThe indicators of ecological carrying capacity---comprehensive evaluation model was deeply analyzed and studied. Combining with the demand of sustainable development, introduce the advantages and disadvantages of ecological carrying capacity---comprehensive evaluation model. The indicator system, weight definition and data acquisition of the comprehensive evaluation model is analyzed deeply, and then propose three suggestions of them in hopes of objective assessment of ecological sustainable development in new period

catena-Poly[[bis­[2-(2-pyrid­yl)-1-H-imidazole-κ2 N 2,N 3]cadmium]-μ-benzene-1,3-dicarboxyl­ato-κ2 O 1:O 3]

In the title coordinaltion polymer, [Cd(C8H4O4)(C8H7N3)2]n, the CdII atom, lying on a twofold rotation axis, is six-coordinated by two carboxyl­ate O atoms from two benzene-1,3-dicarboxyl­ate (m-BDC) ligands and four N atoms from two chelating 2-(2-pyrid­yl)imidazole mol­ecules, forming a slightly distorted octa­hedral geometry. The m-BDC ligand is located over a twofold rotation axis. The CdII atoms are bridged by the m-BDC ligands, leading to a wave-shaped chain structure along [010]. N—H⋯O hydrogen bonds connect the chains