PROGRESS IN GEOGRAPHY ›› 2005, Vol. 24 ›› Issue (6): 1-7.doi: 10.11820/dlkxjz.2005.06.001

• Original Articles •     Next Articles

Scientific Basis and Working Frame for Regional Ecological Security Research

ZHANG Baiping, YAO Yonghui, ZHU Yunhai, XU Juan   

  1. State Key Lab for Resource and Environment Information System, IGSNRR, CAS, Beijing 100101
  • Received:2005-08-01 Revised:2005-10-01 Online:2005-11-25 Published:2005-11-25

Abstract:

Study of ecological security involves multiple scales of species, ecosystem, watershed, region, and country. Regional ecological security(RES) serves as the basis of sustainable regional and national development, as the prerequisite for establishing harmonious and environment-friendly society, and as the essence of human ecological security. RES should thus be the focus of ecological security. The hitherto study of RES has been concentrated on comprehensive assessment of multiple indexes, species or ecosystem security, and the effect of land use and land cover changes. A scientific basis for determining the degree of RES is still lacking. This paper argues that geographical zonation should be considered the first principle for studying RES; the virginal value of landscape (or land type) may act as the objective criterion of RES; and the degree of deterioration of landscape as the major index of RES. Geographical zonation, the virginal value of landscape, and the degree of deterioration of landscape together constitute the scientific foundation for studying RES. The working frame for studying RES may include (1) quantifying the virginal value of landscape; (2) determining the degree of deterioration of landscape; (3) analyzing regional deteriorated landscape pattern; (4) considering the ecological effect of neighboring areas; (5)creating the diagnosing model for RES; and (6)selecting indexes of RES according to the RES diagnosing model.

Key words: deteriorated landscape, regional ecological security (RES), virginal ecology