supported by National Natural Science Foundation of China(Grant No.40171001);National Science and Technology Support Program(Grant No.2006BAB15B02-04);Key Fundamental Item of Hebei Province(Grant No.08966712D);Key Discipline Construction Item of Physical Geography of Hebei Province
In the past,evaluations of ecosystem functions were mostly based on Costanza's model,whereas the spatial,quality and temporal characteristics of regional ecosystems were not considered in the model.Focusing on these i...
Under the auspices of the National Natural Science Foundation of China (No. 40171001)
This paper researches the ecological sustainability of Zhangjiakou City, Hebei Province, China, using the ecological footprint model. According to the study we find that Zhangjiakou City was in the situation of ecolog...
The authors would like to greatly thank the National Natural Science Foundation of China(No.40171001 and No.40571117);the grant of the Knowledge Innovation Program of the Chinese Academy of Sciences(approved # KZCX3-SW-338);National High Technology Research and Development Program of China(No:2003AA131170)which founded this research.
Land degradation is one of the serious environmental problems that can lead to poverty, and is especially prominent in eco-fragile areas in developing countries and increases the risk of environmental safety. North He...