Abstract:Actual livestock and poultry breeding capacity was calculated by using area under crops and amount of breeding livestock based on GIS technology and modulation, the changes and spatio-temporal coupling relationship of the livestock and poultry breeding capacity and its volume in Hebei Province in 1994, 2003 and 2013 were analyzed by using crops planting area to calculate the capacity and using polluting coefficient to calculate the volume. The research result revealed that the acreage of crops was increased to 83663hm2, and the areas were mainly concentrated in Chengde and south central plain. The livestock and poultry breeding capacity was increased to 1.087 million in counting of pigs, and the areas were mainly concentrated in Shijiazhuang, Tangshan, Zhangjiakou and other urban areas. The livestock and poultry breeding volume showed a trend of firstly increase and then decrease, which was increased by 11.02 million in counting of pigs. Considering the crops planting area as the only factor absorbing feces, following results could be deduced: there were 69 counties which were overloaded in Hebei Province between 1994 and 2003;94.24% of the counties in Hebei Province were under ecological sustainable redline;overloaded situation was improved between 2003 and 2013, total number of overloaded counties was decreased to 26, which accounted about 18.7% of all counties in Hebei Province, except for Chengde and Tangshan, other areas of livestock and poultry over loaded counties were significantly reduced. Using Ward cluster analysis, coupling features were classified into nine regional types by its volume and changes of crops planting area in Hebei Province from 1994 to 2013. The research results provided decision support for development of livestock and poultry breeding industry and improvement on Beijing-Tianjin-Hebei eco-environment.
