Gray-relation Analysis of Animal Husbandry Economy Influenced by Cropland Conversion and Grazing Prohibition in Yuanzhou District of Ningxia Region

LIU Yan-hua1,SONG Nai-ping2,WANG Lei1,TAO Yan-ge1(1.School of Resources and Environmental Science,Ningxia University,Yinchuan, Ningxia 750021,China;2.United Research Center for Exploitation of Biological Resources and Ecology in Western China,Ningxia University,Yinchuan,Ningxia 750021,China)

cropland conversion and grazing prohibition;Yuanzhou District of Ningxia Hui Autonous Region;animal husbandry economy;gray-relation analysis

The situations of animal husbandry development and farmer income and the income from animal husbandry before and after the changes of ecological polices in the Yuanzhou District of Ningxia Hui Autonous Region in the recent ten years are analyzed with gray-relation analysis method.Analyses indicate that the relative growth of the income from animal husbandry is higher than that of the net farmer income.The proportion of the income from animal husbandry to the total agricultural output rises increasingly.The functions of promoting farmer income and national economy growth have been strengthened.The gray-relation analysis method is applied to the study of the main factors influencing animal husbandry economic system.Results further show that the increased inputs of feed,labor,fund,technology and policy support bring the greater changes in the correlation factors affecting animal husbandry economic system.The changes are analyzed separately.