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| Quantitative analysis of environmental constraints in China's animal husbandry industry based on land environmental carrying capacity and ecological footprint |
| Received:February 01, 2021 |
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| KeyWord:animal husbandry;environmental constraints;land carrying capacity;ecological footprint;quantitative analysis |
| Author Name | Affiliation | E-mail | | XIONG Xuezhen | Institute of Agricultural Economics and Development, Chinese Academy of Agricultural Sciences, Beijing 100081, China | | | YANG Chun | Institute of Agricultural Economics and Development, Chinese Academy of Agricultural Sciences, Beijing 100081, China | yangchun@caas.cn | | YU Lin | Institute of Agricultural Economics and Development, Chinese Academy of Agricultural Sciences, Beijing 100081, China | |
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| Abstract: |
| The purpose of this study is to determine the environmental constraints of animal husbandry in the context of high-quality development and to quantitatively analyze these constraints based on two aspects:land environmental carrying capacity and ecological environmental carrying capacity, and further clarify the environmental constraints in China's animal husbandry industry over time and space using differentiation characteristics and the matching degree of scale of breeding and demand with the land and ecological environment. This study used the nutrient balance method and the three-dimensional ecological footprint model to calculate the land environmental carrying capacity and the ecological environmental carrying capacity of the animal husbandry industry, and analyzed the temporal and spatial characteristics, respectively. The results showed that from 2001 to 2018, the land environmental carrying capacity of pigs increased by 45.21%, the land environmental carrying capacity index decreased by 36.07%, and the land environmental carrying capacity for the animal husbandry industry improved significantly. The per capita ecological footprint of animal husbandry industry and the ecological carrying capacity increased by 22.81% and 42.96% respectively, and the ecological carrying capacity showed a trend of relaxation. However, as of 2018, the ecological footprint was still as high as 2.46 times the carrying capacity, and the ecological deficit was 2.08×108 hm2. From a comprehensive two-dimensional perspective, China's animal husbandry industry was still exerting severe pressure on the ecological environment, and the imbalance of environmental constraints between regions was highly significant. Land environmental constraints were low for southern and northern areas, ecological environment constraints were low for eastern and western areas, and the ecological environment exerted the highest pressure in the southeast coastal areas. The results show that the environmental constraints associated with the animal husbandry industry in China are severe but easing, the land environmental constraints are notably improved, but the ecological environmental constraints are still poor and these are generally more important than the land environmental constraints and have been neglected for a long time. |
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