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Journal of Desert Research ›› 2021, Vol. 41 ›› Issue (3): 235-244.DOI: 10.7522/j.issn.1000-694X.2021.00065

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Emergy-based comparison on sustainable development of villages with different farming and pastoral ratios in Horqin Sandy Land

Dan Han1,2(), Yulin Li1(), Jin Zhan1,2, Hongling Yang1,2   

  1. 1.Northwest Institute of Eco-Environment and Resources,Chinese Academy of Sciences,Lanzhou 730000,China
    2.University of Chinese Academy of Sciences,Beijing 100049,China
  • Received:2021-03-27 Revised:2021-05-13 Online:2021-05-26 Published:2021-05-26
  • Contact: Yulin Li

Abstract:

In order to evaluate and compare the development sustainability of natural villages with different production and management models in Horqin Sandy Land, this study uses emergy analysis methods to quantitatively analyze the emergy input of natural villages in two production and management models, mainly planting and breeding. And output conditions, establish an emergy analysis indicator system to evaluate the sustainability of the two model systems. The results show that in terms of resource input, the external auxiliary energy of villages with different agricultural and pastoral structures in Horqin Sandy Land accounted for about 39.17% of the total emergy input, indicating that the two production and operation models rely less on external resources and have a high emergy self-sufficiency rate; In a system dominated by planting, non-renewable resources account for more than renewable resources, while in a system dominated by animal husbandry, the opposite is true. This shows that the environmental carrying rate of the animal husbandry-based development model is lower than that of the planting-based development model; by comparing the net emergy output rates of the two production and management models, the animal husbandry-based production system is greater than The production system dominated by planting industry shows that the animal husbandry production system in the region has the characteristics of low input and high output, while the planting industry has the characteristics of high input and low output; the sustainability index of the two models is less than 1. It shows that the rural sustainable development capacity of Horqin Sandy Land is low. However, the sustainable development index of Mandulahu Village, which is dominated by animal husbandry, is higher than that of Angnai Village, which is dominated by planting, indicating that the livestock-based industry has good self-organization and stability. This is the rural ecology of Horqin Sandy Land- Social-economic development provides reference cases.

Key words: Horqin Sandy Land, ratio of agriculture and animal husbandry, villages, emergy analysis, sustainability

CLC Number: