摘要
为评估和比较科尔沁沙地不同生产经营模式自然村落的发展可持续性,通过能值分析方法,定量分析了分别以种植业和养殖业为主的2个自然村落的能值投入与产出情况,建立能值分析指标体系,对2种模式系统的可持续性进行评估。结果表明:在资源投入方面,村落外部辅助能约占总能值投入的39.17%,说明2种生产经营模式对外部资源依赖较小,能值自给率高;在以种植业为主的系统内,不可更新资源占比大于可更新资源,而以畜牧业为主的系统内部则相反。这说明,以畜牧业为主发展模式的环境承载率低于以种植业为主的发展模式;以畜牧业为主的生产系统净能值产出率大于以种植业为主的生产系统,说明在该区域畜牧业生产系统具有低投入、高产出的特点,而种植业则具有高投入、低产出特点;2种模式的可持续指数均小于1,说明科尔沁沙地农村可持续发展能力低。以畜牧业为主的村落可持续性发展指数大于以种植业为主的村落,说明以养殖业为主具有良好的自组织性和稳定性,这为科尔沁沙地农村生态-社会-经济发展提供参考案例。
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.
作者
韩丹
李玉霖
詹瑾
杨红玲
Han Dan;Li Yulin;Zhan Jin;Yang Hongling(Northwest Institute of Eco-Environment and Resources,Chinese Academy of Sciences,Lanzhou 730000,China;University of Chinese Academy of Sciences,Beijing 100049,China)
出处
《中国沙漠》
CSCD
北大核心
2021年第3期235-244,共10页
Journal of Desert Research
基金
中国科学院A类战略性先导科技专项(XDA23060404)
内蒙古自治区科技重大专项(2019ZD00704)
国家重点研发计划项目(2016YFC0500907)。
关键词
科尔沁沙地
农牧比例
村落
能值分析
可持续性
Horqin Sandy Land
ratio of agriculture and animal husbandry
villages
emergy analysis
sustainability
