自然资源学报

自然资源学报 ›› 2007, Vol. 22 ›› Issue (4): 507-515.doi: 10.11849/zrzyxb.2007.04.002

• 资源利用与管理 • 上一篇    下一篇

不同资源环境梯度下吉林西部生态经济系统能值分析

王明全1,2, 王金达1, 刘景双1   

  1. 1. 中国科学院东北地理与农业生态研究所, 长春 130012;
    2. 中国科学院研究生院, 北京 100049
  • 收稿日期:2006-12-26 出版日期:2007-08-25 发布日期:2007-08-25
  • 作者简介:王明全(1982-),男,山东淄博人,博士研究生,主要从事生态承载力、生态安全方面的研究。
  • 基金资助:

    国家重点基础研究计划资助项目(2004CB418507)

Emergy Analysis of the Eco-economic Systems of West Jilin Province According to the Resource and Environment Gradient

WANG Ming-quan1,2, WANG Jin-da1, LIU Jing-shuang1   

  1. 1. Northeast Institute of Geography and Agricultural Ecology, CAS, Changchun 130012, China;
    2. Graduate University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2006-12-26 Online:2007-08-25 Published:2007-08-25

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被引次数

47 | 4

摘要： 利用能值方法,从东南—西北方向选取吉林西部长岭、乾安、大安、镇赉四县市进行不同资源环境梯度下生态经济系统演变的对比分析。结果表明1989—2001年研究区多项能值指标差异明显:①系统稳定性方面,降水相对较多的长岭和乾安稳定性强于镇赉和大安。能值密度及能值投入率为长岭>乾安>大安>镇赉。能值产出以及能值积累量呈增大趋势,增幅长岭>乾安>大安>镇赉;②系统产出结构变化显著,虽然种植业比例有所下降,但一直是长岭、乾安的主导产业,镇赉、大安畜牧业超过种植业成为主导产业,系统平均能值产出率为长岭(1.89)<乾安(1.96)<大安(1.99)<镇赉(2.29);③环境负载率长岭<乾安<大安<镇赉,可持续发展指数则相反;④资源环境条件尤其是降水是该区生态经济系统状态的重要影响因素。

关键词: 农牧交错带, 生态经济系统, 能值分析, 波动, 吉林西部

Abstract: On the basis of emergy method,this paper chose four regions in west Jilin province,Changling,Qian’an,Da’an and Zhenlai from southeast to northwest,to make a contrasting analysis of the eco-economical dynamics according to resource and environment gradient.The results indicated that the emergy indices were varying noticeably between the study sites.1)Stability of the systems.Agro-ecosystem functions here fluctuated obviously with rainfall,but Changling and Qian’an had a relatively more stable agriculture than that in Zhenlai and Da’an.Benefited from the stability,there was an increasing trend of emergy density(ED)and emergy investment ratio(EIR)from Zhenlai to Changling.Correspondingly,from 1989 to 2001 Changling enabled the largest scale-up of emergy harvest and emergy accumulation of all,followed by Qian’an,Da’an and Zhenlai.2)Emergy yield structures.Though experienced a declining proportion,crop still contributed most to the total emergy harvest in Changling and Qian’an.As to Zhenlai and Da’an,stockbreeding have played a dominating role in recent years since the crop yield suffered heavy consequences of rainfall scarcity.As a whole,the average emergy yield ratio(EYR)appeared to be Changling(1.89)Qian’an>Da’an>Zhenlai while environmental sustainability index(ESI)varied oppositely.It was higher economic stress that led weak sustainability of the agro-ecosystems in Changling and Qian’an,but Da’an and Zhenlai had a lower level and more unstable economy mainly for the reason of resource scarcity.4)Based on what mentioned above it could be concluded that natural resources and environmental conditions,especially rainfall,was of great significance to the well-run of eco-economic system in west Jilin province.

Key words: ecotone between agriculture and animal husbandry, eco-economic system, emergy analysis, fluctuation, west Jilin province

中图分类号: 

  • Q148