资源科学 ›› 2018, Vol. 40 ›› Issue (6): 1277-1286.doi: 10.18402/resci.2018.06.17

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高度敏感生态脆弱区景观可持续性评价

贾慧1,2(), 陈海1,2(), 毛南赵1,2, 聂霞1,2   

  1. 1. 西北大学城市与环境学院,西安 710127
    2. 陕西省地表系统与环境承载力重点实验室,西安 710127
  • 收稿日期:2017-05-19 修回日期:2017-12-03 出版日期:2018-06-25 发布日期:2018-06-22
  • 作者简介:

    作者简介:贾慧,女,山西忻州人,硕士生,主要研究方向为土地利用行为对景观服务的影响。E-mail: jhyx586955@126.com

  • 基金资助:
    国家自然科学基金资助项目(41671086;41271103)

Landscape sustainable development in highly sensitive ecological fragile areas

Hui JIA1,2(), Hai CHEN1,2(), Nanzhao MAO1,2, Xia NIE1,2   

  1. 1. Department of Urban and Resource Sciences, Northwest University, Xi'an 710127, China
    2. Key Laboratory of Surface System and Environmental Carrying Capacity of Shaanxi Province, Xi'an 710127, China
  • Received:2017-05-19 Revised:2017-12-03 Online:2018-06-25 Published:2018-06-22

摘要:

运用熵变分析方法从景观的视角阐明生态脆弱区景观可持续动态演变规律具有重要的理论意义和实践价值。本文基于耗散结构理论和景观复合生态系统理论,以高度敏感生态脆弱区陕西省米脂县高渠乡为例,构建景观可持续评价指标体系,运用信息熵构建研究区景观可持续评价模型,通过计算熵流、熵产生和总熵变,分析研究区2009—2014年间的系统承载力、活力和有序度,探讨研究区的可持续性。研究表明:①建立的景观可持续评价指标体系能够有效地反映景观复合生态系统的功能和演化机制,研究方法可以有效地进行生态脆弱区景观可持续性评价研究;②在2009—2014年间,高渠乡熵流呈减少趋势,熵产生总体上升,总熵变除2012年外,其余年份逐年下降,景观复合生态系统内部朝着健康有序方向发展;③高渠乡可持续总得分呈上升趋势,景观可持续性总体上升。

关键词: 景观可持续性, 熵变分析, 评价, 景观复合生态系统, 陕西省米脂县高渠乡

Abstract:

Scientific evaluation of complex landscape ecosystem sustainable development is important to grasp whether healthy development is occurring. Employing dissipative structure theory to illustrate the evaluation and dynamic evolution of landscape sustainability in ecological fragile areas has important theoretical and practical significance. This study has been carried out by three principal aspects in the process of sustainable evaluation, and a case study was conducted for Gaoqu commune in Mizhi County, an ecological fragile area. First, the evaluation index system of sustainable development of the landscape was formed based on the dissipative structure theory and landscape nature-economy-society complex system theory. Second, the appraisable model of landscape sustainability was set up based on entropy change. Last, input-output entropy, metabolism entropy production and total entropy, three types of information entropy, were calculated to analyze the order, complexity and sustainability of landscapes. We found that the evaluation index system accurately grasps the characteristic of landscapes and is useful for indicating function and complex evolutionary mechanisms. The appraisable model reflects landscape sustainable development. From 2009 to 2014, trends in the input-output entropy of the Gaoqu commune declined, and the metabolism entropy production did not. On the whole, the orderliness degree of the commune increased in a healthy direction. The numerical value of sustainable development in the study area increased, and landscape sustainability is on the rise. Some optimization measures are put forward to promote landscape sustainable development.

Key words: landscape sustainability, theory of entropy analyze, evaluation, integrated ecosystem of landscape, Gaoqu Commune, Mizhi County, Shaanxi Province