海南岛天然林生态系统不同人类胁迫图论分析
A Graph-theoretic Analysis of Relationships among Anthropogenic Stressors on Natural Forest in Hainan Island
查看参考文献8篇
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文摘
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不同人类活动方式所造成胁迫因素通过错综复杂的交互作用共同影响着海南岛天然林生态系统健康.论文通过图论分析法将各种胁迫间交互作用关系矩阵化,然后通过矩阵计算分析它们问的内在联系,有助于把不同胁迫间错综复杂的交互作用关系简明化.图论分析结果表明旅游娱乐业、森林火灾、经济林种植、热带农业、木材砍伐等不仅影响力大,而且敏感性高,应该作为不同胁迫因素间交互作用分析中重点关注的胁迫因素;胁迫因素集合中存在强连通性子集,对子集中任何一种胁迫因素所造成的风险评价都需要考虑其对或受到集合中其它胁迫因素的影响.不同胁迫相互作用关系中,协同增大效应占主导地位,可能通过协同效应加大对天然林生态系统的不利影响. |
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其他语种文摘
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The natural forest (NF) in Hainan Island is menaced by various anthropogenic stressors.These stressors interactively and cornbinedly threaten the viability and integrity of NF. The method of graph-theoretic analysis can transform the interactions thkt occur within the suite of stressors to matrix and analyse their internal relationships by matrix calculating. These efforts can help to simplify the reticula interactions within the various stressors. The results of graph-theoretic analysis show that there exist quite a number of interactive linkages among different anthropogenic stressors for NF in Hainan Island, some stressors such as tourist/recreation, forest fire, economic forest, tropical agriculture and timber harvest should be taken as key factors in analysing interactions between different stressors. In the stressors set, there are strong components ( water project, road building, mining, high-tension power line, noise pollution, air pollution, forest fire, economic forest, tropical agriculture, stock raising, timber harvest, tourisb'recreation , exotic species),and ecological risk assessment on any stressors in the strong components should consider their influences on or by other stressors.The predominant effect of interactive relationshipswithin different stressors is a reinforcing one,so there maybe exist resonance effects among different stressors that increase the negative influences on NF.The method of graph-theoretic analysis would help valuators to understand the manners of interactions among different stressors more clearly,and it could be used as an effective tool in ecological risk assessment. |
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来源
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自然资源学报
,2009,24(1):154-161 【核心库】
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关键词
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生态学
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交互作用关系
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图论分析
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天然林生态系统
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人类胁迫
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地址
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1.
中国科学院,科技政策与管理科学研究所,社会与可持续发展研究室, 北京, 100080
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中国科学院生态环境研究中心, 区域与城市生态国家重点实验室, 北京, 100085
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中国科学院,南京土壤研究所, 江苏, 南京, 210008
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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1000-3037 |
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学科
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普通生物学 |
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基金
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国家自然科学基金创新研究群体项目
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国家科技攻关计划项目
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文献收藏号
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CSCD:3515792
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