珠海市陆域空间生态敏感性评价与生态安全对策
Ecosystem sensitivity assessment and corresponding ecological security countermeasures for Zhuhai land space
查看参考文献33篇
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文摘
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为了明确珠海市特定生态环境问题可能发生的区域与程度,预防并采取针对性保护措施,对珠海市陆域空间进行以土壤侵蚀、地质灾害、生物多样性为评价指标的综合生态敏感性评价。结果表明:1)珠海市单因子敏感性和综合生态敏感性均以不敏感、轻度敏感区为主,中度敏感、高度敏感区较少,生态系统对抗自然环境变化的能力较强;2)高度敏感区集中于珠海东部的城市中心区(香洲区)、淇澳岛、横琴岛及珠海西部的工业区及大型山体,中度敏感区集中于香洲区与斗门区,不敏感和轻度敏感区集中于斗门区与金湾区;3)高度敏感区与人类活动密集及活跃区域的重合度较高,不恰当的开发建设极易扰动生态系统稳定。研究表明,各敏感区应实施不同生态安全对策,即高度敏感区应严格保护,中度敏感区应控制保护,轻度敏感与不敏感区应协调保护。 |
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其他语种文摘
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In order to investigate the susceptibility of the ecosystem to the natural hazards and thus to prevent and solve environmental problems, this paper intends to be engaged in an ecosystem sensitivity assessment and offering corresponding eco-security countermeasures for Zhuhai land space. In this paper, we have put our stress on the investigation of the individual factors and the comprehensive ecosystem sensitivity in Zhuhai land space. To accomplish our research task, we have adopted a digital elevation model, a land use & land cover map while keeping in mind the daily rainfalls, biodiversity, the soil texture and soil type of the study area, meanwhile we have graded the single factor ecosystem sensitivity of the soil erosion, the geological hazard and biodiversity based on the evaluation criteria. The results of the above-mentioned evaluation let us make the following comprehensive ecosystem sensitivity scores by averaging the weighted sum of the three single factor sensitivity scores with the weights mainly gained by Delphi method in reference to other related literatures. In so doing, we have graded ecosystem sensitivity into four grades, that is non-, low-, moderate and high sensitivity. The conclusive evaluation results demonstrate that: (1) Of all the land areas under the evaluation, the ecosystem status in-situ can mainly be classified into non-sensitive and low sensitive levels and the other is at moderate and high sensitive levels, which indicates the less susceptibility of ecosystem to natural hazards. (2) Land pieces of high ecological sensitivity are mainly located in the central urban areas (mainly in Xiangzhou District), Qi'ao Island, Hengqin Island in the eastern Zhuhai, and the industrial zones in the high mountainous areas of western Zhuhai. Whereas the moderate sensitivity areas are mainly in Xiangzhou and Doumen District, the non- and low-ecosystem sensitivity areas stand mainly in Doumen and Jinwan District. (3) The high ecosystem sensitivity areas coincide with the intensive human activities, which imply that the more activities there were in the improper constructions, the more vulnerable the ecosystem stability becomes. (4) Different protective measures should be taken for different eco-sensitive areas. That is to say, the strict, controlled and coordinated protective measures are to be taken to the high-, moderate- and low-/non- sensitivity areas in the areas. Specifically speaking, the high ecosystem sensitivity areas should not be allowed to develop any special urban construction items. Thus, it can be seen that the study results of this paper are expected to provide a new scientific basis for natural hazard control and future urban development and planning for the city of Zhuhai. |
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来源
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安全与环境学报
,2016,16(3):354-360 【核心库】
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DOI
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10.13637/j.issn.1009-6094.2016.03.069
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关键词
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环境科学技术基础学科
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生态敏感性评价
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生态安全
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陆域空间
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珠海市
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地址
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1.
中国科学院广州地球化学研究所, 广州, 510640
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广东省生态环境与土壤研究所, 广州, 510650
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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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1009-6094 |
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学科
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环境质量评价与环境监测 |
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基金
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国家自然科学基金项目
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广东省中国科学院全面战略合作项目
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文献收藏号
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CSCD:5738235
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