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How human activities influence the island ecosystem through damaging the natural ecosystem and supporting the social ecosystem?

机译:人类活动如何通过破坏自然生态系统和支持社会生态系统来影响岛屿生态系统?

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摘要

Island human activities damage the natural ecosystem with unique functions and support the social ecosystem for human survival and living. Identifying, quantifying, and spatially exhibiting the damage and support generated by human activities are of great significance for comprehensively revealing the anthropogenic influences on the island ecosystem and reasonably providing references for island development strategy. In this study, an evaluation model was established in perspectives of damage to the natural ecosystem and support for the social ecosystem. The damage involved geomorphology, landscape, habitat, and pollution, and the support included provision, accommodation, transportation, and recreation. The evaluation model was realized on the basis of the island use types, size effects, utilization levels, and change processes. Two new indices, namely, natural ecosystem damaged index (NEDI) and social ecosystem supported index (SESI), were proposed to represent the damage and support, respectively. Thereafter, scenario analysis was adopted to simulate the variations of NEDI and SESI in different scenarios of human activities and to provide references for the island development strategy. A total of ten islands in the Dongtou Archipelago in South China were used as the study area to demonstrate the model. Results indicated that the high NEDI and SESI areas were distributed in building, industrial, road, and reclamation areas, whereas the low NEDI and SESI areas were mainly located in vegetation areas and bare land. In different scenarios, the expansions of the road and building land generated much more damage than support, and the improvement of the utilization level produced more support than damage. The prohibition and limitation of island use types with low efficiency, the enhancement of vegetation restoration, the adequate use of reclamation area, the control of disordered exploitation expansion, and the improvement of utilization levels should be the strategies used by the Dongtou Archipelago for sustainable development. The application of the model validated its effectiveness and applicability in revealing the overall and spatial characteristics of the damage and support for islands and other coastal areas with intensive human activities. (c) 2019 Elsevier Ltd. All rights reserved.
机译:岛屿的人类活动以独特的功能破坏了自然生态系统,并为人类的生存和生活提供了社会生态系统的支持。对人类活动产生的破坏和支持进行识别,量化和空间展示,对于全面揭示人为因素对岛屿生态系统的影响,并合理地为岛屿发展战略提供参考具有重要意义。在这项研究中,从对自然生态系统的破坏和对社会生态系统的支持的角度建立了评估模型。破坏涉及地貌,景观,栖息地和污染,支持包括提供,住宿,运输和娱乐。评价模型是根据岛屿的使用类型,规模效应,利用水平和变化过程而实现的。提出了两个新的指标,分别代表自然生态系统破坏指数(NEDI)和社会生态系统支持指数(SESI)。此后,通过情景分析来模拟NEDI和SESI在人类活动的不同情景中的变化,并为岛屿发展战略提供参考。以华南洞头群岛中的十个岛屿为研究区域来演示该模型。结果表明,NEDI和SESI较高的区域分布在建筑,工业,道路和填海区,而NEDI和SESI较低的区域则主要分布在植被和裸地。在不同的情况下,道路和建筑用地的扩展所产生的破坏多于支持,而利用水平的提高所产生的支持多于破坏。禁止和限制低效岛屿利用类型,加强植被恢复,适当开垦土地,控制无序开发利用和提高利用水平,应成为洞头群岛可持续发展的战略。 。该模型的应用验证了其在揭示人类密集活动对岛屿和其他沿海地区的破坏和支持的总体和空间特征方面的有效性和适用性。 (c)2019爱思唯尔有限公司。保留所有权利。

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