Ecological risk assessment based on road network development analysis of Xiamen city, China
Ecological risk assessment based on road network development analysis of Xiamen city, China
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DOI：
10.1080/13504509.2017.1412369
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发表时间：
2018-07
影响因子：
5.6
通讯作者：
Xinyi Yang;Lin Wang;Tong Wu;Q. Qiu
中科院分区：
文献类型：
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作者：
Xinyi Yang;Lin Wang;Tong Wu;Q. Qiu
摘要城市道路网发展在社会经济发展中发挥着重要作用。然而，道路的无限扩张导致了城市景观格局的巨大变化，从而进一步影响了生态系统。为了更好地表征RND的城市生态风险，在本研究中，RND被认为是压力源，而栖息地则是UER评估的终点。根据景观生态学的理论，用生境质量干扰强度(HQDI)来量化RND对城市生态系统的负面影响。特别是，我们的目的是探索RND压力下道路密度与HQDI之间的暴露-反应函数。在厦门市进行了一项个案研究，以检验这种关联。从空间分布来看，发达地区的HQDI值最高，而HQDI值较低的地区大多与郊区有关。此外，HQDIs的概率分布不均匀，城市生态系统对不同类型道路的敏感性不同。基于UER的多层次特征，这一结果为预测RND压力下的UER提供了一个框架，并可能提高风险管理者制定科学控制措施的能力。
ABSTRACT Urban road network development (RND) plays an important role in social and economic evolution. However, the unlimited expansion of roads leads to great changes in urban landscape patterns, which further affect ecosystems. To better characterize the urban ecological risk (UER) of RND, in this study, RND was considered the stressor and habitat provision the assessment endpoint in a UER assessment. According to the theory of landscape ecology, habitat quality disturbance intensity (HQDI) is used to quantify the negative effect of RND on an urban ecosystem. In particular, we aimed to explore the exposure-response function between road density and HQDI under RND stress. A case study was carried out in Xiamen City to examine this association. In terms of spatial distribution, this study showed that developed areas had the highest HQDI values, whereas low HQDI values were mostly associated with suburban areas. In addition, the probability distribution of HQDIs was uneven and the urban ecosystem showed unequal sensitivities to different types of roads. Based on a multilevel characterization of UER, results of this provide a framework to predict UER under RND stress and may enhance the ability of risk managers to develop scientifically based control measures.