A method of identifying priority spatial patterns for the management of potential ecological risks posed by heavy metals
A method of identifying priority spatial patterns for the management of potential ecological risks posed by heavy metals
复制标题
确定重金属潜在生态风险管理优先空间模式的方法
DOI：
10.1016/j.jhazmat.2012.08.044
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发表时间：
2012-10-30
影响因子：
13.6
通讯作者：
An, S. Q.
中科院分区：
文献类型：
--
作者：
Fang, S. B.;Jia, X. B.;An, S. Q.
提出了一种针对不同重金属生态风险水平的优先空间格局识别方法。首先，将基于ndvi的评价与人为影响源的影响评价相结合，圈定生态热点；其次，计算HM潜在生态风险指数（PERI）并进行空间插值。最后，通过逻辑计算，识别出具有不同pi值的EH。研究结果显示，45.2%的研究区域HM风险较低。53.2%为中度HM风险，仅1.6%为高HM风险。此外，EH低HM风险的比例为6.5%；中度HM风险的比例为5.4%；HM高风险的比例为0.4%。建议将具有中低HM生态风险的EH作为重点治理区域。该方法对世界范围内的HM生态风险评估和HM污染管理具有潜在的实用价值。(C) 2012 Elsevier B.V.版权所有
An approach of identifying priority spatial patterns in response to different ecological risk levels associated with heavy metals (HM) is proposed. First, ecological hotspots (EH) are delineated by integrating NDVI-based assessment with the impact assessment of anthropogenic impact sources. Second, the HM potential ecological risks index (PERI) is calculated and spatially interpolated. Finally, the EH with different PERI values are identified through logic calculation. Study results show that 45.2% of the study region has low HM risks. 53.2% with moderate HM risks, and only 1.6% with high HM risks. In addition, the percentage of EH with low HM risks is 6.5%; the percentage with moderate HM risks is 5.4%; and the percentage with high HM risks is 0.4%. The EH with low and moderate HM ecological risks are proposed to be the regions in priority for management. This approach is potentially useful to HM ecological risk assessment and HM contamination management around the world. (C) 2012 Elsevier B.V. All rights reserved.