Abstract：[Background] Ecological risk assessment has been studied by many countries and research scholars. The conventional index of evaluation system is difficult to obtain, which makes ecological risk assessment in some underdeveloped regions infeasible. The constant transformation of land type and structure, the substantial reduction of agricultural land; meanwhile, industrial and mining production emissions of chemicals has caused the environmental degradation in mountainous areas, population explosion, habitat loss, loss of biodiversity, etc. China's current risk assessment borrows from other types of ecological risk assessment system, which does not have an appropriate assessment system, and data collections some evaluation indicators of are too complicated. Thevefore, how to evaluate ecological risk assessment in practice? How to conduct effective ecological risk assessment and benefit of the production and construction? [Methods] Based on the research of ecological risk assessment, we analyzed the system according to sources of risk, risk receptors, exposure and hazard. Taking Beijing as the data source for remote sensing images, combined with GIS tools to analyze Beijing ecological risk level of distribution, selected multiple indicators were analyzed. We also studied key indexes in Beijing ecological risk assessment system, and endowed weights for each indexes, and finally obtained Beijing ecological risk assessment maps. [Results] 1) In densely populated areas, there have a higher ecological risk levels (Moderate risk and High risk) because of its closely related to human activities. 2) Overall, ecological risk level (Mild risk) of northern and western mountain area is higher than those in the southern and the eastern. 3) When two regions have the same ecological risk level, the major sources of risk may be different due to regional characteristics, however, neighborhoods trend to have the same major sources of risk. 4) By building and screening the index and ecological risk assessment system, a reasonable transformation of these indicators for ecological risk assessment system has been fitted in this system. At the same time, combined with the current research progress and soil and water loss investigation, it can be used in other parts of ecological risk assessment model for other areas. [Conclusions] Based on an earlier ecological risk assessment theory, the new ecological risk assessment methods can overcome the shortcomings of traditional single-factor evaluation, comprehensive index evaluation, and conducive to ecological risk assessment for other regions.
李耀明, 王玉杰, 王云琦. 基于GIS的北京地区生态风险评价[J]. 中国水土保持科学, 2017, 15(2): 100-106.
LI Yaoming, WANG Yujie, WANG Yunqi. Ecological risk assessment in Beijing based on GIS. SSWC, 2017, 15(2): 100-106.
EPA. Guidelines for ecological risk assessment[M]. Washington,: D C: USA Office of Water, 1998: 126.
[5]
毛小苓,倪晋仁.生态风险评价研究述评[J].北京大学学报(自然科学版), 2005, 41(4): 646. MAO Xiaoling, NI Jinren. Recent progress of ecological risk assessment [J]. Acta Scientiarum Naturalium, 2005, 41(4): 646.
[6]
付在毅,许学工,林辉平,等.辽河三角洲湿地区域生态风险评价[J].生态学报, 2004, 70(3): 253. FU Zaiyi, XU Xuegon, LIN Huiping, et al. Regional ecological risk assessment of in the Liaohe River Delta wetlands[J]. AC TA ECO LOGICA SIN ICA, 2004, 70(3): 253.
[7]
陈辉,刘劲松,曹宇,等.生态风险评价进展[J].生态学报, 2006,26(5): 1558. CHEN Hui, LIU Jinsong, CAO Yu, et al. Progresses of ecological risk assessment[J]. Acta Ecologica Sinica, 2006,26(5): 1558.
[8]
WILSON R, CROUCH E A C. Risk assessment and comparisons: an introduction[J]. Science, 1987(236): 267.
[9]
BARNTHOUSE L W, BARTELL S M, DEANGELIS D L, et al. Preliminary environmental risk analysis for indirect coal liquefaction[M].Washington: DC, 1982, 26.
[10]
FAVAJ A, ADAMS W J, LARSON R J, et al. Research priorities in environmental risk assessment. Publication of the Society of Environ[J]. Toxicol Chem, 1987(10): 949.
[11]
刘成,王兆印,何耘,等.环渤海湾诸河口潜在生态风险评价[J].环境科学研究,2002,15(5): 33. LIU Chen, WANG Zaoyin, HE Geng, et al. Evaluation on the potential ecological risk for the river mouths around Bohai Bay [J]. Research of Environmental Sciences, 2002,15(5): 33.
[12]
EDWARDJ C, LINDA A B. Performing ecological risk assessment[M]. Lewis:Publishers, 1993:15.
[13]
NATHB. Environmental management[M]. Beijing: Chinese Environmental Sciences Publishing House, 1996:125.
[14]
时宇, 史明昌. 基于 GIS 的北京市水土流失生态风险评价[J]. 生态科学, 2014 (6): 1100. SHI Yu, SHI Mingchang. Ecological risk assessment of soil erosion in Beijing based on GIS[J]. Ecological Science, 2014 (6): 1100.
[15]
国家统计局. 北京市2010年第六次全国人口普查主要数据公报[R/OL]. [2016-10-25]. http://www.stats.gov.cn/tjgb/rkpcgb/qgrkpcgb/t20110428402722232.htm. National Bureau of Statistics. Communiqué of the National Bureau of Statistics of People's Republic of China on Major Figures of the 2010 Population Census of Beijing[R/OL]. [2016-10-25].http://www.stats.gov.cn/tjgb/rkpcgb/qgrkpcgb/t20110428402722232.htm.
2017, Vol. 15 
