黄河流域下游德州地区地下水污染调查研究     

颜翠翠  李爱敏  刘洪义  赵季初  王龙春  李汉东  郭静 《地质论评》2023,69(Z1):507-508

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Continental subduction drives the Himalayan orogen: Insights from geodynamic numerical modeling     

Rui Q  Jie Liao  Rui Gao 《《地质学报》英文版》2018,92(Z1):51-51

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Occurrence of phthalate esters around the major plastic industrial area in southern Taiwan     

Acharee Kaewlaoyoong  Chi Thanh Vu  Chitsan Lin  Chien Sen Liao  Jenq-Renn Chen 《Environmental Earth Sciences》2018,77(12):457

The increasing usage and disposal of plastic products could cause the wide distribution of phthalate esters (PAEs) in various environmental media. In this study, six PAE compounds, namely dimethyl phthalate, diethyl phthalate, di-n-butyl phthalate, benzyl butyl phthalate, di(2-ethylhexyl) phthalate (DEHP), di-n-octyl phthalate, were analyzed in various samples collected from the major plastic industrial area of southern Taiwan, including soil, fertilizer and plastic products, for the purposes of identifying of the possible sources of PAEs and assessing the related health risk. The results show that PAEs in soil samples was dominated by DEHP, with the total concentrations in the range of 0.7?±?0.5, 0.2?±?0.1, and 0.3?±?0.2 mg kg^?1 for soil samples from farmland, household back gardens and the roadside, respectively. Contents of PAEs in chemical fertilizer (ND—0 0.87 mg kg^?1) were higher than that in organic fertilizer (ND—0.08 mg kg^?1), and PAEs concentrations (ND—316 mg kg^?1) in plastic mulching films were much less than those in the other types of plastic products (ND—1719 mg kg^?1), implying that major sources of PAEs in agricultural soil could be the use of chemical fertilizer and plastic products other than plastic mulching films. Health risk assessment suggested that, via the exposure to PAEs in soil, the potential non-cancer and carcinogenic risks for adults and children are minimal in most cases, except that a “moderate” carcinogenic risk for children exposure to DEHP. The results of this study can serve as a reference for further pollution prevention and environmental protection plans in relation to the industrial operation and discharge as well as the farming practices.  相似文献   

Debris flow hazard assessment at Dongmatun Village in Laomao mountainous area of Dalian,Northeast China     

Shiwei Shen  Wenwang Liao  Lei Nie  Yan Xu  Min Zhang 《Arabian Journal of Geosciences》2018,11(20):648

After a heavy and continuous rainfall from July 27 to 28, 1981, geological disasters involving large debris flow affected the northern part of Wafangdian City and Pulandian City in Dalian, northeast China, and caused considerable loss of life and property. In recent years, precipitation has continued to increase significantly in Dalian, where the largest debris flow gully, named the Dongmatuncun main ditch, is situated. The Dongmatuncun main ditch is 2 km away from the north side of the right bank of the Fudu River in Wanjialing, Wafangdian City. The geomorphological and hydrological conditions, combined with the characteristics of the debris flow solid source, are conducive to debris flow development. Moreover, with an increase in rainfall, debris flow recurrence becomes increasingly likely. We study the debris flow gully in Dongmatun Village by analyzing the formation conditions through field survey. Fuzzy comprehensive evaluation and analytic hierarchy process are used to evaluate the risk of debris flow. Results indicate that the debris flow gully in Dongmatun Village is highly dangerous and debris flow occurs during heavy rainfall. In addition, the breakout of debris flow can threaten human life and property.  相似文献   

Climatic effects of air pollutants over china: A review   总被引：3，自引：0，他引：3  

Hong Liao  Wenyuan Chang  Yang Yang 《大气科学进展》2015,32(1):115-139

Tropospheric ozone(O3) and aerosols are major air pollutants in the atmosphere. They have also made significant contributions to radiative forcing of climate since preindustrial times. With its rapid economic development, concentrations of air pollutants are relatively high in China; hence, quantifying the role of air pollutants in China in regional climate change is especially important. This review summarizes existing knowledge with regard to impacts of air pollutants on climate change in China and defines critical gaps needed to reduce the associated uncertainties. Measured monthly, seasonal, and annual mean surface-layer concentrations of O3 and aerosols over China are compiled in this work, with the aim to show the magnitude of concentrations of O3 and aerosols over China and to provide datasets for evaluation of model results in future studies. Ground-based and satellite measurements of O3 column burden and aerosol optical properties, as well as model estimates of radiative forcing by tropospheric O3 and aerosols are summarized. We also review regional and global modeling studies that have investigated climate change driven by tropospheric O3and/or aerosols in China; the predicted sign and magnitude of the responses in temperature and precipitation to O3/aerosol forcings are presented. Based on this review, key priorities for future research on the climatic effects of air pollutants in China are highlighted.  相似文献   

A new method for parameter estimation in nonlinear dynamical equations     

Liu Wang  Wen-Ping He  Le-Jian Liao  Shi-Quan Wan  Tao He 《Theoretical and Applied Climatology》2015,119(1-2):193-202

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On the applicability of satellite SAR interferometry to landslide hazards detection in hilly areas: a case study of Shuicheng,Guizhou in Southwest China     

Wang  Yian  Liu  Donglie  Dong  Jie  Zhang  Lu  Guo  Jincheng  Liao  Mingsheng  Gong  Jianya 《Landslides》2021,18(7):2609-2619

Landslides - SAR Interferometry (InSAR) has been proven to be effective for measuring landslides deformation. However, the InSAR application of landslide mapping is limited by the blind observation...  相似文献   

蒸发背景沉积序列精细刻画及沉积学解译:以鄂尔多斯盆地中部中奥陶统马五₆亚段为例^*     

黄道军  钟寿康  张道锋  王保保  廖建初  谢康  卢子兴  谭秀成 《古地理学报》2021,23(4):735-755

云膏共生组合是受化学沉积分异作用控制而形成的岩石组合,对其沉积序列精细刻画,有利于揭示诸多蒸发环境下的沉积学信息。依据鄂尔多斯盆地中部奥陶系马家沟组五段6(简称“马五₆亚段”)亚段钻井、岩心资料,开展了岩石宏观和微观观察、典型沉积序列刻画等工作。研究结果表明: (1)鄂尔多斯盆地中部马五₆亚段普遍发育碳酸盐岩与蒸发岩共生组合,主要由10种岩石类型构成;(2)主要发育5种沉积序列,下云上膏的岩性组合和序列顶部多发育暴露面等特征表明单个序列具有向上变浅、变咸的演化特征,是蒸发台地叠合海水渐次补给作用的结果;(3)在局限—蒸发台地环境下,主要发育潟湖/滩间海、颗粒滩、灰泥丘、台坪4种沉积亚相及11种沉积微相,与经典的蒸发潮坪序列在岩性组合与沉积构造方面存在明显的差异;(4)马五₆亚段沉积期发育2次海平面升降,沉积环境可分别对应于云(膏)质潟湖—灰泥丘/颗粒滩—膏质潟湖—蒸干膏质潟湖和灰泥丘/颗粒滩—膏质潟湖—蒸干膏质潟湖—台坪。该研究结果可为鄂尔多斯盆地马五₆亚段沉积环境与海平面变化研究提供系统的岩石学证据。  相似文献   

苏里格气田苏14井区中二叠统下石盒子组盒7段有效储层综合评价     

陈罗元  钱玉贵  廖璐瑶  欧居刚  魏千盛  周怀来 《矿物岩石》2021,41(2):109-117

苏14区块盒7段是苏里格气田的次产层,研究程度低,为探明其储量规模,结合测井资料和试气产量,对盒7段有效储层进行综合评价,为下一步开发提供决策支持.本次研究利用经验公式和回归分析方法建立了泥质含量、孔隙度、渗透率、含气饱和度的测井解释模型;基于储层参数与试气产量的交会分析,确定盒7段有效储层参数下限标准;采用灰色关联法建立研究区盒7段储层评价标准,对研究区盒7段储层进行了分类评价和有效储层评价.研究表明,盒7段储层可分为3类,其中Ⅰ类储层占比13.89％,Ⅱ类储层占比42.25％,Ⅲ类储层占比43.86％;盒7段有效储层发育区的面积合计约28.6 km2,呈现出滩坝状的发育特征,表明盒7段储层质量不高.该成果可为苏14区块下一步开发提供依据.  相似文献   

广西天气气候对人体健康的影响     

黄雪松  廖雪萍  谢敏  徐圣璇  朱秋宇 《气象研究与应用》2019,40(1):42-45

采用广西多年季、月、旬平均气温、季平均相对湿度和历年的月最高气温、极端最高气温、主要天气气候事件等气象资料以及广西疾病预防控制中心的疾病监测数据和相关医学文献,对广西气候因素对人体健康的影响开展研究。结果显示,冬季和秋季的寒潮、夏季高温热浪,春、秋、冬季的"回南天"、低温阴雨是对人体健康影响较大的天气气候事件;气象因素引发的主要疾病包括心脑血管疾病、呼吸道疾病、胃肠道疾病等,其中受气象因素影响而致死的疾病中以心脑血管疾病死亡率最高,呼吸道疾病死亡率居第二位。  相似文献