Arbuscular mycorrhizal fungus-induced decrease in nitrogen concentration in pore water and nitrogen leaching loss from red soil under simulated heavy rainfall

Environmental Science and Pollution Research - Arbuscular mycorrhizal fungus (AMF) is generally colonized in plant roots and influences the migration of mineral elements such as nitrogen (N) in...     

Hydrochemical appraisal of groundwater quality and pollution source analysis of oil field area: a case study in Daqing City,China

Environmental Science and Pollution Research - Serious groundwater pollution not only affects the development of enterprises but also threatens the life and health of residents. To explore the...     

Effects of emergent and submerged rigid vegetation configurations on gravity current dynamics

Environmental Fluid Mechanics - The propagation and hydrodynamic processes of lock-exchange gravity current through vegetation regions were investigated experimentally. Experimental results show...     

应用模式识别法研究芳腈化合物结构与活性的关系

基于２３个芳腈衍生物对发光菌的毒性疚和一批结构参数，用模式识别法研究了结构与活性的关系。在化合物的生物活性类别与模式特征之间建立的３个类别判别函数对化合物活性类别的判别正确率达９１．３％，并为进一步的研究工作合理地挑选了４个代表性化合物。     

区域历史地理研究与国土规划

人口与资源和环境之间的相互关系是一个历史过程。从发生学观点研究特写区域这种关系及其变化规律是区域历史地理研究的核心内容，探索历史上人口与资源和环境之间相互关系的规律及其演化机制，可为区域国土规划与整治中人口、资源与环境发展提供必要的历史借鉴和客观依据。同时，国土规划与整治的现实任务亦为区域历史地理研究提供了发展机遇。     

Environmental regulations and enterprises innovation performance: the role of R&D investments and political connections

Environment, Development and Sustainability - The purpose of this paper is to investigate the nonlinear relationship between environmental regulations and enterprise innovation performance, as well...     

营口-海城地震活动特征总结

本文利用营口市地震台记录到的地震资料,对1975年海城7.3级地震和1999年海城岫岩5.4级地震的活动特征及地震地质背景进行分析.认为这两次地震同属一种类型在不同地段上的地壳应力在不同时间的释放.从中找到它们之间共同的活动特征以及不同之处,这对于本地区地震分析能够起到一定作用.     

Role of interaction between selenium and organic matters on causes of Kaschin-Beck disease

Influences of organic matters of soil and water on speciation and biological utilization of selenium are discussed. Humic acid is found to be the main pool of selenium in soil and affects the bio-availability of the element in soil-plant system. Fulvic acid from drinking water inhibits the absorption of selenium taken from diet. The relationship between high content of organic matters of water and selenium deficiency on the causes of KBD could be reflected in the limited synthesis of glutathione peroxidase, which is generally stimulated by fulvic acid from drinking water.