高校化学类课程线上教学实践探讨

本文分析了高校化学类课程单纯进行线上教学的优势和不足,提出地方普通高校理论课采用“O-PIPAS”教学方法,加大仿真模拟实验的推广,以及完善设计实验操作环节进行的建议。

Evaluation on Heavy Metal Content in Soil of Rural Landfill in Chongqing

To understand heavy metal content in soil of rural landfill in Chongqing, samples were collected at 10 sampling sites of different counties. Zn, Cr, Cu, Cd and Pb contents were analyzed, and their pollution degrees were evaluated by single-factor evaluation and index of geoaccumulation. Results displayed that there was no Cr pollution in soil of rural landfill in Chongqing, but Cd pollution was very serious. Pb, Zn and Cu showed spatial difference in different counties. Dispersion degrees of Zn and Pb pollution were lower, and their pollution degrees were also relatively lower. Dispersion degree of Cu pollution was higher, and its pollution degree was also relatively higher.

无机化学混合式课堂教学实践分析

分析了环境科学专业无机化学课程的教学现状,提出了采用线上线下教学结合的混合式课堂的形式,从四个方面开展教学设计,并对实践进行了总结,为今后完善教学提出了建议。

Responses of Net Primary Productivity to Climatic Factors in Youyang County

Based on monthly data of precipitation,temperature,sunshine duration,wind speed,relative humidity and other climatic factors in Youyang County during 1956-2013,net primary productivity(NPP)in the county was calculated by using a climate productivity model,and effects of changes in climatic factors on NPP in the county were studied.The results show that annual average NPP in Youyang County during 1956-2013was 11.137 t/(hm^2·a),but there were no significant changes over the past 58 years.There was a significantly positive correlation between NPP and annual precipitation or annual mean relative humidity.Under the background of global warming,NPP in Youyang County will face greater pressure,thereby putting pressure on local ecological environment.The research can provide scientific reference for the construction of Youyang County and ecological protection zones in the southeast of Chongqing.

Accounting Research about Soot Emission Caused by Coal Combustion in Chongqing

As rapid development of economy and acceleration of urbanization process, air pollution problem in Chongqing was more and more prominent. By referring to statistical yearbook and investigating energy usage and economy activity levels of various industrial sectors of Chongqing, basic data （activity level, energy production and consumption situation） of various economic sectors of Chongqing during 2007 -2012 were ob- tained. Using emission coefficient method, soot emission inventory in Chongqing during 2007 -2012 was established. Meanwhile, input-output model containing environmental factor was established to study relationship between economy development and environmental protection and number relationship between economy development and pollutant emission. According to the results, countermeasures of emission reduction in Chongqing were put forward.

Study on Rice Water Requirement of Liangping County under Climate Change Background

Under global climate change background,using daily meteorological data at Liangping ground meteorological station during 1961- 2012,we calculated crop water requirement and net irrigation water requirement during rice growth period in Liangping County,and analyzed its climate tendency rate. Results showed that climate tendency rate of crop water requirement during growth period of rice was only- 0. 007 mm /10 a; climate tendency rate of rainfall was- 0. 06 mm /10 a,but interannual change was relatively larger; climate tendency rate of net irrigation water requirement was 0. 011 mm /10 a. In the years when drought occurred,such as 2006 and 2011,both rice water requirement and net irrigation water requirement in Liangping were greatly higher than means over the years. Therefore,we should focus on drought pre-warning and risk management improving drought disaster prevention in Liangping in the future.

Study on Temporal-spatial Distribution of Heavy Rain and Rainstorm in Different Functional Areas of Chongqing

To discuss response ability of five functional areas to rainstorm flood in Chongqing,by taking 8 districts（ counties） as research object,monthly occurrence times of heavy rain and rainstorm in different functional areas over the years and appearance month of the maximum rainfall were conducted statistics. Results showed that frequency distribution of heavy rain in whole year in different functional areas was different,but it was similar in the same functional zone. Temporal-spatial distribution of rainstorm was more independent,and there were different performances in various districts of each functional area. In urban functional core area and urban functional expansion area,rainstorm times was more,and the maximum precipitation was larger. In urban development new district,rainstorm times and the maximum precipitation were relatively smaller in whole Chongqing. In ecological conservation development area of northeast Chongqing,rainstorm duration was longer,and we needed prevention and control during June- September. In ecological protection area of southeast Chongqing,although rainstorm occurrence times was the most in Chongqing,the heavy rainstorm was less.

《大气污染控制工程》课程思政教学案例设计

《大气污染控制工程》课程是环境科学专业的主干课程,在给学生传授理论知识的过程中,通过生动的案例的讲解,渗透思政教育,发挥全方位育人的作用。本文以《大气污染控制工程》课程第一章绪论中的知识为案例,阐明如何将生态文明观、坚定制度自信、树立科技报国的家国情怀等思政元素融入教学过程中,实现思政与专业教育的有机融合,为环境科学专业的课程思政建设提供参考。