平山水源流域污染现状及防治对策

在对平山水源汇水区域实地踏勘的基础上，通过对其流域污染源、水质、生物、土壤、放射性监测和评价，找出平山水源主要污染因子，提出防治对策。     

环境管理的现状分析与对策

针对我国目前环境管理的现状,提出了存在的问题,并且据此提出对策思考。     

沧州市市区大气污染变化趋势及防治对策研究

本从研究沧州市市区空气质量现状及1991—2000年空气污染物浓度变化趋势入手，对市区空气污染特征与原因进行了分析，并在此基础上提出了防治对策。     

中国生态农业的兴起与发展

本文综述了生态农业产生的原因及中国生态农业的概念及特点;发展现状及今后发展趋势。     

土地利用的生态规划：以天津市中心区为例

本文旨在建立一套适宜的城市土地利用生态规划的原则与方法，分析天津市区各种土地利用类型的生态适宜性；帮助当地决策者制定具体的生态对策，以促进城市的发展，改善居民的生活质量；为决策得因工业和居住区要而引起的环境问题提供一条新途径。     

朝阳市环保产业现状与建议

对朝阳市环保产业现状和存在问题进行分析 ,结合朝阳市环保产业发展的优势条件 ,并提出环保产业发展的建议。     

泰来县泰湖水质污染现状及防治对策

本文对泰来县泰湖水质污染现状及防治对策进行了论述。     

天津港三公司能源利用现状及节能对策

近年来，天津港三公司不断挖掘自身潜力，主动应对市场变化，在加快自身发展的同时，也使公司吞吐量跃上了一个新的台阶。2005年我公司完成吞吐量1008万t，今年又根据生产经营状况制定了“确保1000万t”的生产目标。对于一个内河港来说这样的发展速度可以说是跨越式的。但与此同时．我们也应看到公司能耗成本的大幅提高、资源配置如何更加优化以及如何切实搞好能源管理工作。这一系列问题也已经成为我们亟待解决的重要课题。     

The effects of land use and its patterns on soil properties in a small catchment of the Loess Plateau

Due to relatively strong human activities in the hilly area of Loess Plateau,the natural vegetation has been destroyed,and landscape pattern based on agricultural land matrix was land use mosaic composing of shrub land,grassland,woolland and orchard.This pattern has an important effect on soil moisture and soil nutrients.The Danangou catchment,a typical small catchment,was selected to study the effects of land use and its patterns on soil moisture and nutrients in this paper.The results are as follows:The comparisons of soil moisture among seven land uses for wet year and dry year were performed:(1)the average of soil moisture content for whole catchment was 12.11% in wet year,while it was 9.37% in dry year;(2)soil moisture among seven land uses was significantly different in dry year,but not in wet year;(3) form wet year to dry year,the profile type of soil moisture changed from decreasing type to fluctuation-type and from fluctuant type to increasing type;(4)the increasing trend in soil moisture from the top to foot of hillslope occurred in simple land use along slope,while complicated distribution of soil moisture was observed in multiple land uses along slope.The relationships between soil nutrients and land uses and landscape positions were analysed:(1)five nutrient contents of soil organic matter(SOM),total N(TN),available N(AN),total P(TP) and available P(AP) in hilly area were lower than that in other areas.SOM content was less than 1%,TN content less than 0.07%,and TP fallow land and cropland,and higher level in soil fertility was found in crop-fruit intercropping land among croplands;(3)soil nutrient distribution and responses to landscape positions were variable depending on slope and the location of land use types.