川西地区气田废水处理技术及应用

简要介绍了川西地区气田废水的水质特征,阐述了物理及化学处理、生物处理、气田废水回注在川西地区的应用,其中齐福废水处理站经过物理及化学处理之后、袁家废水处理站经过生物处理后,基本达到了《污水综合排放标准》(GB8978-1996),并对川西气田废水处理技术的发展做了展望。     

北方和沿海绿色生态屏障加速构建

国家林业局局长贾治邦近日提出,加快构建两大绿色生态屏障,是贯彻落实胡锦涛总书记关于生态建设一系列重要指示精神的重要举措,是维护国土生态安全、实现生态良好的现实需要。今后,在北方地区以防沙治沙为重点,大力营造防风固沙林,加快毛乌素、科尔沁等重点区域防护林体系建设。到2020年“三北”地区森林覆盖率达到12％,50％以上可治理的沙化土地得到治理,     

太湖地区肥料、农药过量施用调查研究

抽样选择毗邻太湖的常州市武进区雪堰镇3个村,调查当地种植结构及变化,肥料、农药过量施用情况,以及农民对农业面源污染的认识。结果显示,肥料投入总量依次为：蔬菜〉水蜜桃〉葡萄〉稻麦轮作〉稻油轮作〉柑橘〉茶叶;稻-麦轮作、水蜜桃和柑橘3种主要种植模式都存在肥料过量施用,稻-麦轮作N投入过量,水稻和小麦过量的比例分别为40.00%和53.57%,水蜜桃和柑橘则是P2O5投入过量,比例分别为85.71%和25.00%。因此,太湖地区减量施肥的潜力较大。农药投入近年来有所下降,但绝对投入量仍较大,远高于10-15年前的使用量,也有较大的减量空间。当地农民对农业面源污染缺乏认识,急需宣传提高。     

我国中部地区经济增长收敛性分析

运用以人口为权数的Theil指数分析我国中部地区经济σ-收敛发现:1997-2007年中部地区存在较明显的σ-收敛,且省际间的经济差异是中部地区经济σ-收敛的阻碍因素;同时运用Barro和Sala-i-Martin经典模型分析中部地区经济β-收敛,通过加入影响经济增长的动态变量--城市化、工业化等条件发现:中部地区存在显著的条件β-收敛,其中工业化和创新能力是影响中部地区条件β-收敛的首要因素,政府过度干预经济的行为是阻碍其条件β-收敛的重要因素.     

数字

4 英国政府22日发布一份“全球气温升高4摄氏度影响图”,描述了如果无法遏制全球变暖趋势将可能出现的“灾难性”景象,在全球平均气温上升4摄氏度的情况下,北极地区气温可上升达16摄氏度,地中海沿岸地区水资源将减少70％,美洲的玉米和谷物产量将减少40％,而亚洲一些国家的水稻产量将减少30％。     

乌昌地区废旧轮胎回收利用现状调查及分析

选取新疆经济发展最快的乌昌地区为靶区,以现场调查资料为基础,根据国内外废旧轮胎回收利用发展变化特点,对该区域的废旧轮胎现状进行了统计分析,并对乌昌地区废旧轮胎的产生量进行了预测。通过对乌昌地区废旧轮胎回收市场特点的调查研究,指出了乌昌地区废旧轮胎回收市场目前存在的问题,提出了相应的建议和措施。     

青海省垣“六·五”世界环境日环保宣传——“落实生态立省战略、建设和谐大美青海”环保主题演出异彩纷呈

在西宁地区省垣单位“6·5”世界环境日环保宣传系列活动中,省环保厅联合省委宣传部、农工民主党青海省委、西宁市环保局等部门共同举办了“落实生态立省战略、建设和谐大美青海”环保主题演出活动。现场演出了合唱《绿化之歌》、歌伴舞《我们青海》、男声独唱《咱们老百姓》、《花花尕妹》、现代舞《现代狂歌》、民族舞《吉祥祝福》、小品《妹妹送哥上新疆》、青海花儿《环境保护是心上的话》、     

SOS!农村水资源告急！

一直以来,很多人都错误地认为农村不缺水。除农村安全饮用水工程之外,农村水资源问题似乎并没有引起相关部门的足够重视。然而一个不争的事实是,我国农村地区缺水现象异常突出：河流断流、地表水污染、池塘沟渠干涸……导致农业减产、农民减收等一系列问题的出现。     

China＇s Land Carrying Capacity Based on Man-grain Relationships

With population growth and increasing pressure on land resources, land carrying capacity （LCC） and food safety have been attracting great attention worldwide. From the point of man-grain relationship and by establishing LCC and land carrying capacity index （LCCI） models, this article firstly analyzes the spatial-temporal dynamics of LCC of China from 1949 to 2005 at county, provincial and national levels. Choosing 2005 as a representative year, this article then evaluates the LCC of 264 pastoral regions （semipastoral regions）, 663 urban regions and 592 poverty stricken regions of the country. The results show that： （1） from 1949 to 2005, with the increase of grain production, the LCC of China has been improved conspicuously, but due to the rapid population growth, the production can only maintain a low level grain consumption; （2） over the past 25 years （1980-2005）, the number of population overloading provinces decreased from 23 to 15 and the mangrain relationship has been improved gradually, but there were more overloading provinces than surplus provinces in China; （3） at county level, there were 1572 overloading counties in 1980 accounting for 68.26% of the total counties of the country and where were 649 million people lived, while in 1990, 2000 and 2005, the number of overloading counties were 1066, 1133 and 1087 respectively, which shows that the man-grain relationship has been improved obviously during the past 25 years; as for spatial distribution, the surplus counties were mainly concentrated in agriculture developed regions, such as Northeast Plain, North China Plain, middle and lower Reaches of the Yangtze River Plain, and overloading counties were mainly located in regions with poor natural environment and low grain production capacity, such as Northwest China, Tibetan Plateau and Loess Plateau and economically developed urban regions, such as Beijing, Tianjin and Shanghai; （4） animal husbandry improved greatly the LCC of pastoral and semi-pastoral regions, while urban regions were overloading for increasing population pressure and more than half of poverty stricken regions were overloading due to critical natural environment and poor economic conditions.     

Change of Flood Patterns in China under the Influences of Climate Change and Human Activities

Based on the flood affected area （FA） data of the provinces in China from 1950 to 2005, the article discusses the change of the flood patterns in China, and investigates its relationship with climate change and human activities. The flood center shifted from North China and the Yangtze-Huaihe basin in the 1950s towards the south, north and west of China, and located in the south of the Yangtze River and South China after the 1990s. The FA in the western provinces was continuously on the rise since the 1950s. There are two characteristics for the future flood pattem in China. The pattern of ＂flood in the south and drought in the north＂ depends on the north-south shift of the maximum rainfall region in eastern China. The flood intensification to the west of Hu Huanyong＇s line mainly results from the increase of rainfall, extreme precipitation and the melting of glaciers under the background of human activity magnification.