从《江淮时报》看机关报的转型之路

机关报作为中国特色的纸媒品种之一,在党和国家工作中有着极其重要的地位。本文以安徽省政协机关报——《江淮时报》为例,探究机关报的转型之路。     

江灌分水岭地区的农业气候资源开发和利用

本文对江淮分水岭地区的气候资源，水资源，农业生产结构进行了分析，对合理开发利用气候资源和水资源问题提出了一些措施。     

Streamwater chemistry and flow dynamics along vegetation-soil gradient in a subalpine Abies fabri forest watershed, China

Streamwater chemistry and spatial flow dynamics from a subalpine Abies fabri forest in an experimental watershed located in the east slope of Gongga Mountain were analyzed to gain insights into the gradient effect of primary community succession on the stream biogeochemical process. Results showed that high sand content (exceeding 80%) and porosity in the soil(exceeding 20% in A horizon and 35% in B horizon), as well as a thick humus layer on the soil surface, made the water exchange quickly in the Huangbengliu (HBL) watershed. Consequently, no surface runoff was observed, and the stream discharge changed rapidly with the daily precipitation. The flow trends of base ions in the stream water were influenced by the Abies fabri succession gradient. Ca^2 , HCO3^- and SO4^2,- were the dominant anions in the streamwater in this region. A significant difference of Ca^2 , HCO3^- and SO4^2- concentration exported between the succession stages in the watershed can be found. But they had the similar temporal change in the stream flow. Ca^2 , HCO3^- and SO4^2- showed significantly negative correlations with the daily precipitation and the stream discharge. Concentrations of Cl^- , Na^ , K^ , and Mg^2 were low in all streamwaters monitored and we observed no differences along the Abies fabri succession gradient. Low ratios of Na. (Na Ca) (range from 0.1 to 0.2) implied cations were from bedrock weathering (internal source process in the soil system) in this region. But, a variance analysis showed there were almost no differences between rainwater and streamwaters for Mg^2 , Na^ , K^ , and Cl^- concentrations. This indicated that they might be come from rainfall inputs(external source). The highly mobile capacity, rapid water exchange between precipitation and discharge, and long-term export lead to this observed pattern were suggested.     

Estimation of runoff and sediment yield in the Redrock Creek watershed using AnnAGNPS and GIS

Sediment has been identified as a significant threat to water quality and channel clogging that in turn may lead to river flooding. With the increasing awareness of the impairment from sediment to water bodies in a watershed, identifying the locations of the major sediment sources and reducing the sediment through management practices will be important for an effective watershed management. The annualized agricultural non-point sourcepollution(AnnAGNPS) model and newly developed GIS interface for it were applied in a small agricultural watershed, Redrock Creek watershed, Kansas, in this pilot study for exploring the effectiveness of using this model as a management tool. The calibrated model appropriately simulated monthly runoff and sediment yield through the practices in this study and potentially suggested the ways of sediment reduction through evaluating the changes of land use and field operation in the model for the purpose of watershed management.     

基于改进光谱角法的红树林高分遥感分类方法研究

传统影像分类方法多利用影像端元光谱进行地物分类,影像的空间结构信息被忽视,本研究结合面向对象分类方法思想以提高红树林遥感分类精度。本研究提出了一种结合端元类型选择、像元提纯等混合像元分解手段及分水岭图像分割算法的改进光谱角影像分类方法,并以山口红树林国家级自然保护区为研究区,利用GF-1号遥感影像数据,在光谱特征分析和地面调查的基础上,对红树林生态系统进行分类,并对分类精度进行分析。研究结果表明:改进的光谱角分类方法对GF-1影像分类效果较好,既兼顾地类光谱组成较复杂时的特殊性,又有效避免结果的破碎化现象,且总体精度达到95%（KAPPA系数0.944）,证明了其在红树林遥感影像分类及信息提取方面的应用潜力,为红树林生态系统业务化遥感监测奠定了基础。     

节能减排淘来真金白银——江淮环保世纪行6市扫描

6月27日上午,2008江淮环保世纪行隆重出征。今年江淮环保世纪行主题是"推动节能减排,建设生态安徽"。参加本次活动的两组26家新闻媒体赶赴合肥、淮南、蚌埠、马鞍山、铜陵、安庆6市,探访节能减排企业典型、挂牌督办企业整改情况。在为期4天的行程中,     

青山绿水绕江淮

风正时济,自当破浪扬帆;任重道远。更需策马扬鞭。在安徽省上下深入学习贯彻中央十七届六中全会、省第九次党代会精神之际,我们迎来了第五次安徽省农村环境保护暨生态创建工作现场会,共同总结“十一五”以来安徽省农村环境保护及生态创建工作经验,谋划“十二五”农村环境保护及生态创建工作发展大计。     

国字号生态开发区绿色满园秀江淮

华东唯一国家环保模范城马鞍山是个以钢铁工业为主体的重工业城市,资源消耗多,生态能力脆弱,环保压力大。马鞍山经济技术开发区地处城市南部,城市二水厂取水口上游、采石风景区上风向,另有西塘公园和清澈的永丰河环绕开发区,自然资源丰厚的园林化园区对环境生态要求很高。但开发区逆风飞扬自我加压,在去年3月国务院正式批复马鞍山经济技术开发区升格为国家级经济技术开发区后,全力吹响更高层次的国家级生态开发区创建号角!     

全球低碳经济发展进入重要分水岭

<正>联合国环境规划署最新报告表明,与利用煤炭和石油发电的1100亿美元投资相比,2008年全球绿色能源发电的投资首次超过传统能源,达到了1400亿美元。低碳经济中的最重要领域——绿色能源(太阳能、风能、生物能源等)发展的状况表明,全球低碳经济发展已进入一个重要分水岭,它已开始对各国经济结构,投资和生产生活产生重要影响。