Changing effluent chemistry affect survival,growth and physiological function of <Emphasis Type="Italic">Acacia nilotica</Emphasis> seedlings in northwestern region of India

Recycling and conservation efforts for water are the need of the day because of the lack of new water sources and the ever-increasing demand for drinking water. Seedlings of Acacia nilotica L. were irrigated with: canal water (T₁, control); municipal effluent (T₂); textile effluent (T₃); steel effluent (T₄); textile + municipal effluent in 1:1 ratio (T₅); steel + municipal effluent in 1:2 ratio (T₆); steel + textile in 1:2 ratio (T₈) and steel + municipal + textile in 1:2:2 ratio (T₇) with views to observe effluents effect on the seedlings and its adaptability and to recommend safe disposal of these effluents. Seedlings in T₆, T₇ and T₈ showed 50% lesser height and collar diameter than those in control. Seedlings in T₂ attained greatest height, collar diameter, numbers of branches and produced 140 g dry biomass seedling⁻¹. Highest concentration of manganese (Mn), iron (Fe), copper (Cu) and zinc (Zn) and lowest concentration of nitrogen (N), phosphorus (P), potassium (K), calcium (Ca) and magnesium (Mg) in the seedlings of T₄, T₆, T₇ and T₈ resulted in nutritional imbalance, mineral toxicity and reduction in photosynthetic (Pn) and transpiration (E) rates and caused seedling mortality. Seedlings of T₃ had highest sodium concentration and low concentration of Ca, Mg and micronutrients resulting in nutritional imbalance, augmented chlorosis and reduced gas exchange and biomass by half as compared to control. Increased growth, Pn and E and biomass in seedlings of T₅ over T₃ and survival period in T₆, T₇ and T₈ seedlings suggested a beneficial effect of effluents mixing. Unscientific disposal should be avoided and toxic concentration of metal ions␣may be reduced for long-term application and harmless disposal of effluents in afforestation and urban development.     

Local hegemonies resisting a green shift and what to do about it: the introduction of a regional park in southern Norway

In the Lister region in the southern part of Norway, attempts are currently being made to facilitate for a green shift. The paper discusses two different approaches towards such a challenge. The first is procedural, where success or failure hinges on the methods applied in the effort to convince locals to incorporate climate considerations. The alternative is to reflect upon how a green ideology blends into pre-existing ideological elements in the region. It is claimed that an important reason for the failure so far to place the environment at the core of regional development, is that too much emphasis has been put on the first approach, on procedure and dialogue, whereas few efforts have been made to understand the structure of the discursive terrain in the region. What prevents a green shift has less to do with methods and is more connected to the dominance of a logic of economic growth and the fact that locals are confident that nature is already dealt with in a sensible manner. The conclusion is that we need to understand what people are concerned about and what prevents them to change, before we start telling them how to think and do development.     

“京津冀”地区煤炭相关产业链的体现能核算与政策分析

目前,我国面临的大气污染问题愈发严重,尤其在"京津冀"地区更为突出。而煤炭相关产业链的能源消耗结构及其污染物排放是导致此问题的重要原因之一。本研究基于2012年"京津冀"地区各省、市的能源平衡表,通过区域间能源调配模型,绘制了煤流和能流桑基图,厘清了"京津冀"地区2012年煤炭相关产业链的物质与能量走向,并运用了投入产出法系统核算了"京津冀"地区煤炭相关产业链的体现能与24种污染物排放量。研究结果表明:(1)"京津冀"地区的原煤主要依赖调运,属于净煤炭进口地区。(2)原煤的直接使用在"京津冀"地区的煤炭相关产业链中占有非常大比重。将体现能角度分析的结果与能量角度分析的结果对比,可以发现煤化工产业在煤炭相关产业链中的潜在能量消耗仍然具有较大的贡献。(3)焦炭是终端消费能量的主要来源,也是体现能的主要贡献源。(4)在煤炭转化能源利用效率上,"京津冀"地区2012年煤炭相关产业链洗选煤、煤制品加工、炼焦三个环节的效率分别为87.77%、92.46%、90.97%,稍低于中国2012年96.16%的利用效率。(5)原煤、焦炭的直接消费和炼焦过程对"京津冀"地区2012年煤炭相关产业链七种主要污染物的贡献率最大。为了有效减少"京津冀"地区煤炭相关产业链的污染物排放,需要对原煤、焦炭的直接消费和炼焦过程采取相应的减排政策和措施。本研究可以为"京津冀"地区煤炭相关产业链提高能源利用效率、减少体现能和污染物排放、采取改进措施提供一定的理论支持和政策建议。     

京津冀地区重点耗煤行业大气污染物排放清单研究

本研究通过京津冀地区各行业的年度煤炭消费量确定火电行业、钢铁行业和焦化行业为重点耗煤行业,以在线监测数据、污染源调查(现场调研、环评、验收)数据、排放因子数据为基础,自下而上建立了2013年京津冀地区重点耗煤行业大气污染物排放清单,分析研究了SO_2、NO_x和PM_(10)的排放量与污染贡献分布情况,掌握了京津冀地区重点耗煤行业大气污染物排放现状,为大气污染物减排提供数据基础。研究表明,2013年京津冀火电、钢铁焦化行业共排放SO_2 72.35万t、NO_x 131.99万t、PM_(10) 30.36万t。     

外商投资的区位变动分析

文章利用1983—2000年的统计数据，通过比较分析方法，分析了我国外商投资区位的转移及其影响因素的变化，综合评价了我国中部5省、华东和西部的区位优势，提出了有利于吸引外商投资的建议。     

高黎贡山自然保护区的鱼类

高黎贡山自然保护区位于怒江水系和伊洛瓦底江水系之间。据调查,共有鱼类47种。鱼类组成特点:北部多为中亚高山区种类,属华西区;南部以南亚类群占优势,属华南区。     

哈密地区矿业生产环境保护与综合治理对策探讨

介绍哈密地区矿山企业发展现状,对矿业生产中具有共性的环境问题做了重点分析。深入探讨了在矿业开采中,应加强对当地矿山企业的管理,学习和借鉴国外先进的管理经验,把循环经济、清洁生产等新理念应用于矿山生产的全过程。这将有利于预防或减轻矿业开采造成的环境污染,也是发展经济和保护环境的有效途径。     

1961—2008年新疆阿克苏地区降水、温度变化特征

利用阿克苏地区5个气象站1961—2008年的降水和温度资料,对近50 a来该地区气候变化及其趋势进行了分析。各气象站年降水量变化趋势基本一致,总体上都呈增加趋势。除库车县气象站年平均温度呈降低趋势外,其余呈上升趋势。总体上,阿克苏地区年降水量和年平均温度均呈上升趋势。     

基于资源禀赋特征的怒江流域高山峡谷区经济发展策略思考

怒江流域高山峡谷区域具有集边疆、山区、民族、贫困为一体的特征,是我国典型的欠发达地区.尽管目前怒江流域已经进入工业化初期的经济发展阶段,但是长期闭塞、贫困和工业基础薄弱使流域经济发展动力不足.怒江流域的发展要把握云南建设面向东南亚、南亚开放的重要桥头堡这一战略机遇,立足自身的资源优势,引进外界资本与技术,打造水能资源经济,培育生态服务产业,同时通过交通基础设施建设和人力资本的培育改善发展环境.     

北京山区主体功能区协调发展的区域背景分析

主体功能区划主要在于解决区域问题，用科学发展观协调区域发展。本文从区域发展的整体性出发，用空间发展的相互作用理论分析了北京山区各主体功能区协调发展的区域背景。