用科学的发展观引领中国城市化进程

城市化是中国经济社会发展的必然趋势。城乡二元体制将会给中国的城市化进程带来巨大的挑战；城市特别是大城市圈在今后中强经济发展中的作用越来越突出。将成为区域经济发展的主导力量。目前中国正处于城市化加速发展阶段。城市化水平严重滞后于工业化水平。低城市化率引发经济社会发展中的许多深层次矛盾。片面追求经济增长已让我们付出了沉重的代价。加快我强的城市化进程必须抛弃传统的发展理念和发展模式。用科学的发展观加以引领。城市发展甍兼顾中国冒情，坚持走大、中、小城市协调发展之路；要统筹处理经济增长、人口增长、资源利用与环境保护的关系。实现城乡经济社会协调发展。     

Restoration of riparian forest using irrigation,artificial disturbance,and natural seedfall

In interior western North America, many riparian forests dominated by cottonwood and willow are failing to reproduce downstream of dams. We tested the hypothesis that establishment is now prevented by absence of the bare, moist substrate formerly provided by floods and channel movement. Along Boulder Creek, a dammed stream in the Colorado plains, we tested the effects of disturbance (sod removal), irrigation, and addition of seed on the establishment of seedings of plains cottonwood (Populus deltoides subsp.monilifera) and peachleaf willow (Salix amygdaloides). In unirrigated, undisturbed plots, mean cottonwood density was 0.03 seedlings/m². Irrigation or disturbance alone produced mean cottonwood densities of 0.39 and 0.75 seedlings/m². Plots that were both irrigated and disturbed produced a mean cottonwood density of 10.3 seedlings/m². The effects of irrigation and disturbance on cottonwood establishment were significant (P<0.005); added seed had no significant effect (P=0.78). The few cottonwood seedlings in unirrigated plots were in low positions susceptible to scour by future moderate flows. We conclude that cottonwood establishment along Boulder Creek is limited by the scarcity of bare, moist sites safe from future scour. Establishment of peachleaf willow was significantly affected only by disturbance; daily sprinkler irrigation did not provide sufficient moisture to increase survival of this species. Our results demonstrate the feasibility of restoring plains cottonwood forests using natural seedfall, even where only widely scattered adult trees are present. Because use of natural seedfall conserves the genetic makeup of the local population, this method may be preferable to the use of imported cuttings.     

用科学发展观指导河北省环保工作

河北省环境保护工作非常重要,任务又很艰巨,因此必须用科学发展观指导河北省环保工作。以人为本,着力解决关系人民群众切身利益的环境问题;在统筹发展中促进人与自然的和谐发展;坚持环保创建工作,以典型引路,树立协调发展的各类先进典型;解放思想,转变思路,突出重点,努力改善环保质量。     

新标准下燃煤电厂环保设施改造技术方案分析

新火电厂大气污染排放标准执行在即,为了保证现役机组稳定达标排放,煤电机组的环保设施需要进行技术改造,满足新标准的综合改造是一个系统工程,涉及电网安全、机组安全、场地条件、资源条件、技术条件、经济条件等因素,改造前应详细论证,综合各方面因素确定。原脱硫、除尘、脱硝设施运行优化调整后仍不能达到标准要求的,则需采进行局部或全面改造。脱硫设施的改造重点应在吸收系统,主要方法有原塔提效、单塔双循环、双塔双循环;除尘设施的改造重点应在提高原电除尘比收尘面积、改为布袋/电袋复合除尘或增设二级烟气净化设施;脱硝设施的改造重点应在优化流场氨氮混合均匀度、提高催化剂反应活性、增加催化剂的耐磨性。     

环境类专业本科实践教学创新体系的构建与实践

如何培养兼具技术综合应用能力与科技创新能力的复合型人才,是目前环境类专业人才培养的重点和难点。为适应形势发展的需要,华中科技大学以本科生工程实践能力与科技创新能力培养为核心,构建了环境类专业本科实践教学创新体系,在工程实践教学领域进行了一系列的综合改革与尝试,取得了显著的成效。本文详细介绍了环境类专业本科实践教学创新体系的基本构成、构建方法、运行机制和实践效果,为国内高等工科院校相近及相关专业的实践教学环节改革提供了参考与借鉴。     

大兴安岭森林火灾中居民避难行动的调查

本文利用民意测验的方法,通过对大兴安岭特大森林火灾中居民避难行动的调查,对重大灾害发生后避难系统工程进行了探讨,并分别对该工程进行了评价。     

环境伦理在环境保护中的应用及意义

目前,我国对环境保护越来越重视,但是仍有许多人不能自觉地做环境的保护者,这对环境的保护、治理、修复进展有很大的影响,所以从提高人们环境保护意识出发,阐述环境保护意识的重要性,及应该加强其宣传力度.     

建设生态文明的重要举措——《让不堪重负的江河休养生息》述评

让江河湖泊休养生息，就是要实行最为严格的污染物排放总量控制制度，以水环境容量确定发展方式和发展规模；就是要尊重自然规律，充分发挥水生态系统的自我修复能力，逐步改变环境恶化状况；就是要综合运用工程的、技术的、生态的方法，加大治理水环境的力度，促进水生态系统尽快步入良性循环的轨道；就是要充分运用法律、经济和必要的行政手段，既要形成严格排放、合理开发的强大压力，又要形成主动治理水环境的积极动力，用高效的办法解决长期积累的环境问题。     

多元文化资源整合与区域文化旅游创新发展——以云南丽江为例

以云南丽江为例，指出类似丽江的诸多西部多民族交错聚居区在文化旅游二次创业过程中突出自身区域主体民族文化特色的同时，必须要重视非主体民族文化资源的保护与开发，让各民族社区参与能力的塑造和培育都能在旅游开发中得到协调发展。这既是文化多样性对区域文化旅游资源整合重构的内在发展要求，也是区域旅游在二次创业中发挥扩散效应的重要导向。     

Can food safety policy-making be both scientifically and democratically legitimated? If so,how?

This paper provides an analysis of the evolution of thinking and talking about the role of scientific knowledge and expertise in food safety policy-making, and in risk policy-making more generally from the late 19th century to the present day. It highlights the defining characteristics of several models that have been used to represent and interpret the relations between policy-makers and expert scientific advisors and between scientific and political considerations. Both conceptual and empirical strengths and weaknesses of those models are identified, focusing in particular on the ways in which they deal with scientific uncertainties and social choices. By drawing on both empirical evidence and conceptual analysis, a novel and more realistic model is provided along with an account of some conditions for food safety policy-making achieving both scientific and democratic legitimacy.