关于饮用水水源保护在广西环境保护“十三五”规划中的战略思考

在对广西当前环境形势以及"十二五"时期饮用水水源地保护问题识别的基础上,结合广西全面建设小康环境新要求,提出了"十三五"饮用水水源保护规划体系以及规划目标的设想,并从保护红线、面源治理、点源治理、环境监测、信息公开5个方面给出了基本的策略建议,可为制定广西"十三五"环境保护规划目标和重点任务提供参考。     

浅析苏州市“十三五”环境保护和生态建设规划总体思路

文章分析苏州“十二五”期间存在的环境问题,明确“十三五”生态环境保护工作以改善水、大气、土壤等环境质量为核心,环境风险得到有效管控,建成较为完整的生态文明制度体系的目标,并提出了绿色发展全过程治污减排,打好治水、控霾、净土三大战役,强化生态空间保护,加强综合管控降低重点领域环境风险,推进生态环保制度改革,全面增强环境监管能力等方面的主要任务,促进经济社会与生态环境保护更好更快地协调发展.     

Experiences of Measurement,Reporting and Verification Towards 20% Reduction Target in China

Bali Action Plan provisions acknowledge the fact that developing countries are already making efforts to reduce emis- sions and move towards a low carbon pathway. The Copenhagen Accord mentions Nationa...     

Influence of the Anterior and Middle Cranial Fossae on Brain Kinematics During Sagittal Plane Head Rotation

A 2D physical model of the human head was used to investigate how the irregular skull base structure affects brain kinematics during sagittal plane head dynamics. The model consisted of a rigid skull vessel with interchangeable skull base structures. One version of the model used a skull base mimicking the irregular geometry of the human. A second version used a skull base structure approximating the anterior and middle fossae as a flat surface. Silicone gel simulated the brain and was separated from the vessel by a paraffin layer which provided a slip condition at the interface between the gel and vessel. The model was exposed to 7600 rad/s² peak rotational acceleration with 6 ms pulse duration and 5° forced rotation. After 90° free rotation, the model was decelerated during 30 ms. Five repeated tests were conducted with each version. Rigid body displacement, shear strain and principal strains were determined from high-speed video recorded trajectories of grid markers located at different positions in the surrogate brain. The humanlike skull base reduced peak displacements of the inferior surfaces of the temporal and frontal lobes up to 87% and 48%, respectively. Up to 48% and 36% higher peak strains were obtained in the frontal and superior regions of the surrogate brain in the version containing the humanlike skull base. In contrast, the humanlike skull base decreased peak strain up to 28% in the central region of the surrogate brain. The results indicate that the irregular skull base offers natural protection of nerves and vessels passing through fissures and foramina in the cranial floor but also that it affects kinematics in different regions throughout the cerebrum. Implications of these results are discussed with respect to brain injury and modeling of head impact.     

“十一五”期间大凌河朝阳段水环境质量变化趋势研究

通过分析"十一五"期间大凌河朝阳段环境质量变化趋势,发现:氨氮浓度呈整体上升趋势,化学需氧量浓度呈整体下降趋势;氨氮从V类水质降低到中劣V类水质标准,化学需氧量从劣V类水质升高到中IV类水质标准。"十一五"期间大凌河朝阳段水环境质量的变化原因为:城市污水处理厂对氨氮去除率不高。基于此,提出了"十二五"期间大凌河朝阳段可将调整产业结构、发展绿色经济、实施污染治理三大工程作为水环境污染防治对策。     

“水污染防治行动计划”实施背景下我国水环境管理优化对策研究

针对我国日益凸显的水资源过度开发、水环境污染、水资源短缺、用水效率与效益低下等水危机,对我国近年来出台最严格水资源管理制度、"水污染防治行动计划"(称"水十条")等水资源管理、水环境保护相关政策与研究进展及国外在水环境管理方面经验进行了探讨。分析了"水十条"实施后在水资源管理、水生态安全、法律法规与执法监管、资金投入与激励机制、技术推进与公众参与等需解决的关键问题与推进重点工作,提出具体措施包括以协作机制优化区域流域水环境管理,完善水权交易并规范绿色投融资体系,创新水文化建设与公众参与模式,优化分区、分级、共治的水环境管理法规与执法支撑体系,强化信息化、集成化的水环境管理与应用等。     

低碳经济下洛阳市生态城市规划研究

"十三五"时期是推动城市向协调、开放、绿色、环保发展的新时期,这对重工业发达的洛阳来说是一个承前启后的时期.近些年来,洛阳市在城市化进程中所产生的城市生态环境问题日益突出.为了适应新时期的发展,文章对当前洛阳市生态城市规划与已有城市规划体系间如何实现有机融合做出思考,指出洛阳市城市规划必须走低碳经济之路,强调在城乡规划,绿色公共交通网络建立,污水管道规划,绿地规划等四个方面树立生态环境标准从而有效实现洛阳市生态城市规划.     

乌鲁木齐市"十二五"期间生物丰度指数变化研究

研究借助计算机监督分类手段,依照《生态环境状况评价技术规范HJ 192-2015》研究了乌鲁木齐市"十二五"期间生物丰度指数(biological richness index,BRI)变化情况.结果表明,乌鲁木齐市"十二五"末建设用地、林地、草地较初期增加16.61%、6.90%、0.57%,未利用地、耕地、水域则减少1.81%、3.31%、5.24%.整体BRI加权值为20.48,较初期下降1.68,其中乌鲁木齐县最高,为27.03,新市区为最低的14.06,总体生物丰度状况略微变差.该研究可为乌鲁木齐市生态环境建设提供依据.     

The National Falls Free™ Initiative, working collaboratively to affect change

Introduction

Since 2004 the National Council on Aging (NCOA) has been working in collaboration with a growing number of national, state, and local organizations through the Falls Free^© Initiative to address the growing public health issue of falls and fall-related injuries among older adults. Through collaborative leadership, evidence-based interventions, practical lifestyle adjustments, and community partnerships we are working to reduce the number of older adult falls.

Impact on industry

The many activities of the national and state coalitions have brought recognition to the issue of fall prevention, education, and training to providers and greater investment in programs and services resulting in tremendous momentum and community activism. While we have yet to realize an impact on rates of falls, this strategic investment in building the infrastructure needed to affect change is the first step toward reducing the growing number of falls among older adults.     

Prediction of germination rates of weed species: Relationships between germination speed parameters and species traits

In fields, the timing of weed emergence flushes is mostly related to the timing and rate of seed germination, which depend on seed dormancy level, soil temperature and water potential conditions as well as soil tillage and crop sowing date. Seed germination parameters are essential in weed dynamics models to account for the effects of soil conditions on weed demography. Since these parameters are difficult to measure, our objective was to test the possibility of estimating them from easily accessible information. Seed germination parameters (germination lag-time, time to mid-germination and mid-germination rate) were measured or collected from the literature for 25 weed species with contrasted seed characteristics. Correlations were then searched for between these parameters and morphological, chemical and physiological seed traits as well as seed dormancy level. The dormancy level was positively correlated with speed of germination parameters. Earliness of germination was positively correlated with seed lipid content and the seed area to mass ratio. Germination was also earlier and faster in species with a high base temperature for germination. These relationships explained about half the observed variability in germination speed parameters but should be further tested before being used to predict the germination behaviour of weed species in the field in different seasons.