《生态环境学报》的各项学术质量指标都较高

据中国科学技术信息研究所2013年9月发布的《2013版中国期刊引证报告（核心版）》,《生态环境学报》2012年的核心影响因子为1．105（即在1994种中国科技核心期刊中统计的数据）、核心总被引频次为4025次,核心他引率0．93,基金论文比0．90（即90％）。影响因子、被引频次在生态学类（2013年新分出的一类）7种核心期刊中分别列第3和第4位,在全国1994种核心期刊中分别列第101和70位。     

《生态环境学报》的学术质量指标较高

据中国学术期刊（光盘版）电子杂志社中国科学文献计量评价中心2010年11月发布的《中国学术期刊影响因子年报》（自然科学与工程技术·2010版）,《生态环境学报》2009年的总被引频次5918次,影响因子为1．610,他引影响因子为1．455,他引率0．91,     

《生态环境学报》的各项学术质量指标都较高

据中国科学技术信息研究所2013年9月发布的（（2013版中国期刊引证报告（核心版）》,《生态环境学报》2012年的核心影响因子为1．105（即在1994种中国科技核心期刊中统计的数据）、核心总被引频次为4025次,核心他引率0．93,基金论文比0．90（即90％）。影响因子、被引频次在生态学类（2013年新分出的一类）7种核心期刊中分别列第3和第4位,在全国1994种核心期刊中分别列第101和70位。     

《生态环境》的学术质量指标较高

据中国科学技术信息研究所2009年10月《2009版中国期刊引证报告（扩刊版）》,《生态环境》（现《生态环境学报》）2008年的影响因子为1．224,总被引频次2446次,他引率0．87;基金论文比为0．952（即95．2％）。这些指标都是较高的,说明本刊的学术质量较高,学术影响力和作用较大。     

《生态环境学报》的学术质量指标较高

据中国学术期刊（光盘版）电子杂志社中国科学文献计量评价中心2010年11月发布的《中国学术期刊影响因子年报》（自然科学与工程技术·2010版）,《生态环境学报》2009年的总被引频次5918次,影响因子为1．610,他引影响因子为1．455,他引率0．91,基金论文比为0．97（即96．8％）,该年WEB下载量15．71万次。这些指标都是较高的,说明本刊的学术质量较高,学术影响力和作用较大。     

聚焦伊朗

为了达到《蒙特利尔议定书》的要求，世界各国正在采取相应行动．作为《臭氧行动简讯》针对这些行动的定期“问与答”系列的一部分．臭氧层保护机构的Fereidoun Rostacni先生根据他的国家最近制定的“国家履约行动计划”．探讨了伊朗的形势     

《生态环境》的学术质量指标较高

据中国科学技术信息研究所2009年10月《2009版中国期刊引证报告（扩刊版）》，《生态环境》（现《生态环境学报》）2008年的影响因子为1．224，总被引频次2446次，他引率0．87；基金论文比为0．952（即95．2％）。这些指标都是较高的，说明本刊的学术质量较高，学术影响力和作用较大。     

《生态环境学报》的各项学术质量指标都较高

据中国科学技术信息研究所2013年9月发布的42013版中国期刊引证报告（核心版）》,《生态环境学报》2012年的核心影响因子为1．105（即在1994种中国科技核心期刊中统计的数据）、核心总被引频次为4025次,核心他引率0．93,基金论文比0．90（即90％）。     

《生态环境学报》荣获中国精品科技期刊称号

接中国科学技术信息研究所通知,经中国精品科技期刊遴选指标体系综合评价,《生态环境学报》被评选为2011年度中国精品科技期刊。该年度中国精品科技期刊评选300种。目前,《生态环境学报》的各项学术质量指标都较高,据中国科学技术信息研究所2011年12月发布的（（2011版中国期刊引证报告（核心版）》,《生态环境学报》2010年在核心期刊中的总被引频次为2863次,影响因子0．933,他引率0．89,     

我院学报明年起更名为《湖南生态科学学报》

2013年10月国家新闻出版广电总局下发文件（新出审字[2013]1235号）,正式批复我院学报更名为《湖南生态科学学报）（CN43-1522／Q）．自2014年起,我院学报将正式更名为《湖南生态科学学报》、更名后的《湖南生态科学学报》为季刊．我院原《湖南环境生物职业技术学院学报》（CN43—1378／Q）创刊于1995年,是综合学术类农林科技期刊、自创刊18年,始终坚持正确的办刊宗旨,同时注重努力提高学报的学术水平和办刊质量,共计刊载学术论文2000余篇．     

毛细管离子分析方法测定湖水中主要无机阴离子含量

用毛细管离子分析方法分析阴离子（Br^-,Cl^-,SO4^2-,NO2^-,NO3^-,F^-,HPO4^2-,HCO3^-)的混合标准溶液,并测定了北京颐和园昆明湖表层水样中阴离子的含量,结果表明,用这种方法所做的标准曲线具有良好的线性相关关系,相关系数较好,比较不同季节表层湖水样品中阴离子的含量变化特征表明,在实验期间,表层湖水中阴离子含量在不同季节变化不明显。     

Large-scale disinfection of real swimming pool water by electro-oxidation

Swimming pool users are a source of various contaminants and microorganisms. Conventional chlorine-based reagents treatment is commonly used to disinfect water. However, this disinfection treatment has serious serious health issues such as formation of carcinogenic by-products, i.e., trihalomethanes. In order to prevent this problem, an electrochemical disinfection process was carried out using synthetic and real swimming pool waters. The performance of the electrochemical system was evaluated by studying the effect of current intensity (0.5–3.0 A), treatment time, type of anode (Nb/BDD and Ti/Pt) and the initial concentration of pathogens Escherichia coli and P. aeruginosa. Results show that real swimming pool water, initially containing 10⁶ CFU/100 mL of pathogens, was disinfected at current intensities of 1.5 and 3.0 A using, respectively, Nb/BDD and Ti/Pt as anode materials (CFU: colony-forming units, BDD: boron-doped diamond). This work is also one of the few showing the up-scaling of electrochemical disinfection of real swimming pool water at large volumes of 100 L.     

Cover Caption

Cover: China is a megadiverse country with myriad conservation challenges and opportunities. In anticipation of the Society for Conservation Biology's annual meeting in Beijing this summer, a small collection of papers focused on China will prime the pump for active discussion of the conservation issues that China and the world face now and in the coming decades. Photos by Jianchu Xu and R. Edward Grumbine. See pages 520–547.     

Aluminium levels in the blood plasma of persons working in the aluminium industry

Due to the exposure to alumina in the air, workers in the primary aluminium industry are expected to exhibit a higher aluminium exposure than the general population. The additional daily intake will be less than 20 mg. The determination of aluminium in blood plasma of electrolysis-workers by flameless atomic absorption spectrometry revealed levels before shift in the range of 20–30 g/L compared to levels of less than 3 g/L in a non-occupationally exposed group. These levels refer to work in old plants with unhooded pots. The plasma levels can rise up to 60 g/L during the shift. A similar rapid change of the levels during work is seen in the urine values. Due to the delay in excretion the maximal values in the range of 5 g/h are found four hours after cessation of work. It seems therefore that only preshift samples give a reliable measure of the body burden. Compared to the much higher levels in dialysis patients the observed values in aluminium workers are not considered to be of relevance to health.     

Cover Caption

Cover: A Tibetan sacred landscape (Mt. Kawagebo), with Tibetan prayer flags in the foreground. Public protected areas in China can conflict with traditional land uses and disenfranchise local people, who have long-term experience in land management. Development of cooperative relationships between the state and local communities is needed for community-driven conservation strategies. Photo by Xu Jianchu. See pages 318–328.     

A two-dimensional stochastic model of downy mildew of radish

A two-dimensional stochastic model that simulates the spread of disease over space and time was recently proposed by Xu and Ridout [Xu, X.M., Ridout, M.S., 1998. Effects of initial epidemic conditions, sporulation rate, and spore dispersal gradient on the spatio-temporal dynamics of plant disease epidemics. Phytopathology 88, 1000–1012]. In a theoretical study, the authors showed the ability of their model to generate a broad range of disease patterns and disease progress rates. The objective of our study was to test if this theoretical approach was able to describe disease progress and the disease pattern of a specific disease, downy mildew (Peronospora parasitica) of radish (Raphanus sativus L.). Two field experiments with artificial inoculation were carried out and disease incidence and spatial pattern were assessed twice a week until disease incidence was greater than 0.25. Four model parameters were estimated by an algorithm that uses a least square regression together with an evolutionary optimisation strategy. Moran's I indices of spatial autocorrelation calculated both for measured und simulated data were significantly correlated (α = 0.05, r = 0.61). Also observed variances in measurements and in simulations were closely and significantly correlated (α = 0.05, r = 0.95). Thus, disease pattern (as assessed in terms of variance inflation and spatial autocorrelation) was well described by the model. The model accounted for 94% of the variation in the disease incidence data. It has, therefore, the potential to be developed into a forecast model for risk analysis and for decision support in plant protection. However, in the specific case of downy mildew on radish more experimental data are required for model validation and to parameterise the effects of environment on infection, sporulation and spore dispersal.     

Introduction to the Issue

We are pleased to introduce this second issue of the Reviewof Environmental Economics and Policy. Like every issue, thisone includes several articles, a focused symposium, and a setof regular features. In the first of three articles, John Graham describes "The EvolvingRegulatory Role of the U.S. Office of Management and Budget,"where he was the "regulatory czar" as administrator of the Officeof Information and Regulatory Affairs (OIRA) from 2001 to 2006.In his essay, Graham responds to the perception of OMB as antiregulatoryby describing the history of OIRA's proactive     

The Application of IUCN Red List Criteria at Regional Levels

This paper represents a work in progress by the World Conservation Union (IUCN). Earlier drafts of the work have appeared in IUCN publications, but the "International Issues" section of Conservation Biology seems an appropriate and important place to publish the penultimate version of the document. Comments on this issue in general or on the approach taken by the IUCN should be sent to the authors directly.
Joshua Ginsburg     

Gametogenesis in a Northumberland population of the polychaete Melinna cristata

The proliferative activity of the germinal epithelium in relation to breeding biology has been investigated in a population of the ampharetid polychaete Melinna cristata (Sars). This species is dioecious and highly gregarious, and breeds during a brief period at the end of December or beginning of January. The gonal exists in proliferative and non-proliferative states. The former begins immediately after spawning, and is maintained until September. The rate of release of gametocytes into the coelom varies during this period, with peaks in January and April. In September, DNA synthesis ceases in gonads of both males and females and no further gametocytes are released into the coelom, but primary oocytes which have completed the S phase of meiosis continue to develop and accumulate in the ovary as a population of previtellogenic oocytes which are released into the coelom immediately after spawning. This cycle of germinal epithelium activity is compared with those described in other polychaetes.