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	1. Implication of ecohydrology in environmental flow assessment for estuaries
	Xu Jing,Sun Tao
	Environmental Science and Techology 08 November 2010
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	Abstract:In recent years, much attention has gradually been paid to environmental flow assessment for estuaries. Due to complex and multitude influencing factors, great challenges have been posed on environmental flow assessment for estuaries. Ecohydrology, integrating biological and hydrological process, was discussed as a scientific concept applied to problem-solving in environmental issues. An attempt, therefore, made here to reflect the advance and application prospect of ecohydrology in estuarine environmental flow assessment. Considering insufficient biological information of estuaries, simplified ecohydrology model by identifying the key aspects of estuarine ecosystem should be a significant tool in environmental flow assessment.
	TO cite this article:Xu Jing,Sun Tao. Implication of ecohydrology in environmental flow assessment for estuaries[OL].[ 8 November 2010] http://en.paper.edu.cn/en_releasepaper/content/4390914


	2. Effect of Cadmium-polluted Compost on Soil Microbial Biomass and Enzyme Activities
	Guiqiu Chen,Yun Chen,Guangming Zeng,Anwei Chen,Wenjuan Zhang
	Environmental Science and Techology 26 September 2010
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	Abstract:The study was designed to assess changes of microbial biomass and enzyme activities between compost and cadmium-polluted compost applied to red soil. Results showed that soil microbial biomass C and P, activities of catalase, dehydrogenase, and acid phosphatase decrease in all treatments during the incubation time. Cd-polluted compost has an inhibitory effect on microbial biomass P and acid phosphatase activity than compost in control at the same sampling time. Microbial biomass C is activated by 0.26-98.46% in soils of <27.8 mg/kg Cd treatment than that of control. Catalase activity is stimulated by 0.17-4.49% in treatments with <12.8 mg/kg Cd. Dehydrogenase activity in treatment of 8.8 mg/kg Cd increases by 1.6-16.1% than that of control. Urease activity increases by 0.56-65.90% with an increase of Cd in compost with <17.8 mg/kg Cd. But in treatments with >27.8 mg/kg Cd, the urease activity is inhibited by 0.81-2.65% at Day 20. These results suggest that <27.8 mg/kg Cd-contaminated compost have activation impacts on soil microbial biomass C, urease, catalase, and dehydrogenase activity.
	TO cite this article:Guiqiu Chen,Yun Chen,Guangming Zeng, et al. Effect of Cadmium-polluted Compost on Soil Microbial Biomass and Enzyme Activities[OL].[26 September 2010] http://en.paper.edu.cn/en_releasepaper/content/4386731

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	3. Adsorption of thallium(I) onto minerals and geological materials: Influence of pH and humic acid
	LIU Juan,LIPPOLD Holger,WANG Jin,LIPPMANN-PIPKE Johanna,CHEN Yongheng
	Environmental Science and Techology 15 September 2010
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	Abstract:In this paper, the adsorption of the severely toxic heavy metal thallium (Tl) as a monovalent cation onto three representative materials (goethite, pyrolusite and a natural sediment sampled from a field site) was examined as a function of pH in the absence and presence of two natural humic acids (HAs) , using 204Tl(I) as a radiotracer. In order to obtain a basic understanding of the relative trends of the pH functions in the adsorption of Tl(I) with and without HA, adsorption of HAs and humate complexation of Tl(I) as a function of pH were investigated as well. In spite of the low complexation between Tl(I) and HAs, the presence of HAs results in obvious alterations of Tl(I) adsorption onto pyrolusite and sediment. An influence on Tl(I) adsorption onto goethite was not observed. Predictions of Kd (distribution coefficient) for Tl(I) on goethite in the presence of HAs based on a linear additive model agree well with the experimental data, while a notable disagreement occurs for the pyrolusite and sediment systems. Accordingly, it is suggested that HAs and goethite may act as a non-interacting adsorbent mixture under the conditions here, but more complex interactive effects may take place between the HAs and mineral phases of pyrolusite or sediment.
	TO cite this article:LIU Juan,LIPPOLD Holger,WANG Jin, et al. Adsorption of thallium(I) onto minerals and geological materials: Influence of pH and humic acid[OL].[15 September 2010] http://en.paper.edu.cn/en_releasepaper/content/4385379


	4. Evaluation of the real value of land use considering both environmental costs and economic value
	Meng Qingxiang,Liu Rui,Fan Shujie
	Environmental Science and Techology 04 August 2010
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	Abstract:Land resource is finite and precious in the development of society .Environment costs which contribute to human welfare, both directly and indirectly, are often neglected in the evaluation of land use. This paper ，from the view of the land use，presents a study of value assessment including both environmental costs and economic value. By multiplying a set of ecosystem services with a set of corresponding shadow prices which are based on published studies and a few original calculations, the current environment costs (EC) can be estimated. Also the economic value (EV) produced by land use is calculated in this paper. Then functions assessing the real value of land use can be obtained by considering the environment costs and economic value. Application of this study on a land use example is shown lately. At last, how to achieve the sustainable development with the finite land resource is discussed.
	TO cite this article:Meng Qingxiang,Liu Rui,Fan Shujie. Evaluation of the real value of land use considering both environmental costs and economic value[OL].[ 4 August 2010] http://en.paper.edu.cn/en_releasepaper/content/4380718


	5. Analysis of the development of global carbon offsets
	Pan Lingxiao,Xu Jiren,Yang Yuanxuan
	Environmental Science and Techology 01 August 2010
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	Abstract:A carbon offset is a financial instrument aimed at a reduction in greenhouse gas emissions.Carbon offsetting has gained some appeal and momentum mainly among consumers in western countries who have become aware and concerned about the potentially negative environmental effects of energy-intensive lifestyles and economies. In this papper, we will analysis the development situation of carbon offset.
	TO cite this article:Pan Lingxiao,Xu Jiren,Yang Yuanxuan. Analysis of the development of global carbon offsets[OL].[ 1 August 2010] http://en.paper.edu.cn/en_releasepaper/content/4380468


	6. The Relation between Algae and Fungi in the Water Body and the Formation Mechanism of Ocean Red Tides
	Pan Xianguang,Yu Zidong
	Environmental Science and Techology 18 May 2010
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	Abstract:This paper has analyzed the opposite and united relations between algae and fungi in the water body from the micro perspective; they maintain the ecological balance of the water body. It has also analyzed the primary causes of the two major water quality disasters-fungi water quality disaster and algae water quality disaster, and theoretically analyzed the formation mechanisms of red tides and green tides of ocean. In the meantime, it has also analyzed the major cause of Qingdao green algae disaster.
	TO cite this article:Pan Xianguang,Yu Zidong. The Relation between Algae and Fungi in the Water Body and the Formation Mechanism of Ocean Red Tides[OL].[18 May 2010] http://en.paper.edu.cn/en_releasepaper/content/4372843


	7. Investigation of Solid Waste Management and its environmental problem in El
	John Leju Celestino Ladu,Marcelino Tombe Jada,Darious Lofu Celestino
	Environmental Science and Techology 14 April 2010
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	Abstract:This study attempts to investigate the management of solid wastes and evaluate other related environmental and human health aspects. El Obied accordingly was the focus of intensive field research. Interviews and observations were used to provide the necessary information. In this study, the sources and components of solid waste were identified, the quantity of solid waste disposed, methods of solid waste disposal and management evaluated, common diseases and disease vectors were assessed and the roles of public health department to solid waste management, problems it faces and workers general health condition were highlighted. Results showed that solid wastes in El Obied urban area were complex in composition and quantity. Management of solid wastes by public health department in El Obied is inefficient. Lack of finance, inadequate number of personnel Lack of transport and proper accommodation are the main problems causing mismanagement of solid wastes. Diseases resulting from poor environmental sanitation constitute the bulk of the health problems in the study area. Communicable diseases were highly prevalent. Accordingly, problem of solid waste management in EI-Obeid will continue to magnify and urban environment will uncontrollably deteriorate unless proper management is taken and the public cooperate with public health department in environmental sanitation of the town.
	TO cite this article:John Leju Celestino Ladu,Marcelino Tombe Jada,Darious Lofu Celestino. Investigation of Solid Waste Management and its environmental problem in El[OL].[14 April 2010] http://en.paper.edu.cn/en_releasepaper/content/41909


	8. Coagulation performance and residual aluminum speciation of Al2(SO4)3 and polyaluminum chloride (PAC) in Yellow River water treatment
	Yang Zhonglian,Gao Baoyu,Yue Qinyan
	Environmental Science and Techology 08 April 2010
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	Abstract:The effect of pH and coagulant dosage on the coagulation performance of Al2(SO4)3 and PAC with respect to the treatment of Yellow River water was investigated in this paper and the separation and measurement of residual aluminum speciation were also conducted. The results indicated that PAC showed superior coagulation performance compared to that of Al2(SO4)3 during the Yellow River water treatment. At a dosage of 15 mg/L, PAC achieved an optimum removal efficiency of turbidity, UV254 and DOC of 96.3%, 57.1%, 32.7%, respectively and Al2(SO4)3 also achieved an optimum removal efficiency of turbidity, UV254 and DOC of 94.5%, 53.5% 34.8%, respectively. For PAC and Al2 (SO4)3, the optimum pH during the treatment of Yellow River water could be determined at 6.0. Different residual aluminum speciation exhibited different trends with dosage and pH variation. For the two coagulants, no matter under different dosage or under different pH, the majority of residual total aluminum existed most in the form of total dissolved Al, among which, dissolved organically-bound Al was the predominant speciation. Dissolved inorganically-bound monomeric Al was the main component in dissolved monomeric Al. PAC showed lower concentration for the several kinds of residual aluminum species; except the dissolved organically-bound Al and PAC could effectively reduce the concentration of dissolved monomeric Al.
	TO cite this article:Yang Zhonglian,Gao Baoyu,Yue Qinyan. Coagulation performance and residual aluminum speciation of Al2(SO4)3 and polyaluminum chloride (PAC) in Yellow River water treatment[OL].[ 8 April 2010] http://en.paper.edu.cn/en_releasepaper/content/41721


	9. Modeling storm water runoff from green roofs with HYDRUS-1D
	John Leju Celestino Ladu,Paul Ladu Demetry,Thomas Oromo Henry,Xia Lijun
	Environmental Science and Techology 04 March 2010
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	Abstract:A study was carried on the effectiveness of green roofs to abate Storm water using computer simulation. In this study, the storm water performance was simulated for a modular block green roof using a packaged soil moisture simulation, HYDRUS-1D, with simulation results verified by study site data. Simulations were run using HYDRUS-1D for 24-h design storms to determine peak flow, retention and detention time for runoff. Storm data collected as part of a green roof study were used to validate HYDRUS-simulated runoff. The study site consisted of a 37 m2 (400 ft2) modular block green roof containing engineered soil and vegetation including several Sedum species. The study revealed that rainfall depth per storm strongly influences the performance of green roofs for storm water abatement, providing complete retention of small storms (<2.54 cm) and detention for larger storms, assuming the measured average moisture content (10%) as the antecedent condition.
	TO cite this article:John Leju Celestino Ladu,Paul Ladu Demetry,Thomas Oromo Henry, et al. Modeling storm water runoff from green roofs with HYDRUS-1D[OL].[ 4 March 2010] http://en.paper.edu.cn/en_releasepaper/content/40410


	10. Effect of arsenic on flavonoid contents in Pteris species
	Wang Hongbin ,Ye Zhihong
	Environmental Science and Techology 03 February 2010
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	Abstract:Five flavonoids were determined in twco arsenic (As) hyperaccumulators (Pteris multifida and Pteris vittata) and a non-hyperaccumulator (Pteris semipinnata) from uncontaminated and As contaminated sites exposed to different As concentrations under hydroponic conditions by high-performance liquid chromatography (HPLC). The time-course effect of flavonoid induction in P. multifida and P. semipinnata were also studied under 0 and 20 mg As L-1 treatments at different time. There were no significant differences in contents of quercetin, isoquercitrin and kaempferol in the fronds, and also no significant differences in contents of rutin, quercetin, kaempferol and total flavonoids in the roots of the three plants studied under the same As treatment. As for time-course effect, significant differences were observed in contents of rutin, quercetin, hyperin, kaempferol and total flavonoids among times at 20 mg As L-1 treatment. In general, the changes of flavonoid contents in As hyperaccumulators did not directly contribute to As accumulation.
	TO cite this article:Wang Hongbin ,Ye Zhihong . Effect of arsenic on flavonoid contents in Pteris species[OL].[ 3 February 2010] http://en.paper.edu.cn/en_releasepaper/content/39862

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