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A Novel Protection and Utilization Pattern for Urban wetland—As an Example of Hemu wetland in Hangzhou, China

Journal of Water Resource and Protection 2015年第4期7卷 300-311页

作者： Nongnong Shi Minger Ye Tongfei Lai Zhiming Yu Yunli Pan Mengying Yu Xiaoqi Zhou School of Life and Environmental Sciences Hangzhou Normal University Hangzhou China School of Agriculture and Biological Technology Zhejiang University Hangzhou China

This paper proposes an innovative plan and its implement strategy of Hemu urban wetland. The plan takes into consideration its historical background and current status, its protection significance, strategies, solutions and support conditions. It highlights the landscape characteristics of rivers and lakes, and restores its historical flood prevention functions and climate regulation for the city. Especially, this paper proposes to achieve the restoration of “Mulberry-sided Fish Pond” farming style—an important agricultural heritage created by the ancestors inside the wetland, which is a unique and creative way to use low land for ecological agriculture and cycling economy. The proposed wetland sewage treatment schemes would be of practical importance to improve and enhance the ecological environment and promote the construction of ecological civilization in the region. The “Two zones—One block and Three complexes” protection and utilization plan is reasonable and feasible. It fully presents the functions of the wetland for its production, living, life forms and ecology, and is characterized by joint protection of the wetland by original residents and social public. This will result in active, instead of passive, wetland protection, like turning a “blood transfusion protection” to “hematopoietic protection”, which reflects the sustainable development. The paper offers valuable information and strategies for planning and development of urban wetland.

关键词： Urban wetland Protection and Utilization Mulberry-Sided Fish Pond Ecosystem Two Zones—One Block and Three Complexes

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Characterization of Springtime Coliform Populations at the End Creek wetland Restoration (Union Co., Oregon, USA): A Three-Year Study

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Natural Resources 2015年第8期6卷 482-490页

作者： Joseph A. Corsini Larry Rob Peters Brian Tarpy Chung Pak Karen Antell Eastern Oregon University La Grande USA Aquinas College Grand Rapids USA

In 2005, a 550-acre tract of agricultural land containing two small streams near La Grande, Oregon was registered in the U.S. Federal wetlands Reserve Program. This designation was part of a plan to reclaim and restore the wetland to its natural state. Initial efforts at the End Creek Restoration Project restored both End Creek and South Fork Willow Creek to a natural course through rechanneling, and several plantings had restored some of the native flora. Since its establishment, the End Creek streams and floodplain have become a reserve for summer steelhead (Oncorhynchus mykiss), a threatened anadromous salmonid, and many migratory birds. The threatened Columbia Spotted Frog has also established itself in some of the ponds. As part of an effort to establish a baseline for water quality, we monitored total springtime coliform and fecal coliform bacteria in three of the End Creek ponds for three years. The results of this study indicate that, throughout any given spring, the numbers of both coliform and fecal coliform bacteria can fluctuate markedly among ponds on any given day, and that in any particular pond the numbers fluctuate from week to week. In addition, our analysis suggests that in early spring, the numbers of these organisms also fluctuate from year to year. The causes of these fluctuations are not well understood, but are expected to reflect both springtime flooding and the migrations of source animals such as waterfowl and cervids. Information gathered from this study will help inform future management activities on the wetland.

关键词： Coliform Fecal Coliform End Creek wetland Restoration

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Implications of Papyrus (<i>Cyperus papyrus</i>L.) Biomass Harvesting on Nutrient Regulation in Nyando Floodplain wetland, Lake Victoria, Kenya

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Open Journal of Ecology 2019年第10期9卷 443-457页

作者： P. J. K. Rongoei S. T. Kariuki

Harvesting of papyrus biomass plays a significant role in regulating ecosystem services of which one of them is nutrient uptake and cycling. Despite Lake Victoria’s wetlands being important, little is understood about its role in nutrient uptake and removal. Although there have been studies done in these wetlands, there is inadequate understanding on the implication of unselective biomass harvesting on the water quality of Lake Vitoria. At the same time, these wetlands are threatened by livelihood-related pressures which are driven by extreme hydrological regimes. This study focused on Nyando floodplain wetland located in the Eastern part of the shores of Lake Victoria which is a lifeline to many rural communities living around the lake. Papyrus biomass harvesting was assessed in two study sites of Nyando wetland and at different seasons in order to determine its implication on nutrient regulating services. Participatory tools, field survey, observation, field measurements and laboratory analysis were used. Harvesting of papyrus removed 530.6 Kg N/g DM/ha/day and 97 Kg P/g DM/ha/day in Ogenya while 771.2 Kg N/g DM/ha/day and 109.2 Kg P/g DM/ha/day were removed in Wasare. However, addition of nutrients to the wetland may lead to the problem of eutrophication especially at the site where interaction of wetland and lake water occurs. Understanding the role of papyrus harvesting patterns is crucial for better planning and management of this complex resource in a changing environment.

关键词： Papyrus Biomass Growth Stages Nutrients Nyando wetland Lake Victoria

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Sediment Quality Assessment of Kavvayi wetland in South Coast India with Special Reference to Phosphate Fractionation and Heavy Metal Contamination

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Journal of Environmental Protection 2015年第11期6卷 1308-1321页

作者： Moonampadiyan Shiji Prabhakar Kavya Puthenveedu Sadasivan Pillai Harikumar Water Quality Division Centre for Water Resources Development and Management Kozhikode India

Sediments play an important role in elemental cycling in the aquatic environment;it can be sensitive indicator for monitoring contaminants in aquatic environments. The heavy metal prominence, the amount and different forms of phosphorous present in the surface sediments of Kavvayi wetland, which is in the south west coast of India was studied and reported in this paper. A total number of 10 surface sediment samples were taken from various regions of Kavvayi Lake and were subjected to heavy metal analysis and also phosphorous fractionation. Phosphorous forms in the sediment samples were determined by the modified sequential extraction procedure and among the inorganic phosphorous pool;Fe and Al bound phosphorous constituted the major portion while the Ca-bound phosphorous constituted the minor part only. Higher concentration of organic phosphorous was also detected in all the samples. The sediment samples were analyzed for heavy metals such as Fe, Mn, Cu, Pb, Cd, Ni, and Zn and the results showed comparatively higher concentration than the background values. The degree of contamination for each station was determined. Sediment pollution load index (PLI) values of the studied area ranged from 0.39 to 2.55 which indicated that the wetland sediments were polluted. Multivariate statistical techniques were applied to evaluate and characterize the analytical data. Spatial distribution maps of phosphorous fractions and heavy metals would help to identify the pollution sources and vulnerable sites.

关键词： Kavvayi wetland Phosphorous Fractions Degree of Contamination Pollution Load Index Multivariate Statistics

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Influence of Vegetation Cover on the Oh Soil Moisture Retrieval Model: A Case Study of the Malinda wetland, Tanzania

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Advances in Remote Sensing 2016年第1期5卷 28-42页

作者： Fridah Kirimi David N. Kuria Frank Thonfeld Esther Amler Kenneth Mubea Salome Misana Gunter Menz Department of Geography University of Bonn Bonn Germany Institute of Geomatics GIS & Remote Sensing Dedan Kimathi University of Technology Nyeri Kenya Department of Geography University of Dar es Salaam Dar es Salaam Tanzania

Soil moisture is an important parameter that drives agriculture, climate and hydrological systems. In addition, retrieval of soil moisture is important in the analysis as well as its influence on these systems. Radar imagery is best suited for this retrieval due to its all-weather capability and independence from solar irradiation. Soil moisture retrieval was done for the Malinda wetland, Tanzania, during two time periods, March and September 2013. The aim of this paper was to analyze soil moisture retrieval performance when vegetation contribution is taken into account. Backscatter values were obtained from TerraSAR-X Spotlight mode imagery taken in March and September 2013. The backscatter values recorded by SAR imagery are influenced by vegetation, soil roughness and soil moisture. Thus, in order to obtain the backscatter due to soil moisture, the roughness and vegetation contribution are determined and decoupled from total backscatter. The roughness parameters were obtained from a Digital Surface Model (DSM) from Unmanned Aerial Vehicle (UAV) photographs whereas the vegetation parameter was obtained by inverting the Water Cloud Model (WCM). Lastly, soil moisture was retrieved using the Oh Model. The coefficient of correlation between the observed and retrieved was 0.39 for the month of March and 0.65 in the month of August. When the vegetation contribution was considered, the r2 for March was 0.64 and that in August was 0.74. The results revealed that accounting for vegetation improved soil moisture retrieval.

关键词： Surface Soil Moisture Oh Model Water Cloud Model wetland TerraSAR-X

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Growth Characteristics of <i>Fuirena umbellata</i>in a Surface Flow Constructed wetland and Its Influence in Nutrients and Faecal Bacteria Removal from Domestic Wastewater in Cameroon

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Journal of Environmental Protection 2017年第2期8卷 171-193页

作者： Martin Lekeufack Théophile Fonkou Etienne Pamo Tedonkeng Laboratory of Applied Botany Department of Plant Biology University of Dschang Dschang Cameroon Laboratory of Animal Feeding and Nutrition Department of Animal Production University of Dschang Dschang Cameroon

Various configurations of vegetated bed systems with a variety of macrophytes have been tested experimentally in Cameroon, for the treatment of domestic wastewater. The aim of this work was to assess the growth and biomass production of Fuirena umbellata (Cyperaceae) and its potentials in the removal of faecal bacteria and nutrients from primarily treated domestic effluent. A wetland vegetated with this macrophyte and a non-vegetated wetland (control) were continuously fed with primarily treated domestic wastewater at an estimated loading rate of 205 Litres/day in dry and rainy seasons for two consecutive years. Physicochemical and microbiological parameters of the effluent were monitored at the inflow and outflows of the wetlands alongside with the growth and productivity attributes of the young plants during each season. The density of plants ranged in the wetland from 17 - 185 plants/m2 and from 11 - 146 plants/m2 respectively during the first and the second years. More biomasses were instead produced in the dry seasons than in the rainy seasons but with no significant differences observed. As for nutrients removal, higher efficiencies were observed in the vegetated wetland (45% - 73%) compared to the non-vegetated control (17% - 66%). Similar trends were observed for the faecal bacteria but with no significant differences between the seasons. However, the vegetated beds were significantly more efficient than the non-vegetated control in the reduction of many physicochemical parameters and faecal bacteria. This varied with the seasons.

关键词： Growth Characteristics Fuirena umbellata Nutrients Faecal Bacteria Removal Surface Flow wetland Local Macrophyte

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Status and Protection of National wetland Parks in the Tibet Autonomous Region

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Journal of Landscape Research 2019年第1期11卷 73-78,86页

作者： YOU Yuhui HU Jingkuo XING Zhen Resources & Environment College Tibet Agriculture & Animal Husbandry University Key Laboratory of Tibetan Forestry Ecological Engineering National Key Station of Field Scientific Observation & Experiment Key Laboratory of Biodiversity Conservation and Vegetation Restoration in Tibet Plateau

This paper summarized the status, the brief history of the construction and development of national wetland parks in the Tibet Autonomous Region, and proposed corresponding measures for their later protection and deve... 详细信息

关键词： Tibet Autonomous Region National wetland parks Status and protection

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Balanced nitrogen economy as a flexible strategy on yield stabilizing and quality of aquatic food crops in wetland ecosystem

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Science China(Life Sciences) 2005年第Z2期48卷 980-987页

作者： A.M.Puste P.K.Sarkar D.K.Das Department of Agronomy Faculty of Agriculture Bidhan Chandra Krishi Viswavidyalaya (Agricultural University) Mohanpur-741 252NadiaWest BengalIndia Department of Agricultural Chemistry and Soil Science Faculty of Agriculture Bidhan Chandra Krishi Viswavidyalaya (Agricultural University) Mohanpur-741 252NadiaWest BengalIndia

In wetland ecosystem, nitrogen along with other elements and its management is most imperative for the production of so many aquatic food, non-food and beneficial medicinal plants and for the improvement of soil and water characteristics. With great significant importance of INM (integrated nutrient management) as sources, emphasizing on management on nitrogen as a key element and its divergence, a case study was undertaken on such aquatic food crops (starch and protein-rich, most popular and remunerative) in the farmers' field of low-lying randomized block design, where, three important aquatic food crops (water chestnut (Trapa bispinosa Roxb.), makhana (Eurya/e ferox Salisb.) and water lily (Nymphaea spp.) as major factor and eleven combinations of organic and inorganic sources of nutrients as sub-factor was considered in the experiment. It revealed from the results that the production of fresh kernels or nuts of water chestnut (8.57 t ha-1), matured nut yield of makhana (3.06 t ha-1) and flower stalks of water-lily as vegetables (6.38 t ha-1) including its nutritional quality (starch, protein, sugar and minerals) was remarkably influenced with the application of both organic (neem oilcake @ 0.2 t ha-1) and inorganic sources (NPK @ 30:20:20 kg ha-1 along with spraying of NPK @ 0.5% each over crop canopy at 20 days interval after transplanting) than the other INM combinations applied to the crops. Among the crops, highest WCYE (water chestnut yield equivalence) exhibited in makhana due to its high price of popped-form in the country, which is being exported to other countries at now. Sole application of both (organic and inorganic sources) with lower range did not produce any significant outcome from the study and exhibited lower value for all the crops.Besides production of food crops, INM also greatly influenced the soil and water characterization and it was favourably reflected in this study. The physico-chemical characteristics of soil (textural class, pH, organic carbon, organic matter, ammoniacal nitrogen,

关键词： aquatic food crops, INM, nitrogen, soil & water characterization, economics, wetland ecosystem.Abbreviations: AAS, Atomic absorption spectrophotometer BOD, Biological oxygen demand COD, Chemical oxygen demand DAT, Days after transplanting eq, Equivalent to GMR, Gross monetary return Mak, makhana MSL, Mean sea level NP. Net profit Rs, Indian Rupees WC, Water chestnut WCYE, Water chestnut yield equivalence WL, Water lily.

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Performance Characteristics of Pollutants along the Longitudinal Profile of a Subsurface Flow Constructed wetland Domestic Sewage Treatment Plant in the University of Lagos, Nigeria

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Journal of Water Resource and Protection 2014年第2期6卷 104-113页

作者： Adelere Ezekiel Adeniran Adetinuke Aina Omolaraeni Oshunrinade Department of Civil & Environmental Engineering and Director of Works & Physical Planning University of Lagos Lagos Nigeria Works and Physical Planning Department University of Lagos Lagos Nigeria

The paper reports the findings of a research work carried out to examine the performance and efficiency of a subsurface constructed wetland (SSFCW) for the treatment of domestic sewage in the University of Lagos (Unilag), Nigeria. The removal patterns and efficiencies of the physical, chemical and biological sewage pollutants parameters of domestic waste water generated within Unilag community by the SSFCW were studied. The wastewater was sampled and analysed along the SSFCW from influent (point1) to effluent (point 11). Total Dissolved Solids (TDS) reduced from 471 mg/l to 11.85 mg/l (97.48%), Turbidity reduced from 108.75 HTU to 0.05HTU (99.95%), Manganese reduced from 6.05 mg/l to 0.61 mg/ (89.92%), Nitrate reduced from 27.5 mg/l to 2.0 mg/l (92.73%), Sulphate reduced from 48.5 mg/l to 28 mg/l (42.27%), Iron reduced from 1.13 mg/l to 0.03 mg/l (97.35%), BOD reduced from 73.14 mg/l to 12.8 mg/l (82.5%), and E-coli reduced from 874 MPN/100 ml to 0.15 MPN/100 ml (99.98%). On the other hand, Dissolved Oxygen content increased along the SSFCW from 3.14 mg/l to 7.49 mg/l (138.54%) while the pH improved from slightly acid level of 6.49 to slightly above neutral level of 7.05 (9.3%). All the parameters at effluent point are within the Nigerian Federal Environmental Protection Agency (FEPA) acceptable standard. The study concludes that the SSFCW is a cheap, efficient and appropriate technology for the treatment of domestic sewage under tropical conditions.

关键词： Subsurface Flow Constructed wetland Domestic Sewage Pollutants Removal

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Measuring benefits of Dianchi Lake wetland based on GIS RS GPS technology

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Ecological Economy 2015年第3期8卷 230-235页

作者： XU Shan LIU Chun-xue WANG Peng-yun Kunming University Yunnan University of Finance and Economics Kunming Agrometeorological Station of Yunnan Province

Based on the collection data of the plants, water quality, soils of Dianchi Lake, and combined high resolution satellite remote sensing images, the paper analyzed evolution law of Dianchi Lake wetland, and evaluated the benefi ts of Dianchi Lake wetland from the perspective of economy, environment, society and zoology. The results showed that the area of wetland and plant community account for 92.2% in lakeside zone, the increase was 141.4% compared with the value of 2007. The total value of evaluated benefi ts of Dianchi wetland increased 3.439 billion yuan, and ecological environment improved gradually.

关键词： Dianchi Lake wetland benefit evaluation

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