Abstract Urban wetland is an important ecological infrastructure of the city, which is an important natural system that depends on the sustainable development of the city. It has many ecological and social service functions. Urban wetland ecosystems are currently facing serious pollution, wetland area is reduced, biodiversity is seriously damaged, biological invasion led to the disappearance of the original species and other issues, for these issues proposed to create wetland parks, the establishment of nature reserves, the use of bioremediation of wetlands, Effective wetland information and evaluation system, strengthen legislation enforcement, regulate eco-tourism, strengthen international cooperation, change the mode of operation and other effective measures to restore and protect.

Abstract The sea is the hometown of life, the ocean is closely related to human beings. The ocean accounts for 70.8% of the Earth's area. It absorbs heat from the sun and releases heat into the atmosphere to regulate the climate. Therefore, the climate in the coastal areas is suitable and the environment is beautiful. Since ancient times, the world is densely populated. Forty percent of people live in coastal areas. American Oceanographer Silesia Earl said that our planet is characterized by the ocean's dominating point, weather and climate is also controlled by the ocean-like marine species of the crown and the world, if the ocean changes, the Earth the characteristics will also change. Environmental problems have been plagued by human development problems, in the face of many environmental problems, human development, you need a guiding ideology to avoid causing more difficult to save the environment damage and this is the idea of sustainable development.

Abstract Pesticides play an important role in preventing insect pests and weeds in crops. However, due to the serious threat of pesticide residues to environmental and human health, this paper reviews the hazards of pesticide residues, the mechanism of microbial degradation of pesticides, the factors that affect the degradation of pesticides and the new application of microbial degradation of pesticides.

Abstract This paper summarizes the concept, meaning, meaning and current situation of biodiversity. The main reasons for the reduction of biodiversity are as follows: natural, man-made and institutional reasons, among which man-made causes include habitat loss, excessive exploitation of biological resources, environmental pollution and invasion of alien species. The establishment of a system of natural reserve laws, the establishment of alien species management and regulatory system; in the conservation of sustainable use of biological resources; to strengthen international cooperation and action, the establishment of a comprehensive system of protection, , In order to promote China's biodiversity conservation work.

Abstract In recent years, due to the rapid increase of China's economic level, agriculture and industry have developed vigorously, and the demand for electricity has increased accordingly. Water conservancy project construction investment is also increasing, too much water conservancy construction projects will inevitably affect the natural environment, the human environment. China's water conservancy and hydropower construction is facing a difficult task. In terms of environmental impact, compared with other projects, water conservancy and hydropower projects have prominent characteristics: the impact of a wide geographical area, affecting the population, the local social, economic and ecological environment is huge, the external environment on the project also exert a huge impact The At present, the whole society has paid more and more attention to environmental problems, and the environmental quality has become higher and higher. Environmental problems have become one of the restrictive factors in the construction of water conservancy and hydropower projects. As the human environment continues to deteriorate, the public is increasingly concerned about environmental issues and sustainable development. At the same time, people are also aware that the impact of agricultural water conservancy construction on the environment is also twofold, so avoid or mitigate the adverse effects, Fully rational use, is the water conservancy workers in the construction of agricultural water conservancy planning must be carefully studied and to solve the important issues.

Abstract Interdisciplinary Studies and cooperations are necessary for practical work as well as studies in geodesy. Responsibility is a function of power, impact and knowledge. The more strategically central one's position is in terms of power, influence and knowledge, the higher one’s responsibility is. This is an idea which can be worked out in more detail by using interdisciplinary approaches and distributive models on different levels.- Social traps, Prisoners’ Dilemma situations etc. as pertaining to land, soil, and environment as well as some examples from geodesics and the study of the usage of nature systems like lakes and flood plain areas are discussed regarding responsibility and distribution problems. “Naturalists’ Dilemmas” (or “Enjoyers’ Dilemmas”) are sketched and potentially solved by proposing a viable distribution strategy.

Abstract Forests play a vital role in the natural global carbon cycle by capturing carbon from the atmosphere through photosynthesis and converting it into forest biomass. Forests sequester and stores more carbon than any terrestrial ecosystem and act as sources as well as sinks of CO 2 . However, the increasing rate of deforestation and the impact of changes in land use require a critical and updated look at what is happening in the tropics. This work emphasized the temporal variation of bulk density, carbon (C) and nitrogen (N) stock and concentration in four land-use categories: natural forest, tree plantations, crop-land and degraded soil along elevation gradient and soil depth. The study was conducted in the Central Highlands of Ethiopia, where deforestation and human pressure on native forests are exacerbated and erosion has caused extensive soil loss. We hypothesized that, there is temporal variation of C and N concentrations and stocks in native forest along elevation gradient, land use type, species and soil depth. Carbon and N concentrations and stock and bulk densities in mineral soil were analysed as repeated measures in an irregular vertical space ranging from 0–10 cm, 10–30 cm, 30–50 cm and 50–100 cm, using a linear mixed model approach in two-time scale period 2012 - 2017. Double observations in 2012 and 2017, were made from the forest floor were analysed by a general linear mixed model. There is significant variation in organic carbon and nitrogen stock along elevation gradient for forest floor. Results also indicated that soil depth is more important factor than elevation gradient in native forests, though C and N concentrations and stocks diminished near human settlements. Native forest stored on average more nitrogen than bare soil, cropland and plantations, respectively. Conversion of crop and degraded land into plantations ameliorated soil degradation conditions, but species selection did not affect carbon and nitrogen stocks. Thus, appropriate forest management options should be applied in order to increase productivity and carbon sink of Chilimo dryafromontane forest and adjacent land use. Temporal monitoring and reporting of carbon stock and concentration is also important to understand the role of Chilimo dryafromonate forest in climate change mitigation and adaptation agendas.

Abstract This study aimed to analyze warm-days changes extracted from daily maximum temperature time-series of 71 stations in Turkey during 1961–2016. First, the trend analysis of warm-days events indicated that the annual count of warm-days occurrences has been significance rising by a rate of 1.4 days per decade over more than 90 percent of the studied stations. Thus, there are consistent patterns in daily warming throughout the study area. The spatial maps showed that the lowest frequency in the minimum annual number of warm-days occurred in western areas by a total number of 21 days and its highest occurred in the eastern area by a total number of 35 days. Moreover, the highest frequency in the mean and minimum annual count of warm-days observed in the northwestern lowlands and their frequency has decreased toward the eastern mountainous. Also, the highest range of differences between the annual count of maximum and minimum values has happened in the eastern regions which are characterized by high elevation and the lower existence of atmospheric humidity. Therefore, a higher moisture content of the atmosphere in lowland coastal stations favors severe warm-days and the increased risk of human health.

Abstract   The year 2018 has been declared as the Year of Birds with the aim of celebrating and protecting them. Birds are mysterious, cheerful and a marvellous creation with some unique and peculiar features. They are ecologically crucial in maintaining the balance of many ecosystems by sustaining various food chains and energy cycles. With their colourful bright plumage they enrich the natural scenic beauty of earth. Their migration, foraging, singing, breeding and nesting behaviour is quite astonishing. Birds make a variety of calls, sounds and songs with a language as complex as any spoken words that have many meanings, purposes and uses. Birds are the indicators of climatic conditions, natural calamities and bio-indicators of potential human impact and environmental degradation. Birds are facing continuous natural and anthropogenic threats due to multiple problems in the environment. The unregulated and unsustainable tourism and poaching threatens the habitat of so many game birds. Climate change, chemical use, loss of food source, overharvesting are the other impacts on bird loss. Awareness about stopping of habitat destruction, indiscriminate poaching birds, and regulated bird watching is the need of the time. We need to use more resources and put more sincere efforts for their management and conservation in view of the changing environment. Climate change has already altered the biological life on this planet, it would be interesting to know how climate change threatens bird’s life and survival. That will enable us in true sense to fulfil the objectives of the year of birds. 

Abstract The present research work aimed at analysing the time series and estimation of seasonal growth/ decay of heavy metals dynamics in the vertical subsurface flow constructed wetlands (VSSFCWs) planted with Typha, Phragmites, Vaccha, Arundo and Vetiver on gravel media. Monthly plant and wastewater samples were collected for 15 months from the VSSF CWs. Plant and water samples were pre-treated in the laboratory, digested using diacid and their heavy metal concentrations were determined using atomic absorption spectrophotometer after filtration. The Main results indicated that the maximum uptakes of metals by plant occurred in summer while the minimum plant uptakes were recorded in winter, regardless of metal concentrations applied and the trends showed a slightly stable profile irrespectively to the level of concentration applied. For the adsorption processes of Cr in the media (gravel) of the constructed wetlands, it appeared that this process was not significantly changing as function of time, except for Cr 1.5 ppm.

Abstract Several and diverse native populations of wild grapevines have been reported growing in the States of Puebla, Mexico and Morelos, Central Mexico. After collection, successfully rooted vines were planted in Zumpahuacán, State of Mexico, and since 2013, their fruit were analyzed, mainly in relation to berry-weight and sweetness. Recently, the seed oil content was analyzed. Most berries harvested in 2013, 2014 and 2015 weighted less than 1 g and only berries of accession Puebla-41 (P-41) weighted nearly 2.5 g. On the other hand, most berries had lower than 18°B. Four accessions, three native of Puebla and one from Morelos had the higher fruit production (2.5, 1.5 and 1.4; and 0.68 kg per plant) and might be the genetic material proposed to be planted in Zumpahuacán, Mexico. Seed oil analysis confirmed the presence of linoleic acid as the main fatty acid in Central Mexico wild grape seed oil. Nowadays, the extraction of seed oil in Central Mexico native grapes seems to be the better alternative to interest locals and agro-industrial related companies in conserving and cropping this plant genetic resource.

Abstract A pot experiment was done aimed to improve the chemical properties of a saline-sodic soil using individual application of alfalfa residue and two biochars, produced from sugarcane bagasse and walnut shell and their concomitant application with gypsum, aluminum sulfate and mixture of these two chemical amendments. Organic and chemical amendments were added to the soil at the weighting ratio of 2.5% and as the soil gypsum requirement, respectively. After two months of incubation, soil samples were measured for soil pH, electrical conductivity (EC) and sodium adsorption ratio (SAR) and the results were analyzed by SPSS software applying ANOVA. The results showed that organic amendments caused a reduction in soil pH and enhanced soil EC and SAR; whereas addition of gypsum and/or aluminum sulfate with biochars intensified their regulatory effects. It can be concluded that application of walnut-shell biochar with mixture of gypsum and aluminum sulfate to the saline-sodic soils has the best efficiency to reclaim the chemical soil properties. Soil leaching, as a supplementary procedure, however, is necessary to complete the improving effects of organic and/or chemical application to the soil.

Abstract Currently, the introducing of basalt and natural fibers into different geopolymer swift growth of geopolymers. Despite of geopolymers have good properties such as fire resistance, flame resistance, higher compressive strength and higher durability, they suffer from low tensile strength and flexural strength. Different types of fibers were used to increase flexural strength, tensile strength, fracture toughness and ductility of geopolymers. The current article goals to brief the available earlier studies focused on the effect of basalt fibers and different natural fibers on the properties of geopolymers.