scholarly journals Floods and Their Impact on the Environment

2021 ◽  
Vol 4 (2) ◽  
pp. 42-49
Author(s):  
A. F. Mohammad Aldardasawi ◽  
Beytullah Eren

Resources like air and water are present in the Ecosystem for the benefit of biological life, but a slight disturbance in them results in catastrophic calamities; the flood is one of them. Floods are wrecking threats not only to the life of the individuals but also result in long-term destructions to the economy, environment, and the psychological state of the affected individuals. A slight disturbance in a geographical area's climatic conditions and natural cycles like heavy rainfall and extra precipitation result in floods. Other human activities like over urbanization, deforestation to make residential societies, poor drainage systems, poor number of dams and banks are also the reasons behind such drastic calamities. There are many types of floods, but urban floods are more destructive as they affect highly populated areas, and there are more chances of mortalities in such situations. Floods have broad impacts not only socially and economically but also on the environment. Floods affect the agricultural sector by causing over-saturation, infertility, and soil erosion, damaging the crop fields, especially the winter crops. Flood contaminates the groundwater and makes it impure and improper for drinking purposes. Floods contaminate groundwater with pathogenic microbes and result in water-borne diseases, which have detrimental effects on health. The freshwater's aquatic life is also affected by the disturbance of the natural hydrology of the water. According to some reports, Floods have some positive Impacts on aquatic life as it results in nutrient deposition and favorable habitat for most species. Floods also leave after-effects on the microinvertebrates like small insects, which are primary role players in the Ecosystem's food chain. So, the floods are a curse for some and a blessing for others.

Soil Research ◽  
2016 ◽  
Vol 54 (2) ◽  
pp. 207 ◽  
Author(s):  
Marta M. Moreno ◽  
Alicia Cirujeda ◽  
Joaquín Aibar ◽  
Carmen Moreno

Mulch materials of different origin and colour are available in the agricultural sector as sustainable alternatives to the use of polyethylene (PE). Mulching modifies soil temperature and consequently affects crop yields. This work assessed the thermal and productive responses of different mulch materials in two different geo-climatic conditions during a 3-year integrated field study on processing tomato (Lycopersicon esculentum Mill.). Two biodegradable plastic mulches (BD1, BD2), one oxo-degradable material (OB), two types of paper (PP1, PP2) and one barley-straw cover (BS) were compared with two control treatments: black PE and manual weeding (MW). Soil temperature variables (maximum, minimum and mean temperature, soil growing degree-days and soil temperature amplitude) and production variables (marketable and total yield, mean fruit weight) were considered. Thermally, PE could be considered an atypical mulch causing higher temperatures in the soil, but it is not associated with a higher yield. Responses of PE, PP2 and MW were independent of the geo-environmental conditions, whereas OB, BD1 and BD2 had similar thermal and productive responses to each other in different environments. Tomato yield was correlated positively only with the minimum soil temperature, especially when excluding PE.


2014 ◽  
Vol 9 (4) ◽  
pp. 554-566 ◽  
Author(s):  
OO Olubode-Awosola ◽  
HD Van Schalkwyk

The South African government provides access to agricultural land for people not adequately represented in the agricultural sector.  However, the government lacks sufficient funds and institutional infrastructure to provide post-settlement support to the settled developing farmers. A farmer-to-farmer mentorship programme between established and developing farm types has been identified as an institutional arrangement that could complement the government’s efforts. However, at this stage government and other role-players lack frameworks for this type of mentorship programme.This study conceptualises a complementary mentorship alliance that is loosely structured, without the complicated legal and contractual processes involved in corporate business alliances. This alliance will hopefully lead to highly committed joint ventures in the industry in the near future.  The study also provides frameworks within which the role-players could contribute to the success of mentorship programme.


Fibers ◽  
2019 ◽  
Vol 7 (9) ◽  
pp. 75 ◽  
Author(s):  
Vincenzo Fiore ◽  
Elpida Piperopoulos ◽  
Luigi Calabrese

In the last years, natural fibers are increasingly investigated as an oil recovery system in order to overcome the oil spillage phenomena, thus preserving environment and aquatic life. In particular, lignocellulose-based fibers have recently been employed with promising results. In such a context, the aim of this paper is to assess the oil sorption capability of natural fibers extracted from the stem of the giant reed Arundo donax L., a perennial rhizomatous grass belonging to the Poaceae family that grows naturally all around the world thanks to its ability to tolerate different climatic conditions. Sorption tests in several pollutants and water as a reference were carried out. The fibers have absorption capacities that are about five to six times their weight. Depending on the high absorption kinetics, possible applicative interests can be identified. Eventually, depending on the fiber size, adsorption properties were related to the microstructure and morphology of Arundo donax fibers.


Author(s):  
Е.А. Rybak ◽  
◽  
О.О. Rybak ◽  
◽  
◽  
...  

The use of water for various human needs can be considered as an anthropogenic factor affecting water resources. The amount of water consumption is determined by the size of the population, the level of development and the state of housing and communal services, climatic conditions and other factors. The agricultural sector plays a significant role in the economy of the South and North Caucasian Federal Districts. The increase in agricultural production, especially in the southern drylands, is largely due to its reliable and high-quality water supply. A large share of the agricultural sector in the structure of water use determines that the water turnover coefficient in the region as a whole is much lower than the national one. The analysis of open sources revealed the key problems of water consumption in the region and enabled to identify specific measures for revising its structure.


Author(s):  
Elize Van Eeden ◽  
Mariette Liefferink ◽  
Elise Tempellhoff

This article provides an analysis of the water history regarding the Wonderfontein Spruit Catchment in the former Far West Rand in South Africa. The major scope for discussion is a short analysis of environmental ethics and crime in this area in the past, and how it has affected man and environment as analysed from a 21st Century perspective. The Wonderfontein Spruit Catchment forms part of the present-day Merafong municipal area, formerly Carletonville. Although voices of concern have featured prominently since the 1960s and even earlier, no extraordinary ethical approach towards this environment and its inhabitants is recorded in history. Bibliographic sources of the Wonderfontein Spruit Catchment currently number over 5000 entries. Despite this impressive production resulting from especially research, reports and whistle blowing in the past 55 years, the area was exposed to limited and insufficient ethically inspired actions, that should have had the ingredients to confirm a positive approach by primary role players regarding environmental management.


2016 ◽  
pp. 32-38
Author(s):  
H. Dovhal ◽  
N. Voloshyna

Importance of the territory climatic conditions as unpredictable dynamic changes problem that forms a threat to the development of the agricultural sector of the country was investigated. The problem comes from the fact that for food security of agricultural ecosystem it is rather vulnerable to change of climatic parameters, and agriculture belongs to branches which are especially sensitive to climatic changes impact. We analyzed long-term data figures for the period 1995 to 2014, which describe the temperature and moisture regime of Lubny (Poltava region). The main trends and patterns of their dynamics were established, the degree of deviation from the long-term norm was given. The author determined the relationship of the territorial climatic conditions changes and agricultural ecosystem performance and stability and also the potential consequences of the adverse effects. As a result, it was found that the expansion of the growing season crops, due to the increase in temperature and the average value of the classical heat supply plant index, may impair the stability of the agricultural ecosystem complex and reduce its performance. At the same time, one of the adapting agricultural production ways to climate change, which does not require any additional costs, is to optimize the placement of crops due to the harmonization of the production specialization ratio in accordance with the area conditions.


2021 ◽  
Vol 17 (27) ◽  
pp. 218
Author(s):  
Fatima Ezzahra Mengoub ◽  
Caroline Lejars ◽  
Mohammed Rachid Doukkali

Situé dans une zone géographique où les ressources hydriques sont limitées, le Maroc a multiplié les efforts pour gérer ses ressources en eau. Ces efforts se sont concrétisés à travers l’amélioration continue du cadre législatif régissant le secteur de l’eau et s’adaptant aux nouvelles contraintes qu’elles soient climatiques, technologiques et/ou économiques. Dans ce sens, ce travail vise l’évaluation de l’impact de ces interventions publiques sur la croissance agricole et économique observées. La démarche méthodologique adoptée se base sur la méthode de comptabilité de croissance ou « Growth Accounting », développée par Solow en 1957. Elle permet de décomposer la croissance en contribution des facteurs et celle de la productivité. Les résultats de cette étude confirment le rôle primordial que joue l’agriculture en tant que moteur de croissance de l’économie marocaine. Ils montrent également que la contribution de l’eau à la croissance de la valeur ajoutée agricole est de l’ordre de 2% et qu’elle demeure tributaire des conditions climatiques, qui à leur tour changent sous l’effet du réchauffement climatique. Located in a geographical area with limited water resources, Morocco has multiplied its efforts to manage its water resources. These efforts have been materialized through the continuous improvement of the legislative framework governing the water sector and adapting to the new constraints whether they are climatic, technological and/or economic. In this sense, this work aims at evaluating the impact of these public interventions on the observed agricultural and economic growth. The methodological approach adopted is based on the growth accounting method developed by Solow in 1957. It allows for the decomposition of growth into factor contributions and productivity contributions. The results of this study confirm the primary role played by agriculture as an engine of growth in the Moroccan economy. They also show that the contribution of water to the growth of agricultural value added is around 2% and that it remains dependent on climatic conditions which are changing under global warming.


Author(s):  
Zarema Nazirovna GADZHIEVA

The main feature of agricultural production is its direct dependence on natural and climatic conditions that leave their mark on all reproduction processes in the agricultural sector. The article is devoted to the analysis of peculiarities of agricultural production. Shown is the work of governing organs on determination of the correct strategy of development in the study period. The attention is paid to the scientific and technological progress and influence of these factors on the creation of progressive forms of labor organization in Southern Daghestan in the 60–70s of the XX century.


Author(s):  
N. V. Danilova

Climate change is a change of climatic conditions in the global atmosphere and on the Earth in general (or within its individual zones or territories) caused directly or indirectly due by the human activity on the planet, which are overlaid on the natural climatic variations (fluctuations) and ob-served during comparable periods of time.    Both the climate of Ukraine and the global climate are changing, but warming within our terri-tory progresses even faster than in other regions of the Northern Hemisphere. Ukraine in general and southern regions in particular are becoming increasingly vulnerable to climate change – droughts, extremely high temperatures, inefficient precipitation, reduced irrigated area cause of precipitation amount and regime, severer and more long-lasting droughts, reduced water availability. The majority of arable land in Ukraine are located in zones of unstable and insufficient humidity, it is quite possible that for plant growing, especially for growing winter crops and early spring crops, climate change will rather have a positive effect than negative one. Among the main types of cereals millet is the most common one. It is valuable for its groats, which is known by its high eating quality. Millet as a fast-growing crop having a certain agrotechnical importance: it is used as a backup crop for re-sowing dead winter crops and is suitable for stubble and post-harvest sowing, it also can be used as a cover culture for perennial grass. Millet is one of the most drought-resistant and heat-resistant crops. It is able to withstand heat injuries which is very important in arid areas and during dry years, when other grain crops have reduced yield. Millet suffers less from pests and diseases than other crops. The task was to evaluate the agro-climatic conditions of millet crops formation in the central part of Ukraine under conditions of climate change. The study of the impact of climate change on the formation of millet productivity for different time intervals was performed by comparing the data of the RCP scenario and the average long-term climatic and agro-climatic parameters. The in-fluence of agroclimatic conditions on the dynamics of increase of agroecological yield of different levels is also assessed.


Plants ◽  
2020 ◽  
Vol 9 (11) ◽  
pp. 1475
Author(s):  
Patricia Bucki ◽  
Xue Qing ◽  
Pablo Castillo ◽  
Abraham Gamliel ◽  
Svetlana Dobrinin ◽  
...  

Due to Israel’s successful agricultural production and diverse climatic conditions, plant-parasitic nematodes are flourishing. The occurrence of new, previously unidentified species in Israel or of suggested new species worldwide is a consequence of the continuous withdrawal of efficient nematicides. Among plant-parasitic nematodes, migratory endoparasitic species of the genus Pratylenchus are widely distributed in vegetable and crop fields in Israel and are associated with major reductions in quality and yield. This review focuses on the occurrence, distribution, diagnosis, pathogenicity, and phylogeny of all Pratylenchus species recorded over the last few decades on different crops grown throughout Israel—covering early information from nematologists to recent reports involving the use of molecular phylogenetic methodologies. We explore the accepted distinction between Pratylenchus thornei and Pratylenchus mediterraneus isolated from Israel’s northern Negev region, and address the confusion concerning the findings related to these Pratylenchus species. Our recent sampling from the northern Negev revealed the occurrence of both P. thornei and P. mediterraneus on the basis of molecular identification, indicating P. mediterraneus as a sister species of P. thornei and their potential occurrence in a mixed infection. Finally, the efficiencies of common control measures taken to reduce Pratylenchus’ devastating damage in protected crops and field crops is discussed.


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