The impact of agricultural pollutants in six drinking water reservoirs

1999 ◽  
Vol 40 (2) ◽  
pp. 11-17 ◽  
Author(s):  
A. Tanik ◽  
B. Beler Baykal ◽  
I. E. Gonenc

Water is supplied in the Greater Istanbul Metropolitan Area from the surface water of six main reservoirs. The present land use in the catchment areas of the reservoirs indicates that the area devoted to agricultural activities and to forests and meadows varies between 73 and 97% and that only a minor percentage, 1-26%, is devoted to settlements and industries. In contrast to the land use profile, the current environmental evaluation of the catchment areas reveals that point sources dominate over diffuse sources. However, this trend is expected to be reversed in the near future, making diffuse sources and control of fertilizers and pesticides the most significant issue. Pollutant loads regarding pesticides and fertilizers are calculated from unit loads based on area. These pollutants are observed to have a negative impact on water quality in terms of eutrophication and toxicity. In this paper, the status of fertilizers and pesticides are addressed and some protective measures for reducing the impact of agricultural pollutants in the reservoirs are recommended.

2019 ◽  
Vol 02 ◽  
pp. 19-26

The article aimed to investigate the effects of socio-economic and demographic characteristics of the households, the land area, and the occupation of household members in Lac Duong district, Lam Dong province, on the change in purpose of land use. The data for this analysis were collected in 2016 by surveying of 340 farm households in two administrative divisions (Dasar commune and Lac Duong town, Lac Duong district). The paper used the Probit regression method to measure the impact of independent variables on the probability of farm households changing land use purposes. The results showed that other production potentials on the land were maintained despite the limited use of land and income, which directly affected the decision to change the land use of farmers. The status of Lac Duong district affected the purpose of land use. The current context of the district suggested that this district is still a rural area, not strongly affected by urbanization, although the location is very close to Da Lat city and this district has large area of farmland. It is not necessary to change the land use purpose. Farmers can use advanced production methods such as hi-tech agriculture, urban agriculture, and agro-tourism. The further confirmation of results presented here from future studies is necessary.


2020 ◽  
Vol 10 (4) ◽  
pp. 144-167
Author(s):  
Saglar Ochirova ◽  
Vladislav Starzhenetskiy

The negative impact of the economic sanctions is not limited to the sphere of substantive law; it also extends to issues related to dispute resolution. Trying to achieve a fair resolution of disputes sanctioned persons may face many obstacles literally at every stage of the proceedings, starting with problems related to payment of arbitration fees, searching for counsels and arbitrators who are often reluctant to taking corresponding sanctions risks, and ending with the stage of enforcement of a judgment or an arbitral award. Under these conditions, the conduct of court or arbitration proceedings, if theoretically possible, in practice will be associated with substantial organizational difficulties, delays in consideration of a case and significant additional costs. In this regard the authors, based on the foreign and Russian experience, analyze advantages and disadvantages of various options for resolving the disputes involving sanctioned persons, including maintaining the former procedure for resolving disputes, transferring disputes to a neutral or domestic jurisdictions, as well as the latest legislative amendments, namely provisions of the Russian Arbitrazh Procedure Code expanding the exclusive jurisdiction of Russian arbitrazh (commercial) courts which have entered into force in June 2020. Maintaining the status quo between parties to a dispute provides a high degree of legal certainty but does not take into account the potentially serious breach of sanctioned persons’ rights. While the transfer of dispute resolution to the domestic jurisdiction allows the latter to ensure the protection of their rights, but, in turn, carries the risks of violating the existing balance in relations between the parties, refusal to recognize and enforce a future judgement in foreign jurisdictions and etc. Given the impossibility to foresee in advance the extension of restrictive measures to parties of a contract and character of such measures, perhaps the optimal solution could be the so-called cascade arbitration clauses, providing for variability of actions in certain cases, in particular: 1) choice of alternative forum; 2) establishing additional requirements for the neutrality of arbitrators; 3) waiver of the parties to submit disputes to jurisdictions that cannot provide equal and impartial resolution of the dispute in new circumstances. In addition, the parties are strongly encouraged to carefully consider the choice of law provisions, including choice of law applicable to the arbitration agreement.


2021 ◽  
pp. 115-128
Author(s):  
Yoshihiko Okabe ◽  
◽  
Orest Furdychko ◽  
Oksana Drebot ◽  
Nina Palianychko ◽  
...  

The COVID-19 pandemic, creating massive social and economic challenges, has started additional risks in ensuring balanced forest land use at the national, regional, and global levels. In this regard, the issues of preserving ecosystems and improving the well-being of citizens, avoiding the risk of deforestation and degradation of forests due to the negative impact of the pandemic on the economy of the forestry sector have become relevant. The article's purpose is a theoretical and methodological substantiation of ensuring a balanced use of forestry lands in the context of the COVID-19 pandemic, which is associated with economic regulation, investments, and the level of financial support. The object of this study is five state forestry enterprises of the Small Polissia region of Ukraine, referred to the jurisdiction of the State Forestry Agency. The main economic problems and financial needs of the studied state forestry enterprises were identified by analyzing the dynamics of their income, the level of depreciation of fixed assets, the volume of capital investments, labor productivity, and workers' wages. Based on the analysis of reporting indicators of state forestry enterprises in the Small Polissia region of Ukraine, conceptual frameworks for coordinating efforts to ensure the balanced use of forestry lands in Ukraine have been prepared. Measures were proposed to help mitigate the impact of the COVID-19 pandemic on the social and economic dimensions of forestry land use. Recommendations for financing forestry activities, accelerating transformational changes in investment support of the forestry industry, revising the tax burden on state forestry enterprises have been substantiated. Balanced forest land use can reduce the risk of future pandemics. Therefore, its financing and incentives based on economic preferences should be a public policy priority on sustainable development.


2020 ◽  
Vol 65 (3) ◽  
pp. 31-39
Author(s):  
A. Lyaginskaya ◽  
N. Shandala ◽  
S. Kiselev ◽  
A. Ermalitskiy ◽  
D. Isaev ◽  
...  

Purpose: Purpose of this report is to assess the health status of the residents of the town of Snezhnogorsk, located in the impact area of the shipyard (SRZ Nerpa) involved in the decommission and dismantlement of the floating technical base Lepse (PTB Lepse). Material and method: The following parameters were assessed as public health indicators: total primary and chronic primary morbidity of adult and children population, child disability, reproductive health in terms of the status of pregnant women and newborns, general and child mortality. Annual external radiation background values were evaluated along with contents in soil and water of manmade radionuclides, such as 137Cs and 90Sr, and natural ones, such as 226Ra, 223Th, 40K and 235U. Results: The health of the population of the town of Snezhnogorsk, being measured by incidence indicators and reproductive health, is lower than that in the country as a whole: the adult morbidity (667.7 ± 4.2 and 454.2 ± 19.8 per 1000 residents respectively) and child morbidity (3336.2 and 2052.3 ± 194.4 per 1000 residents respectively) is higher; the frequency of adverse pregnancy outcomes (stillbirth, early neonatal fetal death, spontaneous abortions) is also higher – 86.2 ± 18.4 and 46.6 per 1000 residents respectively. Conclusion: The main causes of the negative impact on the health of the population of the town of Snezhnogorsk are climatic and geographical conditions of the Kola Arctic and the presence of medium-light iodine deficiency (goiter endemia).


1999 ◽  
Vol 40 (2) ◽  
pp. 1-10 ◽  
Author(s):  
R. Meissner ◽  
J. Seeger ◽  
H. Rupp ◽  
H. Balla

To study and predict environmental impacts of land use changes on water quality we conducted different types of lysimeter experiments. All of them are linked to representative experimental catchment areas in the field. This allows the verification and extrapolation of lysimeter results. The objective of this paper is to discuss a strategy for using and scaling-up of lysimeter results to a field and catchment scale. It will be shown that the N-loss determined with lysimeters falls within the variation of N-balance based model calculations, and also within ground water recharge rates calculated with models commonly used in hydrology. Extrapolation of lysimeter data to a catchment with similar soils provides a reliable basis for estimating the N-leaching caused by a change in agricultural land use. On the basis of the N-loss from the soil and the N-load of the stream, the calculations show that an increase in the proportion of one year rotation fallow from 10 to 25% results in nearly a 10% increase in the N-load of the stream. However, from the point of view of protecting drinking water quality, rotation fallow for one year is not recommended because of the resulting intensified leaching of nitrates.


2020 ◽  
Vol 12 (5) ◽  
pp. 1773 ◽  
Author(s):  
Yu Shi ◽  
Rui Han ◽  
Luo Guo

The exploitation, utilization, and protection of land resources are some of the great social problems during the process of rapid urbanization in China. The status of land use directly affects ecosystem health (ESH). The evaluation of ESH and the spatial correlations between urbanization caused by human interference help us to analyze the influence of urbanization on ecosystems and also provide new insight into reasonable and scientific resource management. In this study, we evaluated the ESH of Gannan, in Jiangxi Province, China, based on ecosystem service values (ESV) and selected a series of indicators to detect the impact of urbanization on ecosystem health in 1990, 1995, 2000, 2005, 2010. and 2015. Remote sensing (RS) and the Geographic Information System (GIS) were used as processing tools to calculate basic data and to map the results based on different terrain gradients. The results show that ecosystem health suffered a downward trend from 1990 to 2015. Especially, the area proportion at an unhealthy level and average health (ave-health) level increased prominently, and the area of a well state decreased. Further, the results indicate that urbanization had a negative impact on ESH. The degree of a negative correlation increases with the process of urban sprawl. In addition, we found that from 1990 to 2015, the area proportion of a degraded level and unhealthy level was the highest on the first terrain gradient, and as the terrain gradient increased, this area proportion also decreased. However, the high interference region occupies a higher proportion in the lower terrain gradient. Consequently, the results could reveal the impact of urbanization on ecosystem health and could provide an even more effective service for a sustainable development.


2018 ◽  
Vol 10 (12) ◽  
pp. 4622 ◽  
Author(s):  
Xin Tong ◽  
Yaowu Wang ◽  
Edwin H. W. Chan ◽  
Qingfeng Zhou

Transit-oriented development (TOD) has been recognised as a sustainable planning approach and that is typically designed for a whole city. Individual land use characteristics and the causations have often been ignored. Therefore, the primary objective of this study was to explore the factors that influence the land use catchment area (LCA) characteristics at a station neighborhood level. First, it contributes a methodology to measure the LCA by introducing a new concept. The density gradient was introduced to generate the scale and compactness degree of each station. Second, it provides a theoretical framework for understanding the causes of different LCAs. The partial least squares (PLS) regression model was employed to explore the accessibility effects. By analysing density gradient curves, it reveals that stations grew to fit the negative exponential function. Regarding the scale and form degree of LCAs, the impact of accessibility before and after a station construction have been corroborated. Moreover, the effects of facilities function before construction, distance from main roads, and elevated stations have been emphasized. The results provide support for a more sophisticated concept of catchment area relating to land use at the level of an individual TOD station, while shedding light on the benefits of those engaged in the future design of TOD with due consideration of the local physical environments.


2019 ◽  
Vol 10 (04) ◽  
pp. 1950015
Author(s):  
BORIS O. K. LOKONON ◽  
AKLESSO Y. G. EGBENDEWE ◽  
NAGA COULIBALY ◽  
CALVIN ATEWAMBA

This paper investigates the impact of climate change on agriculture in the Economic Community of West African States (ECOWAS). To that end, a bio-economic model is built and calibrated on 2004 base year dataset and the potential impact is evaluated on land use and crop production under two representative concentration pathways coupled with three socio-economic scenarios. The findings suggest that land use change may depend on crop types and prevailing future conditions. As of crop production, the results show that paddy rice, oilseeds, sugarcane, cocoa, coffee, and sesame production could experience a decline under both moderate and harsh climate conditions in most cases. Also, doubling crop yields by 2050 could overall mitigate the negative impact of moderate climate change. The magnitude and the direction of the impacts may vary in space and time.


Author(s):  
Andrzej Misztal ◽  
Marcin Kuczera

The impact of land use on the water quality of foothill microcatchment areas The impact of land use on the water quality of foothill microcatchment areas. In this paper a comparison is made between the impact of land use methods on the quality of water in the streams which drain various catchment areas. For this purpose three microcatchments were selected which are located in agricultural, rural settlements, and forested areas. Water samples were physically and chemically analysed in order to determine: nitrates, nitrites, ammonia, phosphates, sulphates, chlorides, calcium, magnesium, dissolved oxygen, reaction and conductivity. The above studies were conducted in the 2006 and 2007. Our analysis of the collected materials allows us to affirm that land use methods have a significant impact on the water quality of the streams which drain the area. Rural settlement has the most negative influence on the water quality, followed by typical agricultural use. Based on the direct quality evaluations of single water samples, it has been found that only water from forested areas can be qualified as belonging to the 1st cleanness class.


2021 ◽  
Vol 13 (6) ◽  
pp. 1179
Author(s):  
Xiufang Zhu ◽  
Ying Liu ◽  
Kun Xu ◽  
Yaozhong Pan

Previous research on the effects of drought on vegetation productivity seldom distinguished the different responses of vegetation ecosystems to drought under different management practices and different land use systems. Studies investigating whether irrigation can buffer the negative impacts of drought on vegetation usually used discontinuous yield data in distribution. In this study, the trends in drought and vegetation productivity in farmlands in the drylands of northern China (DNC) from 2000 to 2018 were studied using the self-calibrated Palmer drought severity index (scPDSI) and enhanced vegetation index (EVI). The differences in the impact of drought on vegetation productivity in irrigated farmland, rainfed farmland, and natural vegetation areas were quantified. The results showed that the growing season scPDSI and EVI showed an increasing trend from 2000 to 2018. Significant correlations between drought anomalies and EVI anomalies were found in both arid drylands and semi-arid drylands. In addition, irrigation mitigated 59.66% of the negative impact caused by drought on irrigated farmland EVI in the growing season. The impact of drought on irrigated farmland EVI in the growing season was 19.98% lower than that on natural vegetation EVI. The impact of drought on natural vegetation EVI was 49.59% lower than that on rainfed farmland EVI. The results of this study refine the vegetation response to drought under different land management practices and land use patterns.


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