scholarly journals Land-use impact on selected forms of arsenic and phosphorus in soils of different functions

2017 ◽  
Vol 31 (4) ◽  
pp. 525-537 ◽  
Author(s):  
Andrzej Plak ◽  
Piotr Bartmiński ◽  
Ryszard Dębicki
Keyword(s):  
Land Use ◽  
Sequential Analysis ◽  
Ammonium Phosphate ◽  
Degree Of Contamination ◽  
Anthropogenic Soils ◽  
Aqua Regia ◽  
Different Types ◽  
Land Use Impact ◽  
The Impact ◽  
The Relationship

Abstract The aim of the study was to assess the impact of technosols and geomechanically unchanged soils of the Lublin agglomeration on the concentrations of arsenic and phosphorus, and on selected forms of these elements. Arsenic and phosphorus concentrations were determined in the urban soils of Lublin (Poland), and the relationship between their degree of contamination and different types of land use was estimated. The samples collected were subjected to sequential analysis, using ammonium sulphate, acid ammonium phosphate, oxalate buffer (also with ascorbic acid) and aqua regia for arsenic, and ammonium chloride, sodium hydroxide, hydrochloric acid and aqua regia for phosphorus. The influence of the land use forms was observed in the study. The greatest amount of arsenic (19.62 mg kg−1) was found in the industrial soils of Lublin, while the greatest amount of phosphorus (580.4 mg kg−1) was observed in non-anthropogenic soils (mainly due to the natural accumulation processes of this element). Fractions of arsenic and phosphorus obtained during analysis showed strong differentiation. Amorphic and crystalline fractions of arsenic, bound with iron oxides, proved to have the highest share in the total arsenic pool. The same situation was noted for phosphorus.

Improving Assessments of Another Auditor's Competence

2009 ◽  
Vol 28 (1) ◽  
pp. 53-78 ◽  
Author(s):  
Noel Harding ◽  
Ken T. Trotman
Keyword(s):  
Group Feedback ◽  
Potential Intervention ◽  
Outcome Feedback ◽  
Average Group ◽  
Different Types ◽  
Specific Feedback ◽  
Specific Outcome ◽  
The Impact ◽  
The Relationship ◽  
Audit Effectiveness

SUMMARY: Auditing standards require auditors to assess the competence of their colleagues. However, previous studies have shown that auditors' assessments of their colleagues' competence are inaccurate and overconfident, potentially leading to a reduction in audit effectiveness. In two related studies, we investigate both the process by which these assessments are made and a potential intervention aimed at improving these judgments. In study 1, we investigate the anchors used by senior auditors in assessing the competence of their subordinates and peers, and find that the anchors vary depending on the familiarity of the audit senior with their colleague. These findings inform study 2, which investigates the impact of different types of outcome feedback on auditors' assessments of another auditor's competence. We find that the effects of individual-specific feedback and average-group feedback will be contingent on the nature of the relationship between the assessor and assessee. Specifically, individual-specific outcome feedback is effective in reducing overconfidence when assessing the competence of a colleague with whom the assessor has previously worked, but not an unfamiliar colleague. When assessing the competence of an unfamiliar colleague, we find that average-group outcome feedback is effective in reducing overconfidence. Our results complement and extend earlier theory by showing that individuals, in assessing a colleague's competence, use anchors in addition to the competence of the assessor.

scholarly journals Research on Mediating Mechanisms and the Impact on Food Provision Services in Poor Areas from the Perspective of Stakeholders

2021 ◽  
Vol 18 (19) ◽  
pp. 10510
Author(s):  
Tianwei Geng ◽  
Hai Chen ◽  
Di Liu ◽  
Qinqin Shi ◽  
Hang Zhang
Keyword(s):  
Ecosystem Service ◽  
Behavioral Responses ◽  
The Loess Plateau ◽  
Trade Offs ◽  
Different Types ◽  
Mediating Mechanisms ◽  
The Common ◽  
Food Provision ◽  
The Impact ◽  
The Relationship

Exploring and analyzing the common demands and behavioral responses of different stakeholders is important for revealing the mediating mechanisms of ecosystem service (ES) and realizing the management and sustainable supply of ES. This study took Mizhi County, a poverty-stricken area on the Loess Plateau in China, as an example. First, the main stakeholders, common demands, and behavioral responses in the food provision services were identified. Second, the relationship among stakeholders was analyzed. Finally, this study summarized three types of mediating mechanisms of food provision services and analyzed the influence of the different types of mediating mechanisms. The main conclusions are as follows: (1) Five main stakeholders in the study area were identified: government, farmers, enterprises, cooperatives, and middlemen. (2) Increasing farmers’ income is the common demand of most stakeholders in the study area, and this common demand has different effects on the behavioral responses of different stakeholders. (3) There are three types of mediating mechanisms in the study area: government + farmers mediating corn and mutton, government + enterprises mediating millet, and government + cooperatives mediating apples. On this basis, the effects of the different types of mediating mechanisms on variations in food yield, and trade-offs and synergies in typical townships, were analyzed.

scholarly journals FOREST CERTIFICATION AS A TOOL TO ENSURE THE BALANCE OF FORESTRY LAND USE

2021 ◽  
Vol 71 (3) ◽  
Author(s):  
Stepan Dankevych
Keyword(s):  
Land Use ◽  
Regional Scale ◽  
Environmental Indicators ◽  
Statistical Characteristics ◽  
Forest Certification ◽  
Capital Investments ◽  
Forest Lands ◽  
The Impact ◽  
The Relationship ◽  
Over Time

The problem of ensuring the balanced use of forest lands determines the search for new economic and environmental tools that can influence this process. The need to improve the certification tool as part of the financial and economic mechanism for ensuring balanced forestry land use corresponds to the directions of state policy and European integration intentions of Ukraine, modern requirements of the ecological aspect of forestry land use. The work examines the practice in the field of forest certification in Ukraine from the point of view of balanced land use. Spatial-temporal analysis and assessment of the scale and dynamics of the spread of forest FSC certification in Ukraine has been carried out. The study was formed in three stages: (I) study of changes over time in the volume of forest certification on a national scale, (II) assessment of trends over time for indicators on a regional scale, (III) study of the relationship between individual indicators. The analysis of the impact of FSC-certification of forest management in Ukraine on the environmental indicators of forestry land use based on the results of the correlation between the statistical characteristics of certain economic and environmental indicators, such as the area of certified forests, capital investments, reforestation. Analysis of statistical data showed the relationship between environmental and economic performance over time and changes in specific characteristics on a regional scale. The study makes it possible, on the basis of an objectively existing causal relationship between phenomena and indicators, to identify the course of certain positive or negative processes in forestry land use. Forest certification can play a role in maintaining a balanced use of forest lands, preventing illegal logging, forest degradation and contributing to reforestation and capital investments. The study helps to identify certain key variables that limit the ability of forestry operators to ensure balanced use of forest lands and how forest certification can affect this. Foreign experience in stimulating forest certification has been investigated for the possibility of borrowing the experience of using management tools in order to motivate forest certification in Ukraine. It has been proven that certification is a significant environmental tool for ensuring a balanced level of land use and has the potential for further development.

Energy Efficiency of Vehicles

2020 ◽  
Author(s):  
Doug Carroll
Keyword(s):  
Energy Efficiency ◽  
Scientific Knowledge ◽  
Fuel Economy ◽  
Environmental Consequences ◽  
Energy Models ◽  
The World ◽  
Different Types ◽  
The Impact ◽  
The Relationship ◽  
Rational Decisions

Energy Efficiency of Vehicles educates readers about energy and the environment and the relationship between the energy we use and the environment. The world is at a point in time when people need to make very important decisions about energy in the next few decades. This book enables readers to utilize our scientific knowledge to make good rational decisions. Energy Efficiency of Vehicles provides information on: Calculations related to energy, power, and efficiency, and the impact of using different types of energy on the environment. Environmental consequences of consuming energy. Models related to impact of city driving on the energy efficiency and fuel economy of cars and trucks.

ASSESSMENT OF PRODUCTION FUNCTIONS AND ANALYSIS OF THE IMPACT OF PRODUCTION FACTORS ON THE MAIN INDICATORS AGRICULTURE OF THE REPUBLIC OF DAGESTAN

2020 ◽  
Vol 4 (12) ◽  
pp. 38-42
Author(s):  
N. M. CHAPAEV ◽  
Keyword(s):  
Agricultural Production ◽  
Factor Models ◽  
Production Functions ◽  
Agricultural Enterprises ◽  
Republic Of Moldova ◽  
Production Factors ◽  
Different Types ◽  
The Republic ◽  
The Impact ◽  
The Relationship

This article assesses the relationship and dependence between the main economic indicators of agricultural enterprises of the Ministry of agriculture of the Republic of Moldova for different years, models of production functions of different types are constructed. The parameters and characteristics for two-factor models expressing the dependence of agricultural production on the number of people employed in agriculture are given.

scholarly journals Assessing Landscape Ecological Risk Induced by Land-Use/Cover Change in a County in China: A GIS- and Landscape-Metric-Based Approach

2020 ◽  
Vol 12 (21) ◽  
pp. 9037 ◽  
Author(s):  
Jianxiao Liu ◽  
Meilian Wang ◽  
Linchuan Yang
Keyword(s):  
Land Use ◽  
Ecological Risk ◽  
Research Area ◽  
Ecological Vulnerability ◽  
Different Types ◽  
Landscape Ecological ◽  
Global And Local ◽  
The Relationship ◽  
Regional Land ◽  
Resolution Data

Landscape ecological risk assessment (LERA) evaluates different types of potential environmental impacts and their cumulative effects, thereby providing policy insights for sustainable regional land-use and ecosystem management. In a departure from existing literature that heavily relies on low-resolution land-use data for LERA at provincial or municipal scales, this study applies high-resolution land-use data to a relatively small research area (county). In addition, this study modifies the evaluation units of LERA from equal-sized grids to watersheds and refines the ecological vulnerability weight on the basis of finer-resolution data. The main findings are summarized as follows: (1) In 2011–2013, nearly 866 ha of land use in Xiapu County changed; moreover, the construction land, which was mainly concentrated in Songgang Street and Xinan Town, increased the most (340 ha). (2) Landscape ecological risk (LER) was roughly maintained, and areas of high ecological risk were mainly concentrated along the coast. (3) The spatial distribution of LER maintained a relatively aggregated pattern, with no trend toward more aggregated or more dispersed change. This study further discusses the relationship between local LER and land-use change and how to balance global and local LER in planning practices.

scholarly journals Effects of Spur Dikes on Water Flow Diversity and Fish Aggregation

Water ◽  
2019 ◽  
Vol 11 (9) ◽  
pp. 1822
Author(s):  
Tingjie Huang ◽  
Yan Lu ◽  
Huaixiang Liu
Keyword(s):  
Water Flow ◽  
Diversity Index ◽  
Spur Dike ◽  
Rock Fill ◽  
Aggregation Rate ◽  
Different Types ◽  
Spur Dikes ◽  
Fish Aggregation ◽  
The Impact ◽  
The Relationship

As a typical waterway modification, the spur dike narrows the water cross section, which increases the flow velocity and flushes the riverbed. Meanwhile, it also protects ecological diversity and improves river habitat. Different types of spur dikes could greatly impact the interaction between flow structure and local geomorphology, which in turn affects the evolution of river aquatic habitats. Four different types of spur dikes—including rock-fill, permeable, w-shaped rock-fill, and w-shaped permeable—were evaluated using flume experiments for spur dike hydrodynamics and fish aggregation effects. Based on Shannon’s entropy, an index for calculating water flow diversity is proposed. Additionally, the impact of the different spur dikes on water flow diversity and the relationship between water flow diversity and fish aggregation effects were studied. The water flow diversity index around the spur dike varied from 1.13 to 2.96. The average aggregation rate of test fish around the spur dike was 5% to 28%, and the attraction effect increased with increasing water flow diversity. Furthermore, we plotted the relationship between water flow diversity index and average fish aggregation rate. A fish hydroacoustic study conducted on the Laohutan fish-bone dike in the Dongliu reach of downstream Yangtze River showed that the fish aggregation effect of the permeable spur dike was greater than the rock-fill spur dike. These research results could provide theoretical support for habitat heterogeneity research and ecologically optimal design of spur dikes.

scholarly journals Sustainable Public Procurement: The Impact of Ability, Motivation, and Opportunity on the Implementation of Different Types of Sustainable Public Procurement

2019 ◽  
Vol 11 (19) ◽  
pp. 5215 ◽  
Author(s):  
Jolien Grandia ◽  
Dylan Voncken
Keyword(s):  
Circular Economy ◽  
Online Survey ◽  
Public Procurement ◽  
Social Return On Investment ◽  
Different Types ◽  
Green Public Procurement ◽  
Public Organisations ◽  
The Impact ◽  
The Relationship ◽  
International Social

Public organisations develop sustainable public procurement (SPP) policies to compel suppliers to contribute to societal goals. Studies show that the ability, motivation, and opportunity that procurers have to procure in a sustainable manner affect the uptake of SPP. Most studies into SPP examine these factors only in the context of one type of SPP (e.g., green procurement). The goal of this paper is therefore to examine the relationship between ability, motivation, and opportunity and six types of SPP: (1) green public procurement, (2) social return on investment, (3) circular economy, (4) bio-based public procurement, (5) innovation-oriented public procurement and (6) international social criteria. An online survey was administered amongst procurers working in Dutch public organisations. The research shows that ability, motivation, and opportunity affect Green Public Procurement (GPP). Opportunity did affect green public procurement, innovation-oriented public procurement and circular economy, but not the other types of SPP. We were unable to identify an antecedent of more social types of SPP in this research. This research shows that findings based on GPP cannot be directly generalized to other types of SPP, and that there is a need for research into the antecedents of social types of SPP.

scholarly journals The Relationship between Soil Moisture and LAI in Different Types of Soil in Central Eastern China

2016 ◽  
Vol 17 (11) ◽  
pp. 2733-2742 ◽  
Author(s):  
Li Liu ◽  
Renhe Zhang ◽  
Zhiyan Zuo
Keyword(s):  
Particle Size ◽  
Soil Moisture ◽  
Soil Water ◽  
Water Retention ◽  
Eastern China ◽  
Soil Water Retention ◽  
Different Types ◽  
Central Eastern ◽  
The Impact ◽  
The Relationship

Abstract As important parameters in the land–atmosphere system, both soil moisture (SM) and vegetation play a significant role in land–atmosphere interactions. Using observational data from clay and sand stations over central eastern China, the relationship between leaf area index (LAI) and SM (LAI–SM) in different types of soil was investigated. The results show that the LAI–SM correlation is significantly positive in clay but not significant in sand. The physical causes for the discrepant LAI–SM correlations in different types of soil were explored from the perspectives of evapotranspiration (ET) and soil water retention. In clay stations, increasing LAI is associated with greater soil-water-retention capacity. Although the increasing LAI corresponds to increasing ET, the impact of ET on SM is weak because of the small particle size of soil. Consequently, the LAI–SM relationship in clay is significantly positive. In sand stations, ET is negatively correlated with SM owing to the large soil particle size, resulting in a negative LAI–SM correlation in sand. However, soil water retention is weakened by the increased LAI, which may be an important factor causing the insignificant LAI–SM correlation in sand.

scholarly journals Exploring the Connections between Land Use and Transportation: A Case Study of Shaheb Bazar to Rail Gate Road, Rajshahi City

2019 ◽  
Vol 10 (1) ◽  
pp. 30-40 ◽  
Author(s):  
Dulal Sarker ◽  
Abdur Rouf Khan ◽  
Muhaiminul Islam
Keyword(s):  
Land Use ◽  
Traffic Congestion ◽  
Management Strategies ◽  
Travel Behaviour ◽  
Reciprocal Relationship ◽  
Land Use Pattern ◽  
Common Technique ◽  
The Impact ◽  
The Relationship ◽  
Rajshahi City

Abstract Land use-transportation comprehensive planning has become an increasingly common technique in regional and sub-regional planning processes. Since land use management strategies act as an effective tool to achieve transportation planning objectives, it is important to identify the relationship between land use pattern and travel behaviour. This study examined the relationship between transportation and land use in Rajshahi city. Rajshahi is a major urban, commercial and educational centre of Bangladesh. In Rajshahi, Shaheb bazaar zero points to New Market road is one of the most important roads. After construction of this road in 2013 intense development has taken place beside it. To identify this primary relationship data has been collected from different types of field survey. Then the impact of land use and transportation has been determined by comparing with the previous database. The findings of the study show that there exist a reciprocal relationship between land use and transportation system and the impacts on both. The study also notes that the impact of transportation on land use is more than the impact of land use on transportation. The study will help to control the haphazard growth and traffic congestion of the concerned area in the future.

Sign in / Sign up

Export Citation Format

Share Document