Regional differences in floristic change in South Swedish oak forests as related to soil chemistry and land use

1997 ◽  
Vol 8 (3) ◽  
pp. 329-336 ◽  
Author(s):  
Jörg Brunet ◽  
Ursula Falkengren-Grerup ◽  
Åke Rühling ◽  
Germund Tyler
Keyword(s):  
Land Use ◽  
Soil Chemistry ◽  
Regional Differences ◽  
Oak Forests ◽  
Floristic Change

scholarly journals Impacts of oak deforestation and rainfed cultivation on soil redistribution processes across hillslopes using 137Cs techniques

2021 ◽  
Vol 8 (1) ◽  
Author(s):  
Shamsollah Ayoubi ◽  
Nafiseh Sadeghi ◽  
Farideh Abbaszadeh Afshar ◽  
Mohammad Reza Abdi ◽  
Mojtaba Zeraatpisheh ◽  
...  
Keyword(s):  
Land Use ◽  
Magnetic Susceptibility ◽  
Soil Erosion ◽  
Erosion Rate ◽  
Land Use Changes ◽  
Soil Samples ◽  
Natural Forest ◽  
Oak Forests ◽  
Erosion Rates ◽  
Rainfed Farming

Abstract Background As one of the main components of land-use change, deforestation is considered the greatest threat to global environmental diversity with possible irreversible environmental consequences. Specifically, one example could be the impacts of land-use changes from oak forests into agricultural ecosystems, which may have detrimental impacts on soil mobilization across hillslopes. However, to date, scarce studies are assessing these impacts at different slope positions and soil depths, shedding light on key geomorphological processes. Methods In this research, the Caesium-137 (137Cs) technique was applied to evaluate soil redistribution and soil erosion rates due to the effects of these above-mentioned land-use changes. To achieve this goal, we select a representative area in the Lordegan district, central Iran. 137Cs depth distribution profiles were established in four different hillslope positions after converting natural oak forests to rainfed farming. In each hillslope, soil samples from three depths (0–10, 10–20, and 20–50 cm) and in four different slope positions (summit, shoulder, backslope, and footslope) were taken in three transects of about 20 m away from each other. The activity of 137Cs was determined in all the soil samples (72 soil samples) by a gamma spectrometer. In addition, some physicochemical properties and the magnetic susceptibility (MS) of soil samples were measured. Results Erosion rates reached 51.1 t·ha− 1·yr− 1 in rainfed farming, whereas in the natural forest, the erosion rate was 9.3 t·ha− 1·yr− 1. Magnetic susceptibility was considerably lower in the cultivated land (χhf = 43.5 × 10− 8 m3·kg− 1) than in the natural forest (χhf = 55.1 × 10− 8 m3·kg− 1). The lower soil erosion rate in the natural forest land indicated significantly higher MS in all landform positions except at the summit one, compared to that in the rainfed farming land. The shoulder and summit positions were the most erodible hillslope positions in the natural forest and rainfed farming, respectively. Conclusions We concluded that land-use change and hillslope positions played a key role in eroding the surface soils in this area. Moreover, land management can influence soil erosion intensity and may both mitigate and amplify soil loss.

scholarly journals Optimization of the Weighted Linear Combination Method for Agricultural Land Suitability Evaluation Considering Current Land Use and Regional Differences

2020 ◽  
Vol 12 (23) ◽  
pp. 10134
Author(s):  
Shouqiang Yin ◽  
Jing Li ◽  
Jiaxin Liang ◽  
Kejing Jia ◽  
Zhen Yang ◽  
...  
Keyword(s):  
Land Use ◽  
Regional Differences ◽  
Agricultural Land ◽  
Land Suitability ◽  
Spatial Accessibility ◽  
Combination Method ◽  
Soil Conditions ◽  
Weighted Linear Combination ◽  
Suitability Evaluation ◽  
Land Suitability Evaluation

This study was aimed at optimizing the weighted linear combination method (WLC) for agricultural land suitability evaluation (ALSE) through indicator selection, weight determination, and classification of overall suitability scores in Handan, China. Handan is a representative research area with distinct agricultural advantages and regional differences in land use, where the expansion of construction land has led to a rapid decrease of agricultural land in recent years. Natural factors (topography, climate, soil conditions, and vegetation cover) and socioeconomic factors (land use and spatial accessibility) were selected to establish a more comprehensive evaluation system. The index weight was calculated by the mutual information between index suitability and current land use. The consistency index was used to identify the boundary value dividing the overall suitability score into a suitable category and unsuitable category in each sub-region. The results demonstrated that the optimized WLC-ALSE model outperformed the comparison models using conventional methods in terms of the consistency between the evaluation results and current land use. Owing to the increasing limitations of topography, soil conditions, spatial accessibility, and land use, the proportions of suitable land in Zone 1, Zone 2, and Zone 3 were 77.4%, 67.5%, and 30.9%, respectively. The agricultural land unsuitable for agriculture (14.5%) was less than non-agricultural land suitable for agriculture (7.4%), indicating that agricultural land had low growth potential in Handan. Finally, specific recommendations were made to improve agricultural land suitability, alleviate land use conflicts, and further optimize the model. The results can provide effective guidance for WLC-ALSE and land use decision-making for sustainable agriculture.

Soil chemistry and land use

Endeavour ◽  
1993 ◽  
Vol 17 (3) ◽  
pp. 127-131
Author(s):  
Malcolm S. Cresser ◽  
Anthony C. Edwards ◽  
Zakia Parveen
Keyword(s):  
Land Use ◽  
Soil Chemistry

scholarly journals Will Southern Agriculture Play a Role in a Carbon Market?

2000 ◽  
Vol 32 (2) ◽  
pp. 235-248 ◽  
Author(s):  
Kimberly A. Zeuli ◽  
Jerry R. Skees
Keyword(s):  
Land Use ◽  
Transaction Costs ◽  
Regional Differences ◽  
Conservation Tillage ◽  
Carbon Market ◽  
Institutional Arrangements ◽  
Perverse Incentives ◽  
Market Transaction ◽  
The Government ◽  
The Right

AbstractWhile a carbon market offers substantial opportunities for US agriculture, regional differences in such a market are often ignored. This paper focuses on the advantages and challenges for agriculture in the South. The potential of two promising options are analyzed: conversion from cropland to forests and greater use of conservation tillage. It is argued that the right institutional arrangements can overcome three fundamental challenges to an efficient carbon market: transaction costs, risk, and perverse incentives. Some examples are given, such as the use of a farmer-owned organization and the provision of land use and carbon information by the government.

NMR metabolomics for soil analysis provide complementary, orthogonal data to MIR and traditional soil chemistry approaches - a land use study

2015 ◽  
Vol 53 (9) ◽  
pp. 719-725 ◽  
Author(s):  
Simone Rochfort ◽  
Vilnis Ezernieks ◽  
Pauline Mele ◽  
Matt Kitching
Keyword(s):  
Land Use ◽  
Soil Chemistry ◽  
Soil Analysis ◽  
Nmr Metabolomics

Town and Countryside

2018 ◽  
Author(s):  
Christopher Dyer
Keyword(s):  
Land Use ◽  
Regional Differences ◽  
Urban Economy ◽  
Central Place ◽  
High Status ◽  
Rural Industry ◽  
Spheres Of Influence ◽  
Life Styles ◽  
The City ◽  
Urban Characteristics

The differences between town and country are defined, and their changing fortunes compared from the tenth to the sixteenth centuries. Urban characteristics can be identified through dwellings, high-status buildings, and life styles. Hierarchies of towns, and the influence on the countryside of the various categories of town, can be analysed using the concepts of umland and hinterland, central place and spheres of influence, and von Thunen’s zones of land use around the city. Evidence of interactions between town and country come from the distribution of pottery, stone used for building and artefacts, and supplies of food. Agriculture, including the choice of crops and livestock, was influenced by the towns. Rural industry was not necessarily subordinated to the urban economy, but towns provided goods, services, and culture to country dwellers. There were pronounced regional differences in the degree of urbanization, and the interaction between town and country.

EEC resources and strategies

1987 ◽  
Vol 321 (1561) ◽  
pp. 405-422 ◽  
Keyword(s):  
Land Use ◽  
European Community ◽  
Agricultural Policy ◽  
Common Agricultural Policy ◽  
Regional Differences ◽  
Solid Wastes ◽  
Timber Production ◽  
Potential Sources ◽  
The Common ◽  
Forestry Residues

In common with those of other regions, the major wastes of the European Community (EC) that may be regarded as potential sources of lignocellulose are animal manures, crop and forestry residues, domestic and industrial solid wastes and waste paper. The availability reflects the agricultural policy under the Common Agricultural Policy (CAP) as well as the shortfall in timber production within the EC. Significant regional differences exist due to variations in climate and both agricultural and industrial practices. Of particular importance in future will be policy in respect of land use and/or steps taken to reduce agricultural surpluses.

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