The Study of Living and Arable Land Management Model in Phuech-Udom Subdistrict, Lamlukka District, Pathum Thani Province, Thailand

2018 ◽  
Author(s):  
Darunsak Tatiyalapa ◽  
Chaded Khotcharit
1998 ◽  
Vol 25 (12) ◽  
pp. 1185-1198 ◽  
Author(s):  
Ian A. Simpson ◽  
Robert G. Bryant ◽  
Unn Tveraabak
Keyword(s):  

2020 ◽  
Author(s):  
Márton Kiss ◽  
Károly Barta ◽  
Ágnes Gulyás ◽  
Emese Krajcsi ◽  
Andrea Farsang

<p>The recent research and policy efforts on climate change mitigation highlight the need for proper understanding of the effects of many types of land management interventions on greenhouse gas exchange processes. The complexity of carbon and nitrogen cycles, which is the case also for agricultural ecosystems, call for model-based research approaches. These can make the decision-making applications easier as well. The agricultural use of sewage sludge is widespread in many countries. There are a number of case studies about its possible effects on greenhouse gas fluxes under different climatic conditions, but there are not many experiences in relevant model-based assessments. In our contribution, the Biome-BGC MuSo (v.6.) model was used for the investigation of the main characteristics of ecosystem exchange of carbon in arable land of warm dry temperate climate in the Great Plain of Hungary. The Biome-BGC is one of the most widely used biogeochemical models, it is capable of handling different land management activities, have a multilayer soil module and enable a quite detailed ecophysiological parameterization, which make it suitable for the targeted study. The results of laboratory analyses of soil profiles of the study area were used for the parameterization (element contents, organic matter, etc.). The poster presents the first results of the integrated measurement and modelling research work.</p>


Author(s):  
Volodymyr Artamonov ◽  
Maryna Vasylenko

Peculiarities of natural conditions of the territory of Ukraine have historically determined mainly the agricultural use of its lands, the indirect consequence of which was the formation of agro-landscapes as a specific form of spatial realization of anthropogenic activity. The study of agrolandscapes, a comprehensive assessment of their condition and development trends, development and implementation of adequate land management solutions are a key task to avoid degradation, especially arable land. In the context of the above, the shortcomings of modern proposals and indicators for assessing the state of agricultural landscapes and their land management are considered and identified. Concerns about the recommendations of domestic scientists and practitioners to transform about 12 million hectares of arable land into other lands are justified. The motivation for this decision was the idea of excessive plowing of the territory of Ukraine, although world experience provides positive evidence of successful agriculture, even under such conditions. Allegations of insufficient study of the problem of land management formation of sustainable agrolandscapes are given. It is proposed to use the term "sustainable" for the agro-landscape, the state of which corresponds to the ecological and social-industrial conditions of land use. Systematic analysis of the structural components (lands) of the agro-landscape revealed the significant role of their interaction in creating and maintaining a microclimate favorable for crop production in adverse natural conditions. The legitimacy and expediency and practical efficiency of using the spatial-functional method of land management formation of the stability of agro-landscapes are substantiated. 


2021 ◽  
Vol 13 (19) ◽  
pp. 10591
Author(s):  
Xin Yan ◽  
Yuejian Wang ◽  
Guang Yang ◽  
Na Liao ◽  
Fadong Li

The scale of agricultural land management was scientifically measured to provide a theoretical reference for improving the efficiency of agricultural land utilization, optimizing the industrial structure, and effectively solving the “three rural problems”. Based on 368 microfarmers’ agricultural land management questionnaire responses, the Cobb–Douglas production function was used to measure the average household size in different zones of Shawan City, Xinjiang, and then to calculate the total scale of moderate management in the region, and to divide the supplementary and reduced zones of arable land. The proposed countermeasures and suggestions for achieving the scale of moderate management from the perspectives of both people and land are presented. The results show the following: (1) the average suitable operating scales of households in the hilly area, the agricultural area in the oasis plain, and the oasis–desert interlace area were 5.15, 9.28, and 7.74 ha, respectively. (2) The moderate total scales of operation in the low hilly area, the middle oasis plain agricultural area, and the lower oasis–desert ecotone were 60,380, 112,510, and 115,500 ha, respectively. (3) Two areas, the low mountainous and hilly areas and the oasis plain farming areas, are supplementary areas of arable land, which should be supplemented by improving the management capacity of farmers, cultivating two new agricultural business entities, increasing land transfers, developing modern agriculture, and reducing the degree of fragmentation of arable land. The oasis–desert staggered area is the area where the scale of arable land is reduced. We should vigorously implement the work of retreating land and reducing water, and guide farmers to engage in secondary and tertiary industries so as to reduce the scale of arable land.


2009 ◽  
Vol 6 (4) ◽  
pp. 5565-5601 ◽  
Author(s):  
W. Korres ◽  
C. N. Koyama ◽  
P. Fiener ◽  
K. Schneider

Abstract. Soil moisture is one of the fundamental variables in hydrology, meteorology and agriculture. Nevertheless, its spatio-temporal patterns in agriculturally used landscapes affected by multiple natural (rainfall, soil, topography etc.) and agronomic (fertilisation, soil management etc.) factors are often not well known. The aim of this study is to determine the dominant factors governing the spatio-temporal patterns of surface soil moisture in a grassland and an arable land test site within the Rur catchment in Western Germany. Surface soil moisture (0–6 cm) has been measured in an approx. 50×50 m grid at 14 and 17 dates (May 2007 to November 2008) in both test sites. To analyse spatio-temporal patterns of surface soil moisture, an Empirical Orthogonal Function (EOF) analysis was applied and the results were correlated with parameters derived from topography, soil, vegetation and land management to connect the pattern to related factors and processes. For the grassland test site, the analysis results in one significant spatial structure (first EOF), which explains about 57.5% of the spatial variability connected to soil properties and topography. The weight of the first spatial EOF is stronger on wet days. The highest temporal variability can be found in locations with a high percentage of soil organic carbon (SOC). For the arable land test site, the analysis yields two significant spatial structures, the first EOF, explaining 38.4% of the spatial variability, shows a highly significant correlation to soil properties, namely soil texture. The second EOF, explaining 28.3% of the spatial variability, is connected to differences in land management. The soil moisture in the arable land test site varies more during dry and wet periods on locations with low porosity.


2016 ◽  
Vol 13 (5) ◽  
pp. 1519-1536 ◽  
Author(s):  
Maria Stergiadi ◽  
Marcel van der Perk ◽  
Ton C. M. de Nijs ◽  
Marc F. P. Bierkens

Abstract. Climate change and land management practices are projected to significantly affect soil organic carbon (SOC) dynamics and dissolved organic carbon (DOC) leaching from soils. In this modelling study, we adopted the Century model to simulate past (1906–2012), present, and future (2013–2100) SOC and DOC levels for sandy and loamy soils typical of northwestern European conditions under three land use types (forest, grassland, and arable land) and several future scenarios addressing climate change and land management change. To our knowledge, this is the first time that the Century model has been applied to assess the effects of climate change and land management on DOC concentrations and leaching rates, which, in combination with SOC, play a major role in metal transport through soil. The simulated current SOC levels were generally in line with the observed values for the different kinds of soil and land use types. The climate change scenarios result in a decrease in both SOC and DOC for the agricultural systems, whereas for the forest systems, SOC is projected to slightly increase and DOC to decrease. An analysis of the sole effects of changes in temperature and changes in precipitation showed that, for SOC, the temperature effect predominates over the precipitation effect, whereas for DOC the precipitation effect is more prominent. A reduction in the application rates of fertilisers under the land management scenario leads to a decrease in the SOC stocks and the DOC leaching rates for the arable land systems, but it has a negligible effect on SOC and DOC levels for the grassland systems. Our study demonstrated the ability of the Century model to simulate climate change and agricultural management effects on SOC dynamics and DOC leaching, providing a robust tool for the assessment of carbon sequestration and the implications for contaminant transport in soils.


Author(s):  
F.P. Rumyantsev ◽  
◽  
L.A Simonova

The paper analyzes the actual use of arable land in agricultural enterprises. The ways of eliminating the identified deficiencies through on-farm land management projects using a comprehensive assessment of arable land are outlined.


2021 ◽  
pp. 325-330
Author(s):  
V.V. Alakoz

Land legislation - the Land Code of the Russian Federation, the Federal Law " Land Management", the Federal Law "Turnover of Agricultural Lands", the Federal Law "State Regulation of Agricultural Lands Fertility" proclaimed the obligation of state authorities, local governments, legal entities and individuals realize their activities with preservation of land as the most important component of the environment and a natural resource, and carry out measures for the reproduction of the fertility of agricultural lands. There are proclamations, but no effective economic, administrative mechanisms and institutions of enforcement to save productive land and soil fertility. Regulations for the environmentally safe use of separately cultivated plots of arable land, contours of hayfields and pastures with spatial identification of the boundaries of their action on the map for land management have not been established – we can see negative impacts of excessive cultivation of arable land. The proposed measures to ensure the fertility of agricultural lands are aimed not at land use with soil-saving agricultural technologies in the process of agricultural activities when growing crops (in accordance with the established regulations), but at restoration of soil fertility after depletion of agricultural land use through reclamation and other measures for agrochemical services. This article proposes to restore the compulsory land management activities in case of identification of lands with water and wind erosion and other negative impacts with the development of regulations for environmentally safe agricultural land use for each field or part of it, the contour of hayfields and pastures exposed to negative impacts of anthropogenic or natural load. It is easier to prevent than to cure.


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