APPLICATION OF SYSTEM DYNAMICS MODEL ON AGRICULTURAL LANDSCAPE

Author(s):  
Anete Zvaigzne ◽  
Andra Blumberga ◽  
Saulius Vasarevičius

Agricultural land comprises an important share of the total terrestrial land. Therefore it plays a crucial role in the health of the so-called foundation of all types of ecosystem services – biodiversity. This research aims at providing a tool for evaluating the state of biodiversity in an agricultural landscape by using different agri-environmental indicators. A system dynamics model is built that encloses agricultural land use parameters, agricultural land use intensity, landscape fragmentation patterns, crop diversity and other aspects that have an important effect on biodiversity in agricultural landscapes. This research is an attempt to use information available for public to assess the degree to which agricultural landscape may benefit from landscape greening activities, changes in crop management activities etc. At the end of this research landscape biodiversity of an intensive farming region in Latvia (Bauska district) will be evaluated.

2020 ◽  
Vol 12 (3) ◽  
pp. 339-348
Author(s):  
Vladimir TATARINTSEV ◽  
◽  
Leonid TATARINTSEV ◽  
Alex MATSYURA ◽  
Andrei BONDAROVICH ◽  
...  

The aim of the work was the landscape analysis of agricultural geographical landscapes in the Altai Territory and elaboration of measures aimed at the rational use of agricultural lands. Environmental and landscape (landscape) approach became the main method of scientific research used in the analysis of modern agricultural landscapes. The cartographic method, using GIS-technologies, made it possible to digitize the obtained materials. Synthesized maps of agro-ecological, natural and other zoning of territories are based on topographic, soil, geobotanical and other thematic maps made during land surveying during the field survey. Retrospective analysis, induction and deduction methods,analysis and synthesis, as well as the abstract-logic method were also used in the work. Our main result was the analysis of land use territory for agricultural enterprise in municipal district of Altai Krai. Exploration of lands indicates a pronounced plant-growing specialization of JSC “Pobeda” with a developed animal breeding direction. Limiting factors affecting the rational use of land are natural and climatic conditions, terrain,unsystematic anthropogenic activity and, as a result, the development of erosion processes. The degree of eroded and deflated arable land is more than 50%, hay and pasture lands are also very unstable. Landscapes have been typified, based on which eleven types of land have been identified and their geomorphological description has been carried out. The first five types of land can be used for agricultural production with limitations compensated by crop technology and erosion control measures, the sixth and seventh types require grassing and, in some cases,conservation, the eighth and ninth types can be partially used for pasture and area valorization; the remaining two are not suitable for agricultural use but should be potentially used for planting and forest management. As a result of the presented transformation of agricultural lands, the structure of cultivated areas has changed. The area of arable land decreased by 877 ha, and of pastures by 365 ha,while the area under hayfields, fallow lands, and forest lands increased by 295, 191, and 875 ha respectively. Low-productive lands were withdrawn from agriculture. We suggested that the sustainability of agricultural land use was mainly caused by the reduction of anthropogenic load and increase in ecological equilibrium of the territory.


2009 ◽  
Vol 33 (1) ◽  
pp. 15-25 ◽  
Author(s):  
Qiping Shen ◽  
Qing Chen ◽  
Bo-sin Tang ◽  
Stanley Yeung ◽  
Yucun Hu ◽  
...  

2003 ◽  
Vol 26 (5) ◽  
pp. 607-618 ◽  
Author(s):  
Chien‐Hwa Yu ◽  
Ching‐Ho Chen ◽  
Cheng‐Fang Lin ◽  
Shiu‐Liang Liaw

2021 ◽  
pp. 8-8
Author(s):  
I. Kupriyanchyk ◽  

The article is devoted to the formation of the institutional environment of ecologically safe agricultural land use through the model of harmonization of ecological and economic interests of the subjects of agricultural land use. The structure of agricultural land use is based on criteria, the content of which represents both economic and environmental interests of society. For example, the landowner (land user) is interested in converting his land into the most economically attractive - arable land, which reflects his private economic interests, and on the other - society is interested in maintaining the optimal state of agricultural landscapes, which in turn provides the optimal ratio of destabilizing, stabilizing and stabilizing reflecting the public environmental interests [7]. Usually such differentiation of interests of subjects of agrarian land use causes situations of impossibility to agree them voluntarily. Therefore, there is an urgent problem in effective regulatory policy in the field of land use, in particular through the formation of the institutional environment of environmentally friendly agricultural land use through the model of harmonization of environmental and economic interests of agricultural land users. In the article, it is clarified that the institutional model of harmonization of ecological and economic interests of subjects of agrarian land use provides for the introduction of tools to eliminate the conflict of ecological and economic interests, which includes a number of tools, levers and techniques, in particular: -adaptation paradigm; formation of ecological consciousness of land users, ecological morality and ethics; development of the organizational and economic mechanism of formation of ecologically safe agrarian land tenures and land uses optimum through a combination of market and state levers of influence; regulatory and legal support of ecological safety of agricultural land use; optimization of the organizational structure of land use management. Keywords. Institutional environment, institutions, ecologically safe agricultural land use, land relations, economic development, ecology.


2019 ◽  
Vol 4 (1) ◽  
pp. 1
Author(s):  
Dian Kartika Santoso ◽  
Antariksa Antariksa ◽  
Sri Utami

<p>ABSTRACT</p><p>People in Ngadas Village have enough time to live in their fields. Therefore, the community build farmhouses to help farming activities. However, as an agricultural landscape, cultivation in Ngadas Village has various dynamics. Changes that occur in the agricultural landscape can be traced through agricultural features formed by the type of agricultural land use. In addition, it can be traced through cultural features that are the result of interactions between human activities and the environment such as farmhouses. Therefore, this study aims to find out the implications of agricultural features on cultural features, especially space in farmhouses. The in-depth interview and observation methods were conducted to identify, then the data obtained were analysed by synchronous and diachronic methods. So, the changes that occur can be determined descriptively. The results of the study show that the culture of shifting cultivation that has become permanent causes the fields to develop along with the changes in the plants that have been planted, the addition of activities and intensity of plant management. More fixed location of the farm more developed and permanent farmhouses has been built. More activities carried out in the fields and the higher intensity of plant management, the wider and more space needed for the fields.</p><p>Keywords: Agrarian culture, Agricultural landscape, Farmhouses</p>


2016 ◽  
Author(s):  
Awoke D. Teshager ◽  
Philip W. Gassman ◽  
Justin T. Schoof ◽  
Silvia Secchi

Abstract. Modeling impacts of agricultural scenarios and climate change on surface water quantity and quality provides useful information for planning effective water, environmental, and land use policies. Despite the significant impacts of agriculture on water quantity and quality, limited literature exists that describes the combined impacts of agricultural land use change and climate change on future bioenergy crop yields and watershed hydrology. In this study, the Soil and Water Assessment Tool (SWAT) eco-hydrological model was used to model the combined impacts of five agricultural land use change scenarios and three downscaled climate pathways (representative concentration pathways, RCPs) that were created from an ensemble of eight atmosphere-ocean general circulation models (AOGCMs). These scenarios were implemented in a well calibrated SWAT model for the Raccoon River watershed (RRW) located in western Iowa. The scenarios were executed for the historical baseline, early-century, mid-century, and late-century periods. The results indicate that historical and more corn intensive agricultural scenarios with higher CO2 emissions consistently result in more water in the streams and greater water quality problems, especially late in the 21st century. Planting more switchgrass, on the other hand, results in less water in the streams and water quality improvements relative to the baseline. For all given agricultural landscapes simulated, all flow, sediment and nutrient outputs increase from early-to-late century periods for the RCP4.5 and RCP8.5 climate scenarios. We also find that corn and switchgrass yields are negatively impacted under RCP4.5 and RCP8.5 scenarios in the mid and late 21st century.


2019 ◽  
Vol 8 (3) ◽  
pp. 2741-2746

Rice is a strategic food commodity in Indonesia, so the availability and consumption needs of rice need to be considered. in line with population growth and the decline in the area of agricultural land also influences the management of rice availability and has the potential to become a rice supply deficit if it is not managed properly. The purpose of this paper is to develop a pattern of relations between rice availability and rice consumption so that a balance occurs in the management of rice availability. The method used is the System Dynamics model, where this method is able to formulate a complex system by utilizing historically existing data to form a model, therefore this approach is expected to form a performance model of balance between rice availability and consumption which can then be simulated to predict needs in the future so that it can be used for faster and more accurate decision making


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