Extracting topographic characteristics of landforms typical of Canadian agricultural landscapes for agri-environmental modeling. I. Methodology

2011 ◽  
Vol 91 (2) ◽  
pp. 251-266 ◽  
Author(s):  
Sheng Li ◽  
David Lobb ◽  
Brian McConkey ◽  
R. A. MacMillan ◽  
Alan Moulin ◽  
...  
Keyword(s):  
Agricultural Land ◽  
Quantitative Measure ◽  
Companion Paper ◽  
Environmental Modeling ◽  
Agricultural Landscapes ◽  
Soil Survey ◽  
Field Soil ◽  
Environmental Models ◽  
Topographic Information ◽  
Topographic Characteristics

Li, S., Lobb, D. A., McConkey, B. G., MacMillan, R. A., Moulin, A. and Fraser, W. R. 2011. Extracting topographic characteristics of landforms typical of Canadian agricultural landscapes for agri-environmental modeling. I. Methodology. Can. J. Soil Sci. 91: 251–266. Soil and topographic information are key inputs for many agri-environmental models and there are linkages between soil and topography at the field scale. A major source of soil data is soil databases established based on field soil survey. Although both soil and topographic information are recorded in field soil surveys, the nominal nature of the topographic data has limited their use in agri-environmental models. In this study, we developed a methodology to extract various topographic derivatives and to classify the landscape into landform elements with distinctive topographic characteristics based on detailed analyses of fine resolution digital elevation models. Data obtained from these analyses were used to calculate a representative two-dimensional hillslope of five segments, each with a defined length and slope gradient. A set of modal hillslopes was developed to describe topographic variability. Additional topographic parameters, ratios and indices were calculated to reflect different aspects of topographic characteristics and also to build connections between different agri-environmental models. In particular, a topographic complexity index was developed as a quantitative measure of the degrees of divergence and convergence. This paper describes the methodology using one site as an example. Application of this methodology to other landforms in agricultural land of Canada is reported in a companion paper.

Use of Soil Survey for Assessing Agricultural Land

Soil Horizons ◽  
1975 ◽  
Vol 16 (4) ◽  
pp. 24
Author(s):  
Lloyd E. Tyler
Keyword(s):  
Agricultural Land ◽  
Soil Survey

scholarly journals Analysis of spatiotemporal changes of agricultural land after the Second World War in Czechia

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Vít Zelinka ◽  
Johana Zacharová ◽  
Jan Skaloš
Keyword(s):  
Land Use ◽  
Agricultural Land ◽  
Population Change ◽  
Temporal Analysis ◽  
Second World War ◽  
Agricultural Landscapes ◽  
German Population ◽  
World War ◽  
Landscape Type ◽  
Second World

AbstractThe term Sudetenland refers to large regions of the former Czechoslovakia that had been dominated by Germans. German population was expelled directly after the Second World War, between 1945 and 1947. Almost three million people left large areas in less than two years. This population change led to a break in the relationship between the people and the landscape. The aim of the study is to compare the trajectories of these changes in agricultural landscapes in lower and higher altitudes, both in depopulated areas and areas with preserved populations. This study included ten sites in the region of Northern Bohemia in Czechia (18,000 ha in total). Five of these sites represent depopulated areas, and the other five areas where populations remained preserved. Changes in the landscape were assessed through a bi-temporal analysis of land use change by using aerial photograph data from time hoirzons of 2018 and 1953. Land use changes from the 1950s to the present are corroborated in the studied depopulated and preserved areas mainly by the trajectory of agricultural land to forest. The results prove that both population displacement and landscape type are important factors that affect landscape changes, especially in agricultural landscapes.

scholarly journals Developing a User Friendly Decision Tool for Agricultural Land Use Allocation at a Regional Scale

2017 ◽  
Vol 11 (5) ◽  
pp. 11 ◽  
Author(s):  
Sumbangan Baja ◽  
Samsu Arif ◽  
Risma Neswati
Keyword(s):  
Land Use ◽  
Land Use Planning ◽  
Agricultural Land ◽  
Land Suitability ◽  
Soil Survey ◽  
Agricultural Land Use ◽  
Suitability Evaluation ◽  
Land Suitability Evaluation ◽  
Land Use Allocation ◽  
User Friendly

Agricultural land use planning should always be guided by a reliable tool to ensure effective decision making in the allocation of land use and activities. The primary aim of this study is to develop a user friendly system on a spatial basis for agricultural land suitability evaluation of four groups of agriculture commodities, including food crops, horticultural crops, perennial (plantation) crops, grazing, and tambak (fish ponds) to guide land use planning. The procedure used is as follows: (i) conducting soil survey based on generated land mapping units; (ii) developing soil database in GIS; and (iii) designing a user friendly system. The data bases of the study were derived from satellite imagery, digital topographic map, soil characteristics at reconnaissance scale, as well as climate data. Land suitability evaluation in this study uses the FAO method. The study produces a spatial based decision support tool called SUFIG-Wilkom that can give decision makers sets of information interactively for land use allocation purposes.This user friendly system is also amenable to various operations in a vector GIS, so that the system may accommodate possible additional assessment of other land use types.

scholarly journals On the Issue of Research of Information Support of Sustainable Agricultural Landscapes Formation

2020 ◽  
Keyword(s):  
Agricultural Land ◽  
Ecological Impact ◽  
Arable Land ◽  
Agricultural Landscapes ◽  
Information Support ◽  
Erosion Processes ◽  
Shelter Belts ◽  
Forest Belts ◽  
Methodological Approaches ◽  
The Creation

Purpose. To characterize the methodological approaches that we develop in the formation of a system of information support for the creation and maintenance of the functioning of modern sustainable agricultural landscapes and to show the results of their implementation on the example of the territory of some agricultural enterprises of the Kharkiv region. Methods. Cartographic, geoinformation analysis, calculation, statistical and mathematical. Results. Some results of the work of the collective on the issues of information support for the creation and maintenance of the functioning of modern sustainable agricultural landscapes. Namely, verification of erosion models, studies of the functionality of shelter belts, the formation of an agroeconet (an extensive network of natural and quasi-natural landscapes) on agricultural land massifs, which ensures the maintenance of stable functioning of meso and macrolevel agrolandscapes, as well as the experience of using magnetic prospecting methods to verify the results of mathematical modeling of erosion processes. Conclusions. A number of methodological approaches to information support of the formation of sustainable agricultural landscapes in the natural and socio-economic conditions of Ukraine have been developed. They relate to the functioning of anti-erosion measures of permanent action, the processes of modern transformation of agro-landscapes, the ecological impact of erosion processes on the environment. The connection between the length of forest belts per unit of arable land and soil erosion is shown. A methodical approach has been developed to estimate the amount of soil washed away from arable land and to calculate the measures necessary to eliminate its harmful effects on the environment.

scholarly journals ORGANIZATION OF SUSTAINABLE AGRICULTURAL LAND USE BASED ON LANDSCAPE ANALYSIS

2020 ◽  
Vol 12 (3) ◽  
pp. 339-348
Author(s):  
Vladimir TATARINTSEV ◽  
◽  
Leonid TATARINTSEV ◽  
Alex MATSYURA ◽  
Andrei BONDAROVICH ◽  
...  
Keyword(s):  
Land Use ◽  
Agricultural Land ◽  
Arable Land ◽  
Agricultural Landscapes ◽  
Landscape Analysis ◽  
Anthropogenic Activity ◽  
Agricultural Land Use ◽  
Agricultural Lands ◽  
Rational Use ◽  
Erosion Processes

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.

scholarly journals Distribution of adventive species Solidago canadensis, Phalacroloma annuum, Ambrosia artemisiifolia, Heracleum sosnowskyi in phytocenoses of Volyn’ Polissya (Ukraine)

2020 ◽  
Vol 28 (4) ◽  
pp. 343-349
Author(s):  
L. V. Oitsius ◽  
H. P. Volovyk ◽  
S. P. Doletskyі ◽  
A. V. Lysytsya
Keyword(s):  
Plant Species ◽  
Agricultural Land ◽  
Agricultural Landscapes ◽  
Ambrosia Artemisiifolia ◽  
Solidago Canadensis ◽  
Drainage Systems ◽  
Adventive Species ◽  
Heracleum Sosnowskyi ◽  
Biological Pollution ◽  
Adventive Flora

Biological pollution of natural phytocenoses by adventive plant species poses is a serious threat to endemic species and species with narrower ecological amplitude in ecosystems around the world. This study presents the results of a study of the composition and distribution of adventive plant species in natural, semi-natural and anthropogenic transformed phytocenoses of Volyn’ Polissya, Ukraine. To clarify the effect of drainage melioration on non-native flora species distribution, a botanical study was carried out during the 2003–2019 vegetation seasons on the territory of four drainage systems. The adventive flora of this unique region of Europe was studied in detail for the first time. In total, 279 non-native plant species were found. They belong to 110 genera and 32 families. The results of studying the systematic, bioecological, range-distributional and phytogenetic structure of adventive species found within agricultural lands and adjacent territories are presented. It was found that 161 species are associated with agricultural production. Of these, 90 species were found directly within the agricultural land, another 71 species were found growing in the adjacent territories. It was found that a significant increase in the number of adventive species on the territory of Volyn’ Polissya is associated with drainage melioration carried out in the 1960–1990s, significant changes in the structure and forms of agro-industrial production, and climatic changes in recent decades. The expansion of agricultural land in this area over the past 50–60 years has led to an increase in the number of adventive species by more than 60%. On the territory of drainage systems used for agricultural activities, more than 40% of the total species composition of the adventive flora of Volyn’ Polissya is represented. The majority of these species originate from arid and sub arid regions of the planet. The transformer plants, Solidago canadensis L. and Phalacroloma annuum (L.) Dumort pose a potential threat to phytocenoses of the described region, as well as the whole of Europe. Of particular interest are the species that in the future may pose a serious threat to natural phyto-diversity and have negative practical consequences for the structure of agricultural landscapes. These are Ambrosia artemisiifolia L. and Heracleum sosnowskyi Manden. In general, modern agro ecosystems are characterized by instability and low ability to resist non-native species. The strongly weedy character of cultivated fields and the presence of abandoned uncultivated lands have caused the rapid spread of adventive vegetation. In order to further optimize the structure of agrolandscapes, it is advisable to monitor and regulate not only expansionary invasive species, which is especially important for preventing biological pollution, but also species whose status has not yet been determined.

scholarly journals Effectiveness of Community-Based Soil and Water Conservation in Improving Soil Property in Damota Area, Southern Ethiopia

2021 ◽  
Vol 2021 ◽  
pp. 1-11
Author(s):  
Mamush Masha ◽  
Teshome Yirgu ◽  
Mulugeta Debele ◽  
Mengie Belayneh
Keyword(s):  
Soil Fertility ◽  
Water Conservation ◽  
Agricultural Land ◽  
Agricultural Landscapes ◽  
Soil And Water Conservation ◽  
Southern Ethiopia ◽  
Conservation Practices ◽  
Community Based ◽  
The Impact ◽  
Soil And Water

Soil and water conservation (SWC) is being advocated as an integral part of agricultural land management as it not only controls/minimizes soil erosion but also restores/rehabilitates the degraded lands. The purpose of this study was to evaluate the impact of soil and water conservation practices in improving soil fertility in the agricultural landscapes of the Damota area, southern Ethiopia. Forty-eight soil samples (both disturbed and core samples) were collected from the conserved and adjacent nonconserved plots. The significance analysis test was performed using analysis of variance. The result of the study showed that higher mean values of soil physicochemical properties were observed in the conserved plot than its nonconserved counterpart. The mean differences of organic carbon, total nitrogen, cation exchange capacity, and exchangeable K+ and Ca2+ between conserved and nonconserved plots were statistically significant at the P < 0.01 level. Besides, available phosphorous and bulk density were significant at P < 0.05 , but the effect of SWC practices was not found significant on soil texture, soil pH, and exchangeable Na+ and Mg2+ content of the soil in the Damota area. Community-based soil and water conservation practices have improved the soil fertility in agricultural landscapes, although significant results have been observed in some fertility indicators. Therefore, strengthening the implementation of conservation measures by participating in all stakeholders is recommended. Supporting physical structures by agronomic and vegetative measures and continued maintenance can bring better results.

scholarly journals Basic principles of reclaimed agricultural landscapes sustainability formation

2021 ◽  
Author(s):  
S. M. Vasilyev ◽  
◽  
A. N. Babichev ◽  
Keyword(s):  
Soil Fertility ◽  
Natural Environment ◽  
Agricultural Landscape ◽  
Agricultural Land ◽  
Arable Land ◽  
Agricultural Landscapes ◽  
Forest Steppe ◽  
Basic Principles ◽  
Moisture Supply ◽  
Irrigated Lands

Purpose: to establish the basic principles of the organization of reclamed agricultural landscapes and to substantiate the use of the agricultural landscape approach in the organization of the territory. Materials and Methods. When preparing this article, the materials of Russian scientists dealing with the issues of soil fertility conservation and ecological sustainability of reclaimed agricultural landscapes were considered. The methods used were analysis, generalization, synthesis and other methods of working with literary sources on this issue. Results. In performing the work, the main principles and indicators were determined, such as productivity, sustainability, the rule of transforming measures for the natural environment, optimization of the agricultural landscape, authenticity, principles of the formation of reclaimed agricultural landscapes, the complexity of the reclamation impact, the required diversity, the uniqueness of the reclamation impact. The basic requirements for the preservation of soil fertility of reclaimed irrigated agricultural landscape have been established. It was found that to maintain ecological balance within the irrigated agricultural landscape, it is necessary to adhere to the indicators of the reclamation load of the natural environment. The limits of agricultural lands saturation in reclaimed agricultural landscapes for various agro-climatic zones have been substantiated and recommended. Conclusions. It has been determined that the coefficient of reclamation loading of irrigated lands, showing the maximum share of irrigated lands that can be irrigated in a particular climatic zone, varies from 0.3 in the forest-steppe zone to 0.60–0.85 in the semi-desert and desert zone. This suggests that with an increase in moisture supply, this indicator decreases, the recommended amount of agricultural land in various agroclimatic zones varies from 30 to 87 %, while the area of arable land should not exceed 20–25 % in a very dry zone, and with an increase in moisture supply, it can increase up to 80 % in the semi-arid zone. The amount of irrigated land in the reclaimed agricultural landscape should not exceed 18–20 %. Irrigated meadows and pastures should account for 1–2 to 5–6 % of the area.

scholarly journals Silicate weathering and CO<sub>2</sub> consumption within agricultural landscapes, the Ohio-Tennessee River Basin, USA

2012 ◽  
Vol 9 (3) ◽  
pp. 941-955 ◽  
Author(s):  
S. K. Fortner ◽  
W. B. Lyons ◽  
A. E. Carey ◽  
M. J. Shipitalo ◽  
S. A. Welch ◽  
...  
Keyword(s):  
River Basin ◽  
Management Practices ◽  
Agricultural Land ◽  
Carbonic Acid ◽  
Agricultural Landscapes ◽  
Total Alkalinity ◽  
Molar Ratio ◽  
Silicate Weathering ◽  
Tennessee River ◽  
Co2 Consumption

Abstract. Myriad studies have shown the extent of human alteration to global biogeochemical cycles. Yet, there is only a limited understanding of the influence that humans have over silicate weathering fluxes; fluxes that have regulated atmospheric carbon dioxide concentrations and global climate over geologic timescales. Natural landscapes have been reshaped into agricultural ones to meet food needs for growing world populations. These processes modify soil properties, alter hydrology, affect erosion, and consequently impact water-soil-rock interactions such as chemical weathering. Dissolved silica (DSi), Ca2+, Mg2+, NO3–, and total alkalinity were measured in water samples collected from five small (0.0065 to 0.383 km2) gauged watersheds at the North Appalachian Experimental Watershed (NAEW) near Coshocton, Ohio, USA. The sampled watersheds in this unglaciated region include: a forested site (70+ year stand), mixed agricultural use (corn, forest, pasture), an unimproved pasture, tilled corn, and a recently (<3 yr) converted no-till corn field. The first three watersheds had perennial streams, but the two corn watersheds only produced runoff during storms and snowmelt. For the perennial streams, total discharge was an important control of dissolved silicate transport. Median DSi yields (2210–3080 kg km−2 yr–1) were similar to the median of annual averages between 1979–2009 for the much larger Ohio-Tennessee River Basin (2560 kg km−2 yr–1). Corn watersheds, which only had surface runoff, had substantially lower DSi yields (<530 kg km−2 yr–1) than the perennial-flow watersheds. The lack of contributions from Si-enriched groundwater largely explained their much lower DSi yields with respect to sites having baseflow. A significant positive correlation between the molar ratio of (Ca2++Mg2+)/alkalinity to DSi in the tilled corn and the forested site suggested, however, that silicate minerals weathered as alkalinity was lost via enhanced nitrification resulting from fertilizer additions to the corn watershed and from leaf litter decomposition in the forest. This same relation was observed in the Ohio-Tennessee River Basin where dominant landuse types include both agricultural lands receiving nitrogenous fertilizers and forests. Greater gains in DSi with respect to alkalinity losses in the Ohio-Tennessee River Basin than in the NAEW sites suggested that soils derived from younger Pleistocene glacial-till may yield more DSi relative to nitrogenous fertilizer applications than the older NAEW soils. Because silicate weathering occurs via acids released from nitrification, CO2 consumption estimates based on the assumption that silicate weathers via carbonic acid alone may be especially over-estimated in fertilized agricultural watersheds with little baseflow (i.e. 67 % overestimated in the corn till watershed). CO2 consumption estimates based on silicate weathering may be as much as 20 % lower than estimates derived from carbonic acid weathering alone for the Ohio-Tennessee River Basin between 1979–2009. Globally, this may mean that younger landscapes with soils favorable for agriculture are susceptible to fertilizer-enhanced silicate weathering. Increases in silicate weathering, however, may be offset by shifts in hydrology resulting from agricultural land management practices or even from soil silica losses in response to repeated acidification.

scholarly journals Tinjauan perubahan cara bercocok tanam pada lanskap agrikultur di desa enclave Taman Nasional Bromo Tengger Semeru, Ngadas, Kabupaten Malang

2019 ◽  
pp. 233
Author(s):  
Dian Kartika Santoso ◽  
Antariksa Antariksa ◽  
Sri Utami
Keyword(s):  
National Park ◽  
Agricultural Landscape ◽  
Agricultural Land ◽  
Agroforestry Systems ◽  
Agricultural Landscapes ◽  
Cultivation System ◽  
Landscape Units ◽  
The Right ◽  
Relationship Of ◽  
The Relationship

A review of cultivation changes in agricultural landscapes in the enclave village of Bromo TenggerSemeru National Park, Ngadas, Malang Regency Ngadas village is one example of an agricultural villagelocated in the mountains. Ngadas village is located in the enclave of Bromo Tengger Semeru National Park(TNBTS) in the Malang Regency, East Java. The dependence of the community on agricultural land makesNgadas have a strong agrarian image. Ngadas people do more activities in the fields than in the house. Asbasic landscape units in the form of mountains, they have a vulnerability if not used wisely. The problem ofvulnerability to erosion in the agricultural landscape, makes Ngadas Village interesting to study. Primarily,regarding the relationship of landscapes and land conservation efforts that must be made to a complexagricultural landscape. Therefore, there is a need for research that focuses on efforts to conserve land, especially in an agricultural landscape. Research is conducted through qualitative methods with spatial andqualitative descriptive comparative analysis. The results of the study show that changes in farming methodshave several disadvantages that can cause land degradation and reduced productivity in each period, includingthe shifting cultivation system to reduce nutrients, upper slopes planted with tubers and monoculture agriculture.Therefore, it is necessary to have the right recommendations, namely planting upper slopes with hard woodplants, planting with polyculture systems, and agroforestry systems applied on the upper slopes.

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