FEATURES OF NATURAL HYDRATION BY THE TYPES OF ARABLE LAND LOCATIONS OF THE SANAA BASIN

2021 ◽  
pp. 38-45
Author(s):  
A. S. ISAEV ◽  
Keyword(s):  
Arable Land ◽  
Field Work ◽  
Climatic Conditions ◽  
Agricultural Products ◽  
Mountain Areas ◽  
Alluvial Sediments ◽  
Moisture Availability ◽  
Intermountain Basin ◽  
Literary Sources ◽  
Relief Element

The aim of the study is to study the possibility of obtaining agricultural products from dry lands in arid climatic conditions of mountain areas, depending on natural moisture availability. The concept of types of arable land locations was introduced. The entire variety of locations of arable land in the Sanaa basin is divided into five types of locations depending on the location of a particular one or another form and relief element. The characteristics of the types of locations of the main wadi, intermountain basin, plain and other forms of relief of the Sanaa basin are given. The methodology for assessing the natural moisture availability of the types of locations of arable land of the main landforms was developed. Based on the materials of experimental field work on drain-forming sites and literary sources, the values of the runoff coefficients of the exits of indigenous rocks, loose eluvial, deluvial-proluvial and alluvial sediments of arable lands were determined and adopted for the calculation of natural moisture availability.

ASSESSMENT OF AGRO CLIMATIC RESOURCES AND NATURAL WATER SUPPLY OF THE SANAA BASIN AREA

2021 ◽  
pp. 21-30
Author(s):  
A. S. ISAEV ◽  
Keyword(s):  
Water Balance ◽  
Climatic Conditions ◽  
Agricultural Products ◽  
Atmospheric Moisture ◽  
Land Productivity ◽  
Mountain Areas ◽  
Moisture Supply ◽  
Dry Farming ◽  
Basin Area

The aim of the study is to study the possibility of obtaining agricultural products from non-irrigated lands in arid climatic conditions of mountain areas, depending on the natural moisture supply. The possibility of assessing the natural moisture supply on the basis of average long-term precipitation, conditional indicators of annual natural atmospheric moisture and the water balance equation is considered. However, with current hydrological knowledge of the Sanaa basin area in the absence of the necessary data for calculating the water balance of the productive soils, there is proposed the a methodology for assessment of components of water balance and calculation of natural moisture provision of arable landson the level of «black box» with an accuracy sufficient for assessment of land productivity under natural moistening and a possibility of intensification of dry farming.

Analiza modului de utilizare a terenurilor în Regiunea de Dezvoltare Nord a Republicii Moldova

2020 ◽  
Author(s):  
Iurie Bejan ◽  
Keyword(s):  
Land Use ◽  
Agricultural Land ◽  
Arable Land ◽  
Current Mode ◽  
Climatic Conditions ◽  
Development Region ◽  
Agro Forestry

The land use has undergone some changes in the last 30 years, by reducing the areas with arable land, converting multi-annual plantations into other categories of land, etc. According to the current mode of land use, the Northern Development Region has a pronounced agricultural profile - 80.3% of the total area represents agricultural land. The spatial differentiations regarding the morphological and agro-climatic conditions allowed the identification within the region of areas with agro-forestry and agro-pastoral specializations.

Prospects for increasing the volume of agricultural production for export due to the expansion and intensification of the use of Russian land resources

2021 ◽  
pp. 40-47
Author(s):  
Gennadiy A. Polunin ◽  
Keyword(s):  
Agricultural Production ◽  
Agricultural Land ◽  
Arable Land ◽  
Agricultural Products ◽  
Land Resources ◽  
The Past ◽  
Federal Districts ◽  
Near Future

The article is devoted to substantiating the prospects for increasing the marginal volumes of agricultural production for export in the next four years. Two scenarios of such production are considered: 1) expansion and 2) intensification of the use of land resources. As part of the development of the first scenario, an analysis of the distribution of unused agricultural land, including arable land, by federal districts was carried out. Also, based on the forecast of the introduction of additional annual volumes of acreage in the subjects of the Federation, the calculation of additional volumes of agricultural production, which can be expected in the next four years, was carried out. The analysis of data on the increase in the yield of export-oriented crops over the past five years has been carried out, in the framework of the second scenario, the calculation of the projected additional yield due to the intensification of agriculture is presented. The results of the study indicate that the intensification of agriculture will have the greatest impact on the growth of production and export of agricultural products in the near future.

DEVELOPMENT OF TECHNOLOGY FOR DEVELOPING ABANDONED AGRICULTURAL LANDS IN TVER REGION

2020 ◽  
Vol 15 (10) ◽  
pp. 1306-1311
Author(s):  
V.I. Berney ◽  
Keyword(s):  
Agricultural Land ◽  
Arable Land ◽  
Agricultural Products ◽  
Agricultural Machinery ◽  
Agricultural Lands ◽  
Tractor Equipment ◽  
Tver Region ◽  
Agricultural Organizations ◽  
Near Future

In the Non-Black Earth Zone of Russia, since the 90s of the last century, the number of tractor and other agricultural machinery has sharply decreased. If in 1990 there were more than 30 thousand tractors of various capacities in the Tver region, then by 2020 there are 4 thousand tractors left in collective agricultural organizations, and approximately the same number of tractors are in private farms. The reduction occurred more than 8 times, with the remaining equipment having an average age of over 12 years. The renewal of tractor equipment in recent years has been happening at a rate of 1-2% per year, at the same time, 7-8% of the remaining tractors are written off annually. Directly connected with such dynamics is the reduction of acreage, which decreased by about 10 times, to 120 thousand hectares. And only in recent years there has been an increase in cultivated areas to 278 thousand hectares. At present, 551 thousand hectares of agricultural land are used for the production of agricultural products, that is, from 2,575 thousand hectares. Half of the agricultural land is arable land. More than 300 thousand hectares of arable land are idle, overgrown with forest, bushes, hogweed. The age of vegetation, forests on abandoned arable land reaches 10 years. In the near future, most of these lands may be completely decommissioned.

China’s arable land wasting problem

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Wensheng Chen
Keyword(s):  
Optimal Allocation ◽  
Arable Land ◽  
Difficult Problem ◽  
Agricultural Products ◽  
Market Demand ◽  
Land Resources ◽  
Content Type ◽  
Consumption Structure ◽  
Resource Endowment ◽  
Agricultural Regions

PurposeChina's population–land contradiction is a crucial issue, and by deeply analyzing causes of wasting arable land, this article recommends some policies to avoid waste.Design/methodology/approachBased on the current high-, middle- and low-class differentiation in the agricultural products' consumption structure against urban residents' rapid income growth, this article proposes that agricultural products with distinctive regional characteristics should be developed according to regional natural agricultural resources and market demand, so as to ensure that China's scarce arable land can be used effectively.FindingsChoices in regional agricultural production relate to operational farmers' enthusiasm for profitability and production, residential farmers' ability to ensure their own food security, agriculture's sustainable development and arable land resources' optimal allocation. Therefore, the varietal structure of agricultural products and regional production layout should be compatibly decided according to consumer demand and resource endowment.Originality/valueDuring the process of industrialization and urbanization, wasting of arable land has become a social development problem. On the basis of agriculture's regional resource endowment, this article reconstructs the functional positioning of various Chinese agricultural regions and solves the difficult problem of consumption structure transformation and homogeneous competition through the geographical division of labor, thereby optimizing allocation of arable land resources.

scholarly journals Chromosomal Q-Heterochromatin and Atherosclerosis

2017 ◽  
Vol 7 (1) ◽  
pp. 143
Author(s):  
A. I. Ibraimov
Keyword(s):  
Homo Sapiens ◽  
Single Species ◽  
Causative Factor ◽  
Mean Value ◽  
Biological Species ◽  
Climatic Conditions ◽  
Cold Climate ◽  
High Mountain ◽  
Mountain Areas ◽  
Blood Temperature

We suppose that at study of the pathogenesis of atherosclerosis, it is possible that some evolutionary aspects of the problem are missed. This aspect is related to the peculiarity of human adaptation to climatic geographic conditions of Eurasia, which differ significantly from the climate of East Africa, where Homo sapiens was formed as a tropical biological species and so it has remained to this day. A hypothesis has been put forward that the pathogenesis of atherosclerosis is associated with some previously unknown features of the genome and the physical properties of the human body that arose in the process of its adaptation to a mild and cold climate. These adaptive genetic changes that have contributed to the development (settling) by Homo sapiens of non-tropical, including cold and high mountain areas of the Earth, resulted to the fact that a man became the single species vulnerable (predisposed) to atherosclerosis.Atherosclerosis is apparently a purely human disease that appeared after adaptation of man to climatic conditions of temperate and northern latitudes of the northern hemisphere. The type of vessels (arteries or veins) and the site of their lumen have no role in the development of atherosclerotic changes. The primary and main causative factor in the development of atherosclerosis is blood temperature. The degree of blood cooling in the lungs depends on geographical latitudes and altitude above sea-level of the site of permanent residence of man. The preclinical stage of atherosclerosis may develop into a pathological form predominantly in individuals in the genome of which the amount of chromosomal Q-heterochromatin material is higher than its mean value per individual in the population.

scholarly journals Protected Cropping in Warm Climates: A Review of Humidity Control and Cooling Methods

Energies ◽  
2019 ◽  
Vol 12 (14) ◽  
pp. 2737 ◽  
Author(s):  
Barkat Rabbi ◽  
Zhong-Hua Chen ◽  
Subbu Sethuvenkatraman
Keyword(s):  
Urban Areas ◽  
Arable Land ◽  
Climatic Conditions ◽  
Future Research ◽  
Conventional Farming ◽  
Crop Species ◽  
Humidity Control ◽  
Tropical Regions ◽  
Cooling Methods ◽  
Warm Climates

The projected increase of the world’s population, coupled with the shrinking area of arable land required to meet future food demands, is building pressure on Earth’s finite agricultural resources. As an alternative to conventional farming methods, crops can be grown in protected environments, such as traditional greenhouses or the more modern plant factories. These are usually more productive and use resources more efficiently than conventional farming and are now receiving much attention—especially in urban and peri-urban areas. Traditionally, protected cropping has been predominantly practised in temperate climates, but interest is rapidly rising in hot, arid areas and humid, tropical regions. However, maintaining suitable climatic conditions inside protected cropping structures in warm climates—where warm is defined as equivalent to climatic conditions that require cooling—is challenging and requires different approaches from those used in temperate conditions. In this paper, we review the benefits of protected cropping in warm climates, as well as the technologies available for maintaining a controlled growing environment in these regions. In addition to providing a summary of active cooling methods, this study summarises photovoltaic (PV)-based shading methods used for passive cooling of greenhouses. Additionally, we also summarise the current humidity-control techniques used in the protected cropping industry and identify future research opportunities in this area. The review includes a list of optimum growing conditions for a range of crop species suited to protected cropping in warm climates.

China’s Agricultural Development in Response to Climate Change

2012 ◽  
Vol 524-527 ◽  
pp. 3609-3612
Author(s):  
Wen Bao
Keyword(s):  
Climate Change ◽  
Agricultural Production ◽  
Food Production ◽  
Agricultural Development ◽  
Production Systems ◽  
Climatic Conditions ◽  
Mountain Areas ◽  
Mitigation And Adaptation ◽  
Change Climate ◽  
Mitigation And Adaptation Strategies

Agricultural development, especially agricultural production in mountain areas, is fundamentally linked to climatic conditions, so any changes in climate will necessarily affect agricultural development. China’s agriculture faces several development challenges including those linked to climate change. Climate change is threatening food production systems and therefore the livelihoods of hundreds of millions of people who depend on agriculture in China. Agriculture is the sector most vulnerable to climate change due to its high dependence on climate and weather and because people involved in agriculture tend to be poorer compared with urban residents. Consistent warming trends and more frequent and intense meteorological disasters have been observed across China in recent decades. In line with climate change across the whole country, it will require agricultural development to implement comprehensive mitigation and adaptation strategies.

Commercial Activity of Agricultural Producers

2020 ◽  
Vol 9 (3) ◽  
pp. 913
Author(s):  
I.M. KULIKOV ◽  
I.A. MINAKOV
Keyword(s):  
Climatic Conditions ◽  
Domestic Market ◽  
Agricultural Products ◽  
Commercial Activity ◽  
Food Markets ◽  
Agricultural Producers ◽  
Large Cities ◽  
Production Output ◽  
High Level ◽  
Consumer Marketing

The article considers the existing sales system of agricultural products, which does not allow bringing the manufactured products to the consumer promptly and without losses, as well as reveals the features of agricultural production that affect commercial activity, such as dependence of production output on natural and climatic conditions, guaranteed demand, the uneven supply of products to the market, perishable and poorly transportable products, and the concentration of demand in large cities. It is established that the main suppliers of many types of products to the domestic market are agricultural organizations. This is explained by their large production output and a high level of product marketability. The main channel for selling agricultural products is processing enterprises and wholesale trade. It accounts for 77.0% (by wool) to 98.0% (by sugar beet). The sale prices of products vary by distribution channels; this stipulates the different levels of sales profitability. Export is one of the product sales channels; however, it leads to a reduction in the supply of products in the domestic market. The article substantiates the areas for improvement of commercial activity, which include the use of marketing, increasing the competitiveness of products based on improving their quality, creating consumer marketing cooperatives and agro-industrial establishments that combine production, storage, processing, and sale into a single process, participating in fairs, state and regional tenders, using Internet resources, organizing a system of wholesale food markets and logistics centers.

Lithofacies and fluvial–lacustrine environments of the Palaeogene Sevkhuul and Ergil members (Ergiliin Zoo Formation, South Gobi, Mongolia)

2006 ◽  
Vol 143 (2) ◽  
pp. 165-179 ◽  
Author(s):  
H. G. DILL ◽  
S. KHISHIGSUREN ◽  
J. BULGAMAA ◽  
KH. BOLORMA ◽  
F. MELCHER
Keyword(s):  
Source Area ◽  
Field Work ◽  
Late Eocene ◽  
Climatic Conditions ◽  
Heavy Minerals ◽  
Gobi Desert ◽  
Carbonate Minerals ◽  
Delta Front ◽  
Delta Plain ◽  
Sheet Silicates

The clastic sequence of the Ergiliin Zoo Formation stretches along the Mongolian–Chinese border in the southern Gobi Desert, Mongolia. Its members (Sevkhuul, Ergil) exposed in the Erdene Sum region are well known for their vertebrate remains of Late Eocene and Oligocene age. Based upon field work, the continental red beds were subdivided into four units described as (I) prodelta/mud-sand flat, (II) delta front, (III) delta plain and (IV) calcretes. All sub-environments are in a fluvial–lacustrine setting. Electronmicroprobe analysis, in addition to conventional thin-section examination, was applied to shed some light on the complex mineral association made up of light minerals (quartz, plagioclase, ternary feldspar, orthoclase, smectite, illite, rare palygorskite), heavy minerals (almandine–pyrope solid solution series, zoisite–epidote s.s.s.) and abundant goethite and carbonate minerals (calcite, dolomite). Igneous rocks being exposed in the source area have contributed to the formation of carbonate minerals and Mg-bearing sheet silicates during diagenesis. Higher up on the delta plain transitional between distal alluvial and deltaic deposits, fluids emerged from the distal alluvial–fluvial deposits and formed calcareous duricrusts. Drawing conclusions from the rock colour, the mineral assemblage and the palaeoecological data, the climatic conditions may be described as alternating wet and dry seasons, closely resembling those conditions of a modern savannah.

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