CRITERIA AND INDICATORS OF VULNERABILITY OF AGRARIAN LAND USE SOILS TO DROUGHT TO DEVELOP MEASURES TO MITIGATE THEIR CONSEQUENCES (ON THE EXAMPLE OF THE BELARUSIAN POLESSYE REGION)

2020 ◽  
Author(s):  
Valentin Yatsukhno ◽  
◽  
Svetlana Bachila ◽  
Keyword(s):  
Land Use ◽  
Growing Season ◽  
Climatic Changes ◽  
Anthropogenic Factors ◽  
Agricultural Lands ◽  
Factors Affecting ◽  
Criteria And Indicators ◽  
Moisture Supply ◽  
Natural And Anthropogenic Factors

A system of criteria and indicators is proposed to determine the degree of vulnerability of soils of agricultural lands in Belarusian Polessye based on the analysis of climatic changes, natural and anthropogenic factors affecting their moisture supply during the growing season.

Natural and anthropogenic factors affecting geochemistry of the Jialing and Yangtze Rivers in urban Chongqing, SW China

2018 ◽  
Vol 98 ◽  
pp. 448-458 ◽  
Author(s):  
Tong Qin ◽  
Pingheng Yang ◽  
Chris Groves ◽  
Feng Chen ◽  
Guowen Xie ◽  
...  
Keyword(s):  
Anthropogenic Factors ◽  
Sw China ◽  
Factors Affecting ◽  
Natural And Anthropogenic Factors

scholarly journals Natural and anthropogenic factors affecting the feeding ecology of a top marine predator, the Magellanic penguin

Ecosphere ◽  
2014 ◽  
Vol 5 (4) ◽  
pp. art38 ◽  
Author(s):  
Francisco Ramírez ◽  
Isabel Afán ◽  
Keith A. Hobson ◽  
Marcelo Bertellotti ◽  
Guillermo Blanco ◽  
...  
Keyword(s):  
Feeding Ecology ◽  
Anthropogenic Factors ◽  
Magellanic Penguin ◽  
Factors Affecting ◽  
Marine Predator ◽  
Natural And Anthropogenic Factors

scholarly journals Land Use/Cover Change at Infraz Watershed, Northwestren Ethiopia

2015 ◽  
Vol 8 (1) ◽  
pp. 69-83 ◽  
Author(s):  
Amare Sewnet
Keyword(s):  
Land Use ◽  
Land Cover ◽  
Land Use Policy ◽  
Population Increase ◽  
Anthropogenic Factors ◽  
Agricultural Activity ◽  
Economic Data ◽  
Landsat Images ◽  
Landuse Change ◽  
Natural And Anthropogenic Factors

Abstract Land cover is the physical and biological cover of the surface whereas land use covers the results of human activities for the exploitation of it. The land cover and landuse change is caused by both, natural and anthropogenic factors. The objective of this study was to detect land cover/use changes in Infraz Watershed. The study has used ArcGIS10 and ERDAS IMAGINE10, landsat images of 1973, 1986, 1995 and 2011 and socio-economic data to analyze land cover and landuse changes of Infraz watershed. The study has found that due to the population increase and improper agricultural activity bush and wetlands have declined where as farm and settlement lands expanded between the study years. About 1044 wetlands and 6338.7 ha of bush lands were lost and converted to cultivated and farm lands, grass lands and forest covers which were increased by 6685.3, 357.7 and 338.3 ha between the study periods respectively. There is an urgent need to limit the population growth rate and implementing land use policy in the Infraz watershed.

scholarly journals Quantifying Influences of Natural and Anthropogenic Factors on Vegetation Changes Based on Geodetector: A Case Study in the Poyang Lake Basin, China

2021 ◽  
Vol 13 (24) ◽  
pp. 5081
Author(s):  
Yiming Wang ◽  
Zengxin Zhang ◽  
Xi Chen
Keyword(s):  
Land Use ◽  
Human Activities ◽  
Vegetation Change ◽  
Poyang Lake ◽  
Anthropogenic Factors ◽  
Lake Basin ◽  
Vegetation Changes ◽  
Vegetation Growth ◽  
Poyang Lake Basin ◽  
Natural And Anthropogenic Factors

Understanding the driving mechanism of vegetation changes is essential for vegetation restoration and management. Vegetation coverage in the Poyang Lake basin (PYLB) has changed dramatically under the context of climate change and human activities in recent decades. It remains challenging to quantify the relative contribution of natural and anthropogenic factors to vegetation change due to their complicated interaction effects. In this study, we selected the Normalized Difference Vegetation Index (NDVI) as an indicator of vegetation growth and used trend analysis and the Mann-Kendall test to analyze its spatiotemporal change in the PYLB from 2000 to 2020. Then we applied the Geodetector model, a novel spatial analysis method, to quantify the effects of natural and anthropogenic factors on vegetation change. The results showed that most regions of the basin were experiencing vegetation restoration and the overall average NDVI value in the basin increased from 0.756 to 0.809 with an upward yearly trend of +0.0026. Land-use type exerted the greatest influence on vegetation change, followed by slope, elevation, and soil types. Except for conversions to construction land, most types of land use conversion induced an increase in NDVI in the basin. The influence of one factor on vegetation NDVI was always enhanced when interacting with another. The interaction effect of land use types and population density was the largest, which could explain 45.6% of the vegetation change, indicating that human activities dominated vegetation change in the PYLB. Moreover, we determined the ranges or types of factors most suitable for vegetation growth, which can be helpful for decision-makers to optimize the implementation of ecological projects in the PYLB in the future. The results of this study could improve the understanding of the driving mechanisms of vegetation change and provide a valuable reference for ecological restoration in subtropical humid regions.

Natural and anthropogenic factors affecting Allegheny woodrat occupancy

2018 ◽  
Vol 42 (4) ◽  
pp. 667-673 ◽  
Author(s):  
Jason V. Lombardi ◽  
Steven B. Castleberry ◽  
Michael T. Mengak ◽  
V. K. Terrell
Keyword(s):  
Anthropogenic Factors ◽  
Factors Affecting ◽  
Allegheny Woodrat ◽  
Natural And Anthropogenic Factors

scholarly journals Geomorphic Hazard Map for Spatial Planning Purposes

2004 ◽  
Vol 10 (2) ◽  
Author(s):  
T Taryono
Keyword(s):  
Land Use ◽  
Local Environment ◽  
Well Being ◽  
Anthropogenic Factors ◽  
Hazard Map ◽  
Thematic Map ◽  
Living Space ◽  
Natural And Anthropogenic Factors ◽  
Geomorphologic Hazard

In the planning of spatial lay-out oriented to environmental concept, it requires the information input conneting with the condition of local environment. This condition constitutes the features characteristic of the living space which consist of natural and social environment. One of the natural environment elements, neede to the spatial lay-out planning, is the dynamis geomorphology. The process of the dynami is some times accelerated and increased by natural and anthropogenic factors. The abnormality in both acceleration and the increase will cause a natural disaster, which is based on the landscape approach it is called the geomorphologic hazard. In connection with such event thematic map of geomorphologic hazard describes the disaster susceptibility of an area. The geomorphologic hazard map is an output map whose information is obtainable from thematic map conneting with population, land use, topography, geomorphology, rainfall, hydrological data, and slope classification. Both land use and population maps desccribes the anthropogenic factors. The role of the geomorphologic hazard map, in the planning of spatial lay-out and environmental management, i.e. preventive, represive, rehabilitative, and serves as the basis for interpretation and management of living spere. By putting geomorphologic hazard into map compilation of spatial lay-out (cultural and non cultural area map) a footstep advance is the reached to guarantee human security and their treasures, and human well-being as an integral part of human living prosperity.

scholarly journals ASSESSMENT AND MAPPING OF IRAN DESERTIFICATION INTENSITY USING ARCGIS ENVIRONMENT

2019 ◽  
Vol XLII-4/W18 ◽  
pp. 639-644
Author(s):  
H. Khosravi ◽  
G. R. Zehtabian ◽  
H. Eskandari Damaneh ◽  
A. Abolhasani
Keyword(s):  
Water Shortage ◽  
Anthropogenic Factors ◽  
Class Iii ◽  
Factors Affecting ◽  
Criteria And Indicators ◽  
Global Challenge ◽  
Natural Factors ◽  
Humid Region ◽  
Combating Desertification ◽  
Desert Areas

Abstract. Desertification phenomenon is described as one of the most obvious forms of natural resources degradation in the world. This phenomenon, which occurs because of natural factors or anthropogenic factors, is accounted as the third most important global challenge after crisis of water shortage and drought in the 21st century. Awareness of desertification criteria and indicators, investigation of a regional model and determining the most important factors affecting desertification are essential for combating desertification. So in this study, IMDPA model (Iranian Model of Desertification Potential Assessment) was used in order to prepare Atlas of Iran desertification. 8 criteria and 130 indicators affecting desertification have determined for this model. Regarding to these criteria and indicators and quantifying them in arid, semi-arid and dry sub-humid region of Iran, the map of desertification intensity was prepared. The results of this study showed that 88.73% of the country surface was affected by desertification that is equal to 143365238.6 hectare. The surface more than 49425703.3 hectare equal to 30.59% of total surface of country was in low desertification class, the surface more than 935677913.6 hectare equal to 57.91% was in class II or medium and the surface about 371621.7 hectare equal to 0.23% was in class III or intense. Class IV of desertification or very intense was omitted regarding to IMDPA model and 8 criteria, and natural desert areas which their surface was equal to 15624274.3 hectare or 9.67% is beyond this class.

scholarly journals The conditionality of the formation of territorial species complexes of weeds by natural and anthropogenic factors

2021 ◽  
Vol 20 (1) ◽  
pp. 279-284
Author(s):  
N. N. Luneva
Keyword(s):  
Species Complex ◽  
Anthropogenic Factors ◽  
Factors Affecting ◽  
Species Complexes ◽  
Northern Border ◽  
Southern Border ◽  
Heat And Moisture ◽  
Disturbed Habitats ◽  
Natural And Anthropogenic Factors ◽  
Sum Of Active Temperatures

Territorial species complexes of weeds consist of a pool of species of regional flora (formed under the influence of natural factors), confined to secondary habitats with disturbed (natural or anthropogenic) vegetation and soilcover. Each territory is characterized by a certain species complex, the formation of which is due to the correspondence ofthe indicators of heat and moisture supply of this territory to the requirements of each type of weed plant of this complexto the main factors affecting the spread of plants – heat and moisture. This is the basis for the method of ecological andgeographical analysis, which consists in comparing the factors limiting the distribution of each species in the northern (indicators of the isoline of the sum of active temperatures above +5 ° C, describing the northern border of the weed species’range) and southern (indicators of the SCC isoline, describing the southern border of the species’ range) directions withthe indicators of heat and moisture availability of the studied territory. The species complex identified in this way is implemented within the region on a variety of secondary (disturbed) habitats, of which only those formed by anthropogenic means are taken into account in phytosanitary zoning. The equivalence and irreplaceability of the action of natural andanthropogenic factors is the basis for the formation of weed flora, as well as phytosanitary zoning in relation to weeds andlong-term forecast of their distribution.

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