Remote Sensing | Free Full-Text | Multispectral Remote …
Particle size distribution is an important characteristic of reclaimed soil in arid and semi-arid mining areas in western China, which is important in the ecological environment protection and control of the Yellow River Basin. Large-scale coal resource mining disturbances have caused serious damage to the fragile ecological environment. …
Arid and Semi-Arid Agriculture
Prone to drought and with scarce water resources, agriculture in arid and semi-arid regions has unique characteristics and demands. Specific techniques, management practices, and techniques can be used to adapt to the presence or lack of water and moisture for growing crops. Our faculty are experts in: optimized irrigation systems
Spatial Heterogeneous of Ecological Vulnerability in Arid and Semi-Arid
Ecological vulnerability, as an important evaluation method reflecting regional ecological status and the degree of stability, is the key content in global change and sustainable development. Most studies mainly focus on changes of ecological vulnerability concerning the temporal trend, but rarely take arid and semi-arid areas …
Coal mine subsidence has limited impact on plant assemblages in an arid
Coal mine subsidence has limited impact on plant assemblages in an arid and semi-arid region of northwestern China. Yiming He College of Grassland and Environment Science, ... Coal mine subsidence had little effect on plant diversity and community structure. The number of species increased in subsided sites in loam soils, …
Assessment of the environmental changes in arid and …
Coal mining provides energy to support the development of society. However, mining affects the environment. Thus, substantial attention has been placed …
Geochemical exploration for gold in temperate, arid, semi …
Lawrance, L.M. (1988b) Geochemical dispersion anomalies in transported overburden around the quartz vein system at the Mount Pleasant gold mine, Western Australia. In …
Land Subsidence in a Coal Mining Area Reduced Soil Fertility and Led …
Therefore, the reclamation of mining subsidence land might be necessary, especially in arid and semi-arid areas. Next Article in Journal. A Profile of Injuries Sustained by Firefighters: A Critical Review ... subsidence areas and adjacent control areas of the RJ coal mine (RS and RC), MH coal mine (MS and MC) and ZQ coal mine (ZS …
Unlocking the Potential of Arid and Semi Arid …
The Arid and Semi-Arid Lands (ASALs) of Kenya make up to 89% of the country, covering 29 counties and a population of about 16 million people. For decades, these areas were marginalized, seen as unproductive, …
Geographic Extent and Characteristics of the World's Arid …
There is no widely accepted definition of the term arid zones.Two of the most commonly accepted definitions are those of FAO and the United Nations Convention to Combat Desertification (UNCCD 2000).FAO has defined arid zones as those areas with a length of growing period (LGP) of 1–179 days (FAO 2000); this includes regions …
Effects of underground mining on vegetation and …
A rapid increase in underground mining in a semi-arid area of China has led to serious concerns about the health of vegetation overlying these coal seams. However, there have been no empirical …
Role of climate and geography in arsenic mobility and risk at …
Environmental and human health risks of arsenic in gold mining areas in the eastern Amazon. Environ. Pollut., 265 (2020), p. 114969, …
Mine Geological Environment Monitoring and Risk Assessment in Arid …
In terms of the scale of surface subsidence in the study area, a total of 230.03 km 2 of land in the study area showed surface subsidence hazards during the monitoring period, accounting for 13.78% of the total area of the study area, of which the area of severe subsidence was 44.98 km 2 (2.69%).
Desertifying deserts
Second, hyper-arid areas are home to more than 100 million people (1.7% of the world's population), most of whom live in 70,000 km 2 of urban areas 4. Many of these areas are in countries with ...
DRY CLIMATES: SEMI ARID AND ARID – Climatology
These climates (arid and semi arid) cover nearly 26 percent of the earth's land area of which 12 percent is under arid climates. Grass lands of semi arid climates are cultivated in a very organized manner and the resources of arid climates are also extracted vigorously. Problems of ecological imbalances are noticed in these climates.
Hydrological Modelling in Arid and Semi-Arid Areas
Arid and semi-arid regions are defined as areas where water is at its most scarce. The hydrological regime in these areas is extreme and highly variable, and they face great pressures to deliver and manage freshwater resources. However, there is no guidance on the decision support tools that are needed to underpin flood and water …
Vulnerability assessment of the eco-geo-environment of …
Semantic Scholar extracted view of "Vulnerability assessment of the eco-geo-environment of mining cities in arid and semi-arid areas: A case study from Zhungeer, China" by Peixian Li et al. Skip to search ... BP neural network evaluation model is used to analyzes and studies the evaluation and continuous improvement of coal mine intrinsic ...
Groundwater Overexploitation and Seawater …
The exploitation of groundwater resources is of high importance and has become very crucial in the last decades, especially in coastal areas of arid and semi-arid regions. The coastal aquifers in these regions are …
Wind Erosion and Regeneration of Vegetation Cover in Arid and Semi-arid
The total area of arid areas is 6.08 billion hectares, of which irrigated lands, rain-fed lands, and rangelands are 3, 9 and 88%, respectively (Lal 2001). According to estimates by Dregne and Chou (1992), 25%, 50% and 75% of arid areas are used as irrigated, rain-fed and rangelands, respectively.
Vegetation greening intensified soil drying in some semi-arid and arid
Furthermore, the surface SM in 65.87% (33.57%, Sig.) of the GVG area decreased mainly from Humid and Dry sub-humid areas, including the southeast of the United States, Brazilian Plateau, inland areas of Europe, Africa north of the equator, and the south of China, Semi-arid areas such as the middle of North America and northern …
Heavy metal(loid)s shape the soil bacterial community and …
Gold mining can create serious environmental problems, such as soil pollution by heavy metal (loid)s. In this study, we assessed the ecological risk of Hatu gold mining activities and synchronously investigated the bacterial community structure, distribution of soil nutrient-element cycling genes (CNPS) and heavy metal resistance genes (MRG) in …
Developing completion criteria for rehabilitation areas on arid …
Field trials were established at four mine sites located within three subtly different bioclimatic zones that extend through the arid / semi-arid shrubland belt of Western Australia; Northeastern Goldfields (Granny Smith Gold Mine, Sunrise Dam Gold Mine), Eastern Goldfields (Black Swan Nickel Mine), and Northeastern Wheatbelt (Westonia …
Land and Natural Resources Degradation in the Arid …
Over 80% of Kenya's total land area is classified as arid and semi-arid land (ASAL) and is con-sidered being at risk of desertification. The ASAL region is home to about 30% of Kenya's human and 50% of its livestock population. 90% of the total meat consumed in the country comes from the ASAL (GoK 2010).
Technological difficulties and future directions of ecological
The most serious and direct impact of open-pit coal mining on the ecological environment is the destruction of water resources and land resources,as well as the destruction of species in the ecological system.The key to ecological reconstruction of arid and semi-arid dumps is to develop the detection technology of rock structure and water content,in which …
Economic Growth in the Arid and Semi-Arid Lands of Kenya
The purpose of this rapid literature review is to help identify sustainable pathways out of poverty for those living in Kenya's arid and semi-arid lands (ASALs). The sources reviewed recommend a balanced portfolio of investment, the overall purpose of which should be to progressively expand the options open to dryland populations and …
(PDF) Small scale gold mining effects on the …
Small scale gold mining effects on the miners and local communities in semi-arid region of Ethiopia. December 2015; Authors: …
Rainwater-Smart Agriculture in Arid and Semi-Arid Areas
The contributors showcase vital lessons learned from research, field projects and best-practice examples. They address the integrated use of rainwater harvesting management with landscape restoration practices and water-, and climate-smart agriculture for food security and poverty alleviation in arid and semi-arid areas.
A systematic review and comprehensive analysis on …
During the mining process, a large area of land will be encroached upon, resulting in the loss of soil resources and destroy the crust layer. The destruction of soil caused by mining activities in arid areas is mainly reflected in four aspects: (1) The water washing measures in the gold mine area stripped and destroyed the soil and vegetation.
Assessing Ecological Restoration in Arid Mining Regions: A
The mining activities in arid regions have resulted in significant ecological environmental issues, exacerbating the already challenging ecological conditions and …
Developing completion criteria for rehabilitation areas on arid …
Field trials were established at four mine sites located within three subtly different bioclimatic zones that extend through the arid / semi-arid shrubland belt of Western Australia; Northeastern ...
CAIE Geography Pre-U 1A: Hot Arid and Semi-Arid …
some of the only areas in deserts where water is able to penetrate back into the aquifers. Human activity and its impacts on hot arid and semi-arid environments Human interaction with hot arid and semi-arid environments Societies living in these environments have to deal with infrequent and unpredictable rainfall, poor