New crops for semi-arid areas unveiled. Kenya Agricultural and Livestock Research Organisation (Kalro) has launched new drought-resistant, high-yielding and nutrition-rich crop varieties and technologies meant to improve incomes in arid and semi-arid areas. Kalro recently launched the crops that include green grams (ndengu) and beans.
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The livestock sector employs 50% of the agricultural workforce and is the main source of livelihood for the more than 10 million Kenyans who live in arid and semi-arid lands. Research by the PRISE consortium in Laikipia, Kajiado, Makueni and Narok Counties has shown how population pressures are driving the expansion of arable land into forests ...
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The study describes the anthropogenic and geogenic sources of artisanal gold mining-derived potentially toxic heavy metals/metalloids and their ecological …
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Semi-arid lands. Semi-arid lands, which stretch across 15.2 percent of the Earth's land surface, have an aridity index of 0.2–0.5. Annual rainfall in these areas tends to be around 500-800 millimeters, and the presence of dry gale-force winds and very high air temperatures keeps evaporation rates high.
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The Shendong Mining Area (SMA) at the junction region of Shaanxi Province and Inner Mongolia Autonomous region in northern China is a typical semi-arid region. Remote sensing (RS) and Geographic Information System (GIS) were used to construct an ecosystem service measurement and evaluation index system in a typical high-intensity …
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Salinity stress is one of the most vital abiotic stresses which results in significant damages of agricultural production, particularly in arid and semi-arid areas of the world. Salinity causes by high accumulation of …
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The hydrological cycle and water balance in hot arid and semi-arid environments. Even when rain does fall in arid areas, the effectiveness of this precipitation is very low due to: Rapid rates of evaporation and transpiration. Bare surfaces which limit infiltration. Low interception rates This can cause flash floods whilst also not providing ...
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Given the importance of maintaining ecological stability in semi-arid coal mining areas, this study used a coupling coordination degree approach based on the …
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MINE CLOSURE CONSIDERATIONS IN ARID AND SEMI-ARID AREAS Country Gold Silver Copper Lead Zinc USA 14 12 18 4 8 Australia 11 8 -4 17 14 Chile 5 19 - - Mexico 15 4 5 4 CIS 8 10 6 10 8 Approx. Total 33 50 51 36 34 World Production 2,200 16,000 9,166,000 3,290,000 7,164,000
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The water-retaining and yield-increasing capacity of super-absorbent polymer (SAP) are essential for soil remediation in arid and semi-arid areas. Therefore, it is of great significance to investigate the influencing factors and mechanisms of SAP effects on soil environments and crop growth for the precise management of agricultural water …
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The drylands of Kenya that comprise of Arid and Semi-Arid Lands (ASALs) make up about 80% of the total land area and are largely inhabited by agro and nomadic pastoralists.
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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 particularly at risk due to intrusion of salty marine water. One example is the case of Tripoli city at the Mediterranean coast of …
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SEMI-ARID definition: 1. a semi-arid area or climate (= general type of weather) has little rain but is not completely…. Learn more.
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Climatically, it is an arid and semi-arid region, with mean annual rainfall ranging from 30 to 350 mm, and mean temperature from 13° to 15.5°C (Morello, 1958).
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The results have proved to be very successful and have changed the basic agriculture of the area (Zhu and Li, 1998). Water harvesting and its utilization have become a strategic measure for social and economic development in this semi-arid region, providing an effective means of alleviating poverty and allowing a breakthrough in dryland farming. 7.
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Arid and semi-arid soils are frequently characterized by high calcium content owing to the abundant presence of gypsum and lime, thus classifying them as calcareous soils (Verheye, 2009). However ...
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Arid and semi-arid areas are extremely vulnerable to vegetation degradation and climate change as resources are limited and adaptive capacity is low in such regions . Geographic information systems …
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About this book. This book presents the most recent innovations, trends, concerns and practical challenges, and solutions in the field of water resources for arid areas. It gathers outstanding contributions presented at the International Water Conference on Water Resources in Arid Areas (IWC 2016), which was held in Muscat, Oman in March 2016.
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million people live in Africa's arid and semi-arid areas ('drylands'), which comprise 43% o f. the continent's surface area (Anderson et al. 2004). Of these 268 million people resident. in ...
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Geochemical exploration for gold in temperate, arid, semi-arid, and rain-forest terrains ... R.J. (1985) Geochemical exploration for gold in the Red Sea Hills, Sudan. I.M.M. Spec. …
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DOI: 10.1080/11956860.2017.1369620 Corpus ID: 91057056; Coal Mine Subsidence has Limited Impact on Plant Assemblages in an Arid and Semi-Arid Region of Northwestern China @article{He2017CoalMS, title={Coal Mine Subsidence has Limited Impact on Plant Assemblages in an Arid and Semi-Arid Region of Northwestern China}, author={Yiming …
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Este documento ha sido elaborado dentro del proyecto CAMINAR (Catchment Management and Mining Impacts in Arid and Semi-Arid South America; Gestión de Cuencas con Actividad Minera en Regiones ...
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Sand transportation by erosive winds is one of the most common processes in arid and semi-arid areas. Currently, sand transportation is a worldwide problem. Global estimates indicate that 5.49 million square kilometers of the world, located mainly in arid regions, are covered by sand dunes (Shrestha 2008).
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One of the most challenging landscapes in Kenya or anywhere in the world is the Arid and Semi-Arid Lands (ASALs) areas. These areas, including regions like Turkana, Wajir, and Garissa, Kajiado, Kitui, Laikipia among others are characterised by low and erratic rainfall, often receiving less than 500 mm annually.
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Research conducted across arid and semi-arid regions is reviewed here in order to understand the role of IFS in enhancing production, income and livelihood; minimizing risk associated with farming ...
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gold mines, many now in the stage of closure. It. ... is designed to improve water management and mining activities in arid and semi-arid areas of South America, …
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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.
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Arid and semi-arid areas cover approximately 46% of the terrestrial area in the world. Water is the most important factor limiting plant growth in arid and semi-arid areas. For this reason ...
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The SDGs 6 deals with water security, which refers mainly to ensure availability and sus-tainable management of water. The present study aims to enhance reservoir performance under climate change ...
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This study will provide an insight into the adaption of microbial community and functional genes in the harsh environment in mining areas from the semi-arid region …
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