Gully in arid climate

Sep 9, 2011 · Abstract. This study was aimed at assessing the causes of the gully erosion and its effects on the agricultural lands in the arid region of southeastern Iran. In this study, we have used geologic maps in scales of 1:50,000 and 1:250,000, aerial photographs on a scale of 1:20,000, field observation, and GPS (global positioning system).

Gully-head has been observed in a wide range of continuous and categorical conditioning factors in different countries. This study aimed to examine the association of gully-heads with the most effective hydrologic factors via univariate and bivariate analyses in the standard mode. A 2700 ha area in the loess-covered region of Iran was selected and the point map of 287 gully-heads prepared by ...The semiarid and temperate continental monsoon climate dominates the northern Loess Plateau. The mean annual rainfall in this catchment is 437 mm, and >70% rainfall is experienced between June and September. ... Soil moisture variability in a semi-arid gully catchment: implications for runoff and erosion control. Catena, 32 (1998), pp. 55-70 ...2.1 Study area. The Dongzhiyuan plateau spans between 106°14′-108°42′E,34°50′-37°19′N, which corresponds to the southeastern edge of the Gansu Province, China (Fig. 1a), an arid and semi-arid zone. The topography of the study area is dominated by gully incised tablelands, on terrain that displays an elevation ranging …Gully‐head erosion processes on a semi‐arid valley floor in Kenya: a case study into temporal variation and sediment budgeting ...The gully that was analysed in forest had been deepened by piping during several episodes connected with high precipitation events. In contrast, the pipe located in grasslands collapsed 1-2years after ... badlands in a semi-arid climate; e.g. Chilton et al., 2008; Zhu, 2003)Arabian Desert - Arid, Sand, Heat: The Arabian Desert spreads across 22° of latitude, from 12° to 34° north; although much of the desert lies north of the Tropic of Cancer, it usually is considered a tropical desert. Summer heat is intense, reaching temperatures as high as 130 °F (55 °C) in places. In the interior the heat is dry. Coastal regions and some highlands, however, are subject ...

The climate is arid with rainfall events mostly between September and March of the following year, nevertheless, convective rain evens became more common in …production in semi-arid and arid regions is 50-80% worldwide [7]. It has been reported that soil loss rates by gully erosion ranges from minimal 10% up to 94% of total sediment yield in water ...The prior studies were completed in semi-arid and Mediterranean climates, and agreed on the positive correlation between erosion and precipitation intensity. ... This finding agrees with results from other recent studies of gully erosion in semi-arid and Mediterranean climates (Bergonse and Reis, 2011, Martínez-Casasnovas et al., 2009), ...173 papers related to ephemeral gully erosion in Web of Science were reviewed. • Critical morphological features of ephemeral gully channel were different worldwide. • Topographic, climate, land management, soil, and hydraulics factors were assessed. • Fifteen methodological approaches employed to quantify gully erosion were evaluated. •In comparison, semi-arid climate and precipitation regimes promote soil erosion through low vegetation cover and recurring heavy rainfall events. Therefore, the adverse effect of climatic conditions is very much significant for large scale land degradation in the form of gully formation and development.Introduction. Soil erosion and land degradation are common processes in semi-arid environments that lead to reduced agriculture potential, degradation of …Feel free to add this climate graph to your website. Click the copy button above. Weather Forecasts for Pasauran. Tue Jan 16. 30°C | 23°C. SW 14 km/h. 56 mm. broken clouds and rain. hourly forecast. Wed Jan 17. 31°C | 24°C. NW 11 km/h. 1.2 mm. broken clouds and slight rain. hourly forecast. Thu Jan 18. 29°C | 24°C. SW 22 km/h.

Spatial variation in dissolved organic matter in a vegetation-restored ephemeral gully on the semi-arid region. Author links open overlay panel Guo Chen a, Hao Wang a, Ming Li b, Qing-wei Zhang a, Jian Wang a, Ren Geng c, Xiao ... Soil organic carbon in deep profiles under Chinese continental monsoon climate and its relations with land uses ...26 Apr 2018 ... The eastern parts of the Maguuma were characterised by arid tablelands, with lush gullies flowing through them: this sort of landscape can ...Gully erosion is an important cause of soil loss and land degradation in arid and semi-arid regions in Iran and elsewhere world 30, 31. Maps showing where this problem exists or might develop in ...DOI: 10.1016/j.catena.2023.107452 Corpus ID: 260828987; Spatial variation in dissolved organic matter in a vegetation-restored ephemeral gully on the semi-arid region @article{Chen2023SpatialVI, title={Spatial variation in dissolved organic matter in a vegetation-restored ephemeral gully on the semi-arid region}, author={Guo Chen and …The present-day climate of the Negev Highlands is typical to most arid desert regions. Mean annual temperatures fall between 17-19 °C, ... When referring to gully development within the valleys in arid environments, the upper- and lower-valley (Fig. 4) define two distinct segments that significantly differ from each other in terms of relief ...Jan 1, 2011 · 2. Methods Gully erosion as an acute geo-environmental issue in the semi-arid regions is culmination of some factors such as climate, lithology, soil properties, topography, the change of population as well as land use. Gully erosion occurs when run-off concentrates and flows at a speed enough to separate and move soil materials or particles.

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It developed in four climates including mild desertic arid, cold desertic arid, cold semiarid and mild semiarid. Average annual rainfall was between 200 and 471 mm. The length of represented gullies were between 50 and 110 meters. The depth of the gullies was between 0.7 to 9.5 meters. This study aimed at (i) developing, evaluating and comparing the performance of support vector machines (SVM), boosted regression trees (BRT), random forest (RF) and logistic regression (LR) models in mapping gully erosion susceptibility, and (ii) determining the important gully erosion conditioning factors (GECFs) in a Kenyan semi-arid landscape. A total of 431 geo-referenced gully erosion ...Overall, the highest gully densities occur in regions with some topography and a (semi-)arid climate. Nonetheless, it is important to point out that not all gully heads are still actively retreating. Building on earlier insights into the magnitude and controlling factors of gully head retreat rates, we explore what our current results imply for ...On average, a gully density of 1.14 km km −2 was measured in 1935-1936 of which the larger portion (75%) were vegetated, indicating they were not very active. Over 80 years, gully density has significantly increased to 1.59 km km −2 with less vegetation growing in their channel, but 66% of these gullies were treated with check dams.

Arid lands cover about a third of the Earth's land surface and occur in every continent including Antarctica (Goudie, 2002 ). They are areas where there is a severe shortage of moisture, predominantly because precipitation levels are low. In some years they may even receive no rain at all. In some deserts, aridity is in part also the result of ...Role of climatic factors is significant among the factors affecting the erosion of watersheds. The importance of this issue increases with regard to the phenomena of climate change. Therefore in this study using different scenarios of climate change, rainy and gully erosion potential of Kor-chamriz watershed in Fars province was studied applying Arnoldus and Sepaskhah`s methods of humidity ...Introduction. In the cold, nutrient-poor, and hyper-arid McMurdo Dry Valleys (MDV) of Antarctica, water availability serves as a primary factor governing the persistence and distribution of life (Kennedy, 1993).Climate, generally understood as long-term records of air temperature and precipitation, determines water availability on a regional scale, …1. Introduction. Wide parts of the cultivated arid area over the globe are characterized by loamy soils. The combination of climate extremes, soil with high content of fine particles, a hilly topography, intense cultivations, and local farmers that are often unaware of soil conservation practices leads to enhanced soil erosion and incision phenomena (Catt, 2001, Sun et al., 2014).The semi-arid climate is characterized by a major dry season lasting from October until March. The rainy season peaks from July until the beginning of September. The annual precipitation is approximately 700 mm y − 1 and usually takes the form of heavy showers that seldom last longer than ten minutes (Nyssen et al., 2005).This study examined the performance of two ensemble models based on multicriteria decision making (MCDM) analysis, analytic hierarchy process (AHP), weight of evidence (WoE) and random forest (RF) for spatiotemporal monitoring of gully erosion sensitivity (GES) from 1988 to 2019 as well as a projection for 2040 in a semi-arid area.A gully is a landform created by running water, mass movement, or commonly a combination of both eroding sharply into soil or other relatively erodible material, typically on a hillside or in river floodplains or terraces. [1] Gullies resemble large ditches or small valleys, but are metres to tens of metres in depth and width, are characterized ...Since desert biomes receive little precipitation per year, the conditions are very hostile for plants and animals. A desert biome is a collection of habitats that that develop in arid (dry) environments as a result of little rainfall (50cms per year) or no rainfall at all. Desert biomes are classified into four, with each having their own ...

A gully is a landform created by running water, mass movement, or commonly a combination of both eroding sharply into soil or other relatively erodible material, typically on a hillside or in river floodplains or terraces. [1] Gullies resemble large ditches or small valleys, but are metres to tens of metres in depth and width, are characterized ...

Xeriscaping is a great way to landscape in arid and desert climates. It conserves water and reduces the need for irrigation. Native plants, efficient irrigation systems, and organic soil matter are used to optimize moisture retention. Xeriscaping saves water and requires less maintenance, making it more resilient to drought.13 May 2015 ... The largest dryland expansion has occurred in semi-arid regions, where the area has expanded since the early 1960s, accounting for more than ...The natural vegetation is defined as arid, sparsely distributed, except for localized linear features along the wadis (Smith et al., 2012), in soil patches (Mor-Mussery et al., 2014) and in unprocessed plots in the cultivated areas (Poesen, 2011). Most of the Western gully has a 'U' shape (Capra, 2013) with 5-45° slopes from the surrounding ...... Arid Areas to Climate Change",. Jerusalem, Israel, 14-21 May 1995. Quine, T. A., Desmet, P. J., Govers, G., Vandaele, K. & Walling, D. E. (1994) A comparison ...A warming climate cause changes in regional climate and climate extremes. However, understanding how future warming can affect the arid climate and drought in Asia is still unclear. Global warming (GW) impacts on shifts in arid regions and change patterns of drought in the Asia region are investigated using the shared socioeconomic pathway 5-8.5 of the Coupled Model Intercomparison Project ...It is regarded through young and arid and semi-arid climate soils with a shallow A horizon, surface rock fragments of zero to 40% and sandy loam texture. ... Spatial variability of soil moisture content and its relation to environmental indices in a semi-arid gully catchment of the Loess Plateau, China. Journal of Arid Environments, 49 (2001 ...The here presented thermo-erosion gully inventory is valuable when regarded from a climate change perspective, as it can be utilised by scientists from various backgrounds, such as cryosphere research, geomorphology, statistical modelling of climate-induced geomorphological processes, hydrologists, cultural heritage planners, etc.

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Gully erosion is considered to be one of the main causes of land degradation in arid and semi-arid territories around the world. In this research, gully erosion susceptibility …Gully erosion susceptibility mapping is a fundamental tool for land-use planning aimed at mitigating land degradation. However, the capabilities of some state-of-the-art data-mining models for developing accurate maps of gully erosion susceptibility have not yet been fully investigated. This study assessed and compared the …Tea Tree Gully, a picturesque suburb located in South Australia, experiences a unique climate that greatly influences the region’s agriculture and farming practices. The weather pa...The climate of this region may be described as seasonally dry. Annual rainfall averages 770 mm and annual evapotranspiration averages 713 mm ( Elias Castillo and Ruiz Beltran, 1981 ). December is the wettest month receiving an average of 98.2 mm and July the driest month receiving 18.2 mm.These are the hot desert, semiarid, tropical wet-and-dry, equatorial (tropical wet), Mediterranean, humid subtropical marine, warm temperate upland, and mountain regions. Africa: major climate regions. Africa's climate is dominated by desert conditions along vast stretches of its northern and southern fringes.The rate of gully erosion is high in the arid and semi-arid regions experiencing less amount of vegetation cover. Adana Province being one of the major provinces in the Mediterranean Sea Region ...Soil loss due to gully erosion is highly sensitive to climate change, and gully head retreat rates, as projected, may increase with 27 to 300% when the precipitation intensities increase [36,37 ... Gully erosion covered over 600 square kilometers in the Golestan province. Although gully erosion was observed in 12 climates based on the modified Demartons' classification, most of the gullies occurred in arid and semiarid climates with loess soil. From six regions with extensive gully erosion, four have semiarid climate. The total gully and streambank areas, the lengths of stream networks, bank soil bulk densities, and erosion rates were all measured to calculate total soil losses via the stream bank and gully ...Introduction. In the cold, nutrient-poor, and hyper-arid McMurdo Dry Valleys (MDV) of Antarctica, water availability serves as a primary factor governing the persistence and distribution of life (Kennedy, 1993).Climate, generally understood as long-term records of air temperature and precipitation, determines water availability on a regional scale, …The desert biome covers about one-fifth of Earth's surface. This biome has a layer of soil that can either be sandy, gravelly, or stony, depending on the type of desert.Deserts usually get at most 50 centimeters (20 inches) of rainfall a year, and the organisms that live in deserts are adapted to this extremely dry climate.. Plants in deserts have adaptations to conserve water.The science is off the charts. Climate change is here and it's affecting the planet. We'll tell you how and where. Advertisement With the United Nations' climate conference in Scot... ….

The Loess Plateau (LP) of China, boasting a typical semi-arid and arid ecosystem, is located in the upper and middle reaches of the Yellow River (100°54-114°33E and 33°43-41°16N), and ...A Comparative Analysis of Phytovolume Estimation Methods Based on UAV-Photogrammetry and Multispectral Imagery in a Mediterranean ForestThe study area is located in an arid environment with an annual average rainfall of 150 mm with mean annual temperature of 14.5°C, and relative air humidity of 52%.Generally about 80% of precipitation falls in 2-3 intense storm events, predominantly towards the end of autumn and winter, with a high temporal and spatial variability typical of such arid regions.particularly for controlling gully and rills erosion, it is also ... More than forty percent of lands in the world are located in semi-arid and arid climates, where a large population of the world ...Introduction. In the cold, nutrient-poor, and hyper-arid McMurdo Dry Valleys (MDV) of Antarctica, water availability serves as a primary factor governing the persistence and distribution of life (Kennedy, 1993).Climate, generally understood as long-term records of air temperature and precipitation, determines water availability on a regional scale, …Keywords: land use, soil, gully formation, arid ecosystem, Iran, human impact, land degradation 2. ... of the researcher's studies during the last 10 years indicated that gully erosion was formed in 26 locations in seven climates, dominantly in semiarid climate in Fars province (Soufi, 2004a,b). Sixteen locations with different climates out of ...To study the causes of gully erosion initiation, the Abgendi Watershed with the highest amount of gully erosion was selected as a semi-arid area in Iran. In this area, 35 gullies were randomly ...Climate, generally understood as long-term records of air temperature and precipitation, determines water availability on a regional scale, whereas variations in …Gully erosion covers more area in the arid climate than humid one. Human impact, intensive and short period rainfall with soil chemical characteristics helped gully erosion to develop. In the arid climate, the gullies have dendretic general view plan. They are also longer and denser. It implies the surface runoff production by uplands. Gully in arid climate, [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1]