Gully in arid climate.
It is well established that climate exerts a strong external control on landscapes; more importantly, changes in climate promote disturbances and threshold crossing, which ultimately produce some geomorphic response (e.g., Bull, 1991).Sediment yields tend to be larger in semi-arid climates than in arid and humid environments due to the regulating effect of vegetation on hillslope stability and ...
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).In the present study, gully erosion in the Markazi province (Iran), which has an arid and semi-arid climate, was investigated and predicted. Gullies often occur in this area and cause very extensive damage to the surrounding environment, as well as agriculture productivity [30,31]. Gullies are thus considered a major environmental problem that ...Crop production potential (CPP) is profoundly affected by the change in climate factors (e.g., precipitation, temperature, and solar radiation) brought about by climate change, which ultimately affects the quantity and yield of crops. In China, arid and semi-arid regions are mainly located in the western regions and occupy around 59% of the land area. In order to identify the most important ...During the monitoring time interval (1990–2001), the linear gully retreat in the study area ranged between 12.3 and 250 m an average rate of 1.12–22.7 m year−1 for each gully head.
which increase gully erosion in the semi-arid area, accessed success of different gully stabilization methods used for controlling gully erosion in semi-arid environment and suggested best methods of conservation and rehabilitation to gully erosion based on local factors. 2.MATERIALS AND METHODS 2.1 Study areaEvaluation of gully head retreat and fill rates based on high-resolution satellite images in the loess region of China. The acceleration of large gully erosion in the loess environments of China is a matter of concern because of the changing land use and urban expansion. This paper evaluates the gully head retreat and….
The effect of climate is notable and can be considered as an important factor in the occurrence of gullies. The study area belongs to a region characterized by a semi-arid climate, where the average precipitation per year is comprised between 340 and 400 mm. In the last decade, there is a remarkable climatic change in this area.The climate at this study site is typically arid and semiarid, which is influenced by the combination of the North China monsoon and northwest arid climatic conditions. Precipitation mainly occurs between June and September, amounting to ~535 mm per year, and displays significant inter-annual variability (Wang et al. 2013 ).
The semi-arid loess hilly–gully region in China has an extremely vulnerable ecological environment. Inappropriate land use — crop farming, overgrazing, and plantation forestry - has worsened ...Soil moisture plays a critical role in land-atmosphere interactions. Quantifying the controls on soil moisture is highly valuable for effective management of water resources and climatic adaptation. In this study, we quantified the effects of precipitation, temperature, and vegetation on monthly soil moisture variability in an arid area, China. A non-linear Granger causality framework was ...Gully definition: a small valley or ravine originally worn away by running water and serving as a drainageway after prolonged heavy rains.. See examples of GULLY used in a sentence.Introduction. Arid lands occupy 14 per cent of India's total land area, and. include both hot and cold arid regions. While the major part of the. hot arid region occurs in the state of Rajasthan ...Arid region water reservoirs have different characteristics and solutions from humid regions with the most water shortage in the world socio-economically. This paper outlines possible implementation methodologies, procedures and guidance for water storage in natural and artificial reservoirs for better operation and management rules …
As one critical source of water for maintaining ecosystems in arid and semi-arid regions, rainfall replenishment to soil water can determine vegetation growth and ecosystem functions. However, the limited rainfall resources were often not used effectively in the semi-arid loess hilly areas due to random temporal and spatial distribution of …
Gully definition: a small valley or ravine originally worn away by running water and serving as a drainageway after prolonged heavy rains.. See examples of GULLY used in a sentence.
This aim of this work is to expand the body of the proposed gully erosion modelling and verify a new ensemble artificial intelligence approach based on rotation forest (RF) and the ADTree algorithm, named as RFADT, for gully erosion mapping in a semi-arid watershed, Klocheh, Bijar in Kurdistan province, Iran.The semi-arid loess hilly-gully region in China has an extremely vulnerable ecological environment. Inappropriate land use — crop farming, overgrazing, and plantation forestry - has worsened ...Gully erosion is a significant environmental problem in arid and semi-arid regions [4][5] [6] [7][8], in Mediterranean countries [9][10][11][12][13][14][15][16] and in a wide range of climatic and ...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 area-specific gully erosion rate (gully erosion rate per unit area) from 1957 to 2005 of the gully networks in 12 study catchments was 16·2Mgha-1y-1, a finding in accord with results from ...Gully erosion is an environmental problem in arid and semi-arid areas. Gullies threaten the soil and water resources and cause off- and on-site problems. In this research, a new hybrid model combines the index-of-entropy (IoE) model with the weight-of-evidence (WoE) model. Remote sensing and GIS techniques are used to map gully-erosion susceptibility in the watershed of the Bastam district of ...The climate of this area is classified as semi-arid bordering to arid 58. Mean annual rainfall reaches 251 mm and the mean monthly temperature 14.1 °C. Mean annual rainfall reaches 251 mm and the ...
The watershed has a continental monsoon season climate, with an annual mean temperature of 8.8 °C, and an annual mean evaporation of 1463 mm. ... (2012) Effect of agricultural activities on soil moisture content at slopeland in hilly and gully region of Loess Plateau. J Arid Land Resour Environ 26(05):126–134. Google ScholarAbstract. In the Tigray highlands, gully development is linked to poverty-driven unsustainable use of the land in a vulnerable semi-arid and mountainous environment, where intense rainfalls challenge the physical integrity of the landscape. Over the last two centuries, three major phases in the hydrological regime of the region could be ...23.3.3 Climate of Regions with Gully Erosion. Results of this survey indicated that 35% of the Iranian gullies are located in a semi-arid climate. Then, they are distributed in arid and Mediterranean climates with 22% and 16%, respectively (Fig. 23.7). These results with our field observations indicate two facts.The climate in Juneau and the southeast panhandle is a mid-latitude oceanic climate (Köppen Cfb). The climate in the extreme north of Alaska is what would be expected for an area north of the Arctic Circle — it is an Arctic climate (Köppen ET) with long, very cold winters and short, cool summers. Akclimate.org says the following: "The altitude above sea level influences the climate of a ... Find 41 different ways to say ARID, along with antonyms, related words, and example sentences at Thesaurus.com. A Novel Ensemble Artificial Intelligence Approach for Gully Erosion Mapping in a Semi-Arid Watershed (Iran) ... Iran. A total of 915 gully erosion locations along with 22 gully conditioning factors were used to construct a database. Some soft computing benchmark models (SCBM) including the ADTree, the Support Vector Machine by two kernel ...
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 ...
As for climate regimes, they have the strongest correlations in arid or cold regions, and weaker correlations in humid, temperate locations. While remotely sensed soil moisture data are less reliable in dense vegetation, these results confirm that drier, less vegetated climates show a highly linear relationship between soil moisture and rainfall.In arid and semi-arid climates, such as the Semnan province, Iran, gullies cause very extensive damage and are considered a major environmental problem [26,46]. Therefore, the identification of the causes of gully erosion development and its zoning for comprehensive management planning by executive agencies remain essential.Studying the spatiotemporal variations in ecosystem services and their interrelationships on the Loess Plateau against the background of the gully control and land consolidation (GCLC) project has significant implications for ecological protection and quality development of the Yellow River Basin. Therefore, in this study, we took Yan’an …This work used three state-of-the-art machine learning techniques to produce a multi-hazard (MHR) map illustrating areas susceptible to flooding, gully erosion, forest fires, and earthquakes in Kohgiluyeh and Boyer-Ahmad Province, Iran. We used three state-of-the-art machine learning techniques (boosted regression tree, random forest, and support vector machine) to produce a multi-hazard (MHR ...DOI: 10.5772/INTECHOPEN.87982 Corpus ID: 199113696; Salinity Stress in Arid and Semi-Arid Climates: Effects and Management in Field Crops @article{Hussain2019SalinitySI, title={Salinity Stress in Arid and Semi-Arid Climates: Effects and Management in Field Crops}, author={Sajid Hussain and Muhammad Shaukat and Muhammad Abdul Basit Ashraf and Chun Quan Zhu and Qian-yu Jin and Junhua Zhang ...In spite of many research efforts on gully erosion, there is an argument about causes of gully erosion among researchers. Causes of gully erosion can be classified into three categories: human impact (Bork et al., 2001, Starr, 1989), climate change (Gregory and Moore, 1931) and intrinsic changes (Schumm and Hadley, 1957). Examples and causes of gully erosion include: land use change and ...This study therefore, investigated changing climates and the effects of gully erosion on Akpo community farmers in Anambra State, Nigeria. ... Arid Tropics, pp: 28. 7. Fournier FT (2000) Land Use ...Assessing and mapping the vulnerability of gully erosion in mountainous and semi-arid areas is a crucial field of research due to the significant environmental degradation observed in such regions.
Vegetation has a big role on the distribution of soil water in gully edges, thus it can be conservation way to manage the soil which has effect for landslide in the semi arid region (Wang et al ...
trend of gully erosion occurred due to inappropriate land management, non-standard cultivation, and severe and fast land use changes [23]. The main prerequisite for dealing with various types of erosion, especially gully erosion, is the prediction of the risk of gully formation in di erent areas that are prone to this type of erosion [24].
23.3.3 Climate of Regions with Gully Erosion. Results of this survey indicated that 35% of the Iranian gullies are located in a semi-arid climate. Then, they are distributed in arid and Mediterranean climates with 22% and 16%, respectively (Fig. 23.7). These results with our field observations indicate two facts.Some factors (i.e. lithology, topography, climate, the change of population as well as land use during the past 50 years) that could have great influence on the development of gully in the arid-hot basin of Jinshajiang valley were investigated. The results show that the factors leading to the strong gully erosion in this area include: the widely distributed Yuanmou group stratum, which ...22 Jun 2023 ... the gully defects on their walls prominent. ... climatic areas is as follows: semi-arid > extreme-arid > ... climate areas in the same dynasty ...In the mediterranean climate as the humid condition, gullies experiencing linear view plan on the plateaus and upper terraces were formed on the croplands with higher rainfall. …Among the land degradation processes, gully erosion is the one that poses more environmental and societal challenges in arid regions. Predicting spatiotemporal gully development in a region under changing conditions is important to adopt proper mitigation measures. Here we investigate the Ghapan-Olya watershed in Golestan province in Iran, which is affected by many erosional landforms ...In spite of many research efforts on gully erosion, there is an argument about causes of gully erosion among researchers. Causes of gully erosion can be classified into three categories: human impact (Bork et al., 2001, Starr, 1989), climate change (Gregory and Moore, 1931) and intrinsic changes (Schumm and Hadley, 1957). Examples and causes of gully erosion include: land use change and ...The greater shifts in physicochemical properties and soil bacterial communities in arid soils under climate change are attributed to the influence of climate legacies, which have emerged as key drivers shaping the response of bacterial communities to climate disturbances (Delgado-Baquerizo et al., 2017a, 2018).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 ...
In semi-arid areas, the combination of a non-uniform distribution of ... characterised by extensive gullying. The climate of this region may be described as seasonally dry. Annual rainfall averages 770 mm and annual ... The gully catchment used in this study is located in Pinus nigra forest, planted in 1948 on previously ...DiVAJun 1, 2022 · The climate is arid with rainfall events mostly between September and March of the following year, nevertheless, convective rain evens became more common in recent years (Goldreich, 2012). The rainfall amounts from 2013 until 2018 are given in Supp. 2. 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 ...Instagram:https://instagram. jeeter juice carts realmcagcc deersmarlboro gun showjennifer lambers fox 10 news Vegetation has a big role on the distribution of soil water in gully edges, thus it can be conservation way to manage the soil which has effect for landslide in the semi arid region (Wang et al ... rockette salary 2023st paul pioneer press obit archives The combination of loess soil, an arid climate and intensive and continuous cultivation may promote incision and gully erosion. Whereas most studies focus on … brunch in smyrna tn Gully erosion is a form of severe land degradation, which is more pronounced in semi-arid and arid environments due to their vulnerable ecosystems. Establishing the causes and effects of gullyGully erosion has been reported in different countries around the globe (see Nyssen et al. 2014;Vanmaercke et al. 2021). In terms of evolution, gully erosion has a greater impact in arid and semi ...