The effects of rainfall regimes and land use changes on runoff and soil loss in a small mountainous watershed

Fang, Nianqiao; Shi, Zhihua; Lü, Li; Guo, Zhonglu; Liu, Qianjin; Ai, Lei

doi:10.1016/j.catena.2012.07.004

Cited by 126 publications

(66 citation statements)

References 52 publications

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“…Fang et al (2012) studied characteristics of 152 rainfall events and their relationship with the runoff and SP in Three Gorges, China, and found events divided into three groups by the K-means clustering method. According to these authors, one of the groups presented smaller rainfall depths, however, the frequency of the precipitation events was not enough to generating runoff and produce sediments.…”

Section: Resultsmentioning

confidence: 99%

“…Local and regional-scale studies have been conducted to evaluate and understand environmental sustainability mechanisms (SUN; NI; BORTHWICK, 2010;FANG et al 2013). However, few studies assessed the effects of changes in land use in the Brazilian semiarid on hydrological and sedimentological processes, which cause irreparable damages, such as siltation and eutrophication of water bodies.…”

Section: Introductionmentioning

confidence: 99%

“…The water flow on long surfaces increases the probability of infiltration and sediment deposition due to absence of transport (FANG et al, 2012). Moreover, the extrapolation of estimates between scales is limited by the heterogeneity of watersheds, usually not represented at small scale (BOIX-FAYOS et al, 2006).…”

Section: Introductionmentioning

confidence: 99%

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Rainfall Characterization and Sedimentological Responses of Watersheds With Different Land Uses to Precipitation in the Semiarid Region of Brazil

et al. 2017

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-The objective of this work was to evaluated the precipitation characteristics (depth, I30 and erosivity) and their effects on sediment production in three watersheds under different managements of land use 35-year regenerating Caatinga (RC), thinned Caatinga (TC), which underwent thinning of trees with diameter smaller than 10 cm; and deforested Caatinga (followed by burning and pasture) (DC). The experimente was conducted in the central, tropical semiarid region of the State of Ceará, Brazil. The precipitation events, surface runoff and sediment production were monitored from 2010 to 2015. The precipitation characteristics were subjected to Pearson's correlation at 1 and 5% of significance and the events that produced sediments in each watershed were hierarchically grouped by hierarchical cluster analysis technique. Two hundred precipitation events were recorded, with 23 (RC), 18 (TC) and 43 (DC) events producing sediments. The use of thinning (TC) decreased the sediment production by 53.5%, while the deforestation, burn and pasture cultivation (DC) increased soil losses by 14%, compared with the RC. The sediment production was greatly correlated with the I30 in the three watersheds, denoting the erosion process great dependence on the precipitation intensity.Keywords: Precipitation. Sediment Production. Watersheds. CARACTERISTICAS DAS CHUVAS E RESPOSTAS SEDIMENTOLOGICAS EM DIFERENTES USOS DO SOLO NO SEMIÁRIDORESUMO -Obejtivou-se com este estudo investigar as caracteristicas das chuvas (altura precipitada, I30 e erosividade) e suas correlações com a produção de sedimentos em três microbacias submetidas aos seguintes manejos: Caatinga em Regeneração (CER) há 35 anos; Caatinga Raleada (CRA) passou pelo raleio das árvores com diâmetro menor que 10 cm; Desmatamento/Queima/Plantio de Pastagem (DQP). A área de estudo é representative de região semiárida tropical e está localizada na parte central do estado do Ceará. Foram monitorados eventos puviométricos, escoamento superficial e produção de sedimentosdos anos de 2010 a 2015.As características das chuvas foram submetidas a correlação de Pearson a nível de 1 e 5 % de significância e os eventos que produziram sedimentos em cada microbacia foram agrupados hierarquicamente pela técnica de Análise de Agrupamento Hierárquico. Ao todo foram registrados 200 eventos pluviométricos dos quais 23, 18 e 43 eventos produziram sedimentos nas microbacias CER, CRA e DQP respectivamente. A adoção do manejos de raleamento reduziu a produção de sedimentos em 53,5 %, enquanto que o DQP promoveu um aumento das perdas de solo em 14 % em relação à CER. A produção de sedimentos expressou uma maior correlação com o I30 para as três microbacias expressando a maior dependência do processo erosive da intensidade das chuvas.Palavras-chave: Precipitação pluviométrica. Produção de sedimentos. Micorbacias.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Rainfall Characterization and Sedimentological Responses of Watersheds With Different Land Uses to Precipitation in the Semiarid Region of Brazil

et al. 2017

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“…Waterflooding and field-puddling will cause soil aggregates to be destroyed into loose granules and be easily eroded (Saroch and Thakur, 1991;Kirchhof et al, 2000;Kukal and Sidhu, 2004;Mohanty, et al, 2004;Slamet et al, 2013). Precipitations as well as its intensity and distribution contribute to the potential dispersion of soil particles, the amount and speed of surface run-off water, the degradationof soil, and landslide (Barus, 1999;Fang et al, 2012). Precipitation will instigate erosion when the intensity is high, and the duration is long (Utomo, 1989;Xu et al, 2015).…”

Section: Potential Disaster Due To Paddy Field Conversionmentioning

confidence: 99%

Buffering capacity of paddy field as the reservoir of rainwater and surface runoff in the Lowokwaru subdistrict, Malang, East Java

Suprihati¹,

Hanani

Irianto

et al. 2018

J.Degrade.Min.Land Manage.

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Abstract:Paddy fields produce ecological services that improve environmental quality in urban areas, one of them was flood control through retaining rainwater and surface runoff within the embankment of paddy field. The ability to retain water is known as the buffering capacity (BC), which is the function of soil moisture, embankment height, water inundation and rice-plant interception during the growing periode. The intermitten system of water inundation applied by farmers resulted in changes of the BC on daily basis. The calculation of BC was divided into five categories for accuracy, which were : (1) BC during the Harvest; (2) BC with inundation at vegetative and generative phase (VGG); (3) BC with inundation during Land Preparation and Planting phase (OTTG); (4) BC without inundation during the vegetative and generative phase (VGTG); and (5) BC without inundation during the land preparation and planting phase (OTTTG). The purpose of this research was to measure potential buffering capacity of paddy field in Lowokwaru Subdistrict and to estimate amount of rainwater and surface runoff which could be accommodated within the buffering capacity. The average of daily BC in seven different villages were 1,650.81-3,961.81 m 3 /ha and the total BC for 241 paddy field was about 823,156.36 m 3 . It was only a small percentage of average daily BC filled by rainwater (14.07-33.31%) and left the rest to be filled by surface runoff water. The paddy field of 241 ha in Lowokwaru Subdistrictis was capable to receive surface runoff from surrounding areas up to 1,698.66 ha.

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“…siftdesk. org | volume 1: issue 2 the weathering of the bare feldspathic sandstone, leading to lose surface soil and the loss of fine particles, resulting in the loss of nutrient in soil eventually (Fang et al 2012). Research reported that the annual eroded thickness of purplish red feldspathic sandstone and grey white one in valleys was 35mm and 14mm respectively (Shi et al 1999), as a result, soil resource and ecological environment was deteriorated by the poor vegetation cover due to the increased eroded thickness and poor water retention capacity of sandy soil in feldspathic sandstone area.…”

Section: Fig 1 Landform In Feldspathic Sandstone Areamentioning

confidence: 99%

The remediation method of sandy land in the feldspathic sandstone area

2017

SDRP-JESES

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The effects of rainfall regimes and land use changes on runoff and soil loss in a small mountainous watershed

Cited by 126 publications

References 52 publications

Rainfall Characterization and Sedimentological Responses of Watersheds With Different Land Uses to Precipitation in the Semiarid Region of Brazil

Rainfall Characterization and Sedimentological Responses of Watersheds With Different Land Uses to Precipitation in the Semiarid Region of Brazil

Buffering capacity of paddy field as the reservoir of rainwater and surface runoff in the Lowokwaru subdistrict, Malang, East Java

The remediation method of sandy land in the feldspathic sandstone area

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