2018
DOI: 10.1016/j.catena.2018.05.009
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Soil aggregate stability under different rain conditions for three vegetation types on the Loess Plateau (China)

Abstract: Soil aggregate stability is essential for moderating the soil quality and preventing soil erosion. Vegetation restoration may effectively increase the stability of soil aggregates via soil organic matter. This study was designed to investigate the effects of vegetation types with long-term revegetation on the soil aggregate characteristics. Three vegetation type zones (grass land, forest-grass land and forest land) were selected in the Yanhe Watershed (northwest China) as the subjects. Soil aggregate stability… Show more

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Cited by 97 publications
(43 citation statements)
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“…Coarse soil texture means large and more numerous soil pores, which benefits downward transport of fine particle in the process of surface water infiltration [42,43]. Soil particle organic matters easily combine with fine particles to form organic-inorganic complexes or soil aggregates, which reduces the moving ability of clay and silt [12,13]. Low SOC content in the soils of the JRC restricts the protection ability to fine particle, thus the possibility of soil erosion depends on soil particle size distribution, i.e., K factor is mainly affected by soil texture.…”
Section: Discussionmentioning
confidence: 99%
“…Coarse soil texture means large and more numerous soil pores, which benefits downward transport of fine particle in the process of surface water infiltration [42,43]. Soil particle organic matters easily combine with fine particles to form organic-inorganic complexes or soil aggregates, which reduces the moving ability of clay and silt [12,13]. Low SOC content in the soils of the JRC restricts the protection ability to fine particle, thus the possibility of soil erosion depends on soil particle size distribution, i.e., K factor is mainly affected by soil texture.…”
Section: Discussionmentioning
confidence: 99%
“…43 Todavia, o reflorestamento das áreas agricultáveis ou significativos períodos de pousio podem proporcionar um método efetivo para a proteção dos solos da erosão e da degradação, assim como uma possível regeneração das propriedades estruturais. [44][45][46] Um agregado é um conjunto de partículas primárias (argila, silte e areia) do solo que se aderem umas às outras mais fortemente do que as outras partículas circunvizinhas comportando-se mecanicamente como unidade estrutural (Figura 3). Se formado naturalmente é denominado ped, mas se formado artificialmente por atividade humana como a aração, gradagem ou escavação é denominado torrão.…”
Section: Processos Erosivos E Estabilidade De Agregados Do Solounclassified
“…[47][48][49][50] A distribuição das classes ou tamanhos de agregados é considerada um fator importante para a germinação de sementes e para o desenvolvimento das raízes, servindo como indicador da qualidade do solo. [44][45][46][47][48][49][50][51][52][53] A estabilidade de agregados é um fator relevante no controle da erosão hídrica em solos tropicais ácidos, pois a erodibilidade dos solos é diretamente relacionada à estabilidade de agregados em água. Além disso, a prolongada existência de poros maiores no solo, que favorecem altas taxas de infiltração e aeração, depende da estabilidade dos agregados.…”
Section: Processos Erosivos E Estabilidade De Agregados Do Solounclassified
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“…On one hand, NO x comes from the natural factors of nitrate caused by decay of organism after biological death and plant straw-burning as well as in the lightning process; on the other hand, it stems from the artificial factors, for instance, iron and steel smelting; petroleum cracking and coal-based fossil fuel power generation; fuel vehicle exhaust emissions [1,2]; and NO x decomposition under the action of soil microorganisms, which is caused by the large amount of nitrogen fertilizer applied in farmland [3,4]. The emission of toxic waste gases has resulted in a significant increase in the content of NO x in the atmosphere, which is damaging to human organs, such as the heart and lungs, and reducing the body's immunity [5], combining with volatile organic compounds to produce ozone [6], making the human body susceptible to respiratory diseases such as coughs, sore throat, and bronchitis [7,8]; it can also lead to premature birth [9], severely inhibiting photosynthesis, and thus affects plant growth and oxygen conversion [10,11]; but, at the same time, produces photochemical smog [12,13] and acid rain [14]. Furthermore, it forms aerosol with SO 2 , dust, and water vapor, then produces PM2.5 and other small particle size air pollution suspensions, namely, haze, which cause serious air pollution worldwide [15,16].…”
Section: Introductionmentioning
confidence: 99%