نتایج جستجو برای: soil chemicophysical properties

تعداد نتایج: 1030465  

2013
J. Martín

Correspondence José Martín, Departamento ae Ecología Evolutiva, Museo Nacional de Ciencías Naturales, eSle, José Gutiérrez Abaseal 2, 28006 Madrid, Spaín, Tel. +34914111328; Fax: +34 915645078 Email: [email protected] Amphisbaenians are reptiles specialized for a fossoríal lifestyle, which may limit their opportunities for microhabitat selection in comparison with epigeal reptiles, \Ve ...

2014
Jinman Wang Zhongke Bai Peiling Yang

The effect of gypsum on the physical and chemical characteristics of sodic soils is nonlinear and controlled by multiple factors. The support vector machine (SVM) is able to solve practical problems such as small samples, nonlinearity, high dimensions, and local minima points. This paper reports the use of the SVM regression method to predict changes in the chemical properties of sodic soils un...

2012
Fabiano A. Petter Beata E. Madari

Due to the high activity of microorganisms, the loss of soil organic matter is high in tropical regions. This loss becomes even greater if the soil is managed improperly or when there is no technology that leverages the permanence of the soil carbon by maintaining appropriate levels of organic matter, providing chemical, physical and biological soil improvements and contributing to reduce CO2 e...

2014
Shyam Veer Singh

The utilization of treated agro-industrial effluents has been recommended as sound option for agriculture irrigations practices and sustainable land management programme. This paper presents the impact of utilizing treated effluent form a distillery industry on physico-chemical properties of soils in an agriculture plot. The effluent was applied in 50 and 100% strength and a control plot receiv...

2008
Carmen Trasar-Cepeda María Carmen Leirós Fernando Gil-Sotres

Human activity is one of the main causes of the physical, chemical and biological degradation of soils. This degradation implies a change in soil quality as it involves both a decrease in productivity and changes in the ecological functions of the soil. The objective of the present study was to investigate the effect of soil use on soil biochemical properties, with the aim of providing data tha...

2015
Zhongsheng He Jinfu Liu Songjin Su Shiqun Zheng Daowei Xu Zeyan Wu Wei Hong James Li-Ming Wang Raffaella Balestrini

The aim of this study is to analyze the effects of forest gaps on the variations of soil properties in Castanopsis kawakamii natural forest. Soil physical and chemical properties in various sizes and development stages were studied in C. kawakamii natural forest gaps. The results showed that forest gaps in various sizes and development stages could improve soil pore space structure and water ch...

2015
Enrique Arévalo-Gardini Manuel Canto Julio Alegre Oscar Loli Alberto Julca Virupax Baligar Raffaella Balestrini

Growing cacao (Theobroma cacao L.) in an agroforestry system generates a productive use of the land, preserves the best conditions for physical, chemical and biological properties of tropical soils, and plays an important role in improving cacao production and fertility of degraded tropical soils. The aim of this study was to evaluate the impact of two long term agroforestry systems of cacao ma...

2017
Witoon Purahong Katherina A. Pietsch Guillaume Lentendu Ricardo Schöps Helge Bruelheide Christian Wirth François Buscot Tesfaye Wubet

The deadwood mycobiome, also known as wood-inhabiting fungi (WIF), are among the key players in wood decomposition, having a large impact on nutrient cycling in forest soils. However, our knowledge of WIF richness and distribution patterns in different forest biomes is limited. Here, we used pyrotag sequencing of the fungal internal transcribed spacer (ITS2) region to characterize the deadwood ...

2016
Ning Yang Dongsheng Zou Manyuan Yang Zhonggui Lin

Crust restoration is increasingly being done but we lack quantitative information on soil improvements. The study aimed to elucidate the dynamics involving soil microbial biomass carbon and soil dissolved organic carbon in the re-vegetation chronosequences of a hillslope land with purple soil in Hengyang, Hunan Province. The soil can cause serious disasters with both soil erosion and seasonal d...

2016
Ashish A. Malik Somak Chowdhury Veronika Schlager Anna Oliver Jeremy Puissant Perla G. M. Vazquez Nico Jehmlich Martin von Bergen Robert I. Griffiths Gerd Gleixner

Despite several lines of observational evidence, there is a lack of consensus on whether higher fungal:bacterial (F:B) ratios directly cause higher soil carbon (C) storage. We employed RNA sequencing, protein profiling and isotope tracer techniques to evaluate whether differing F:B ratios are associated with differences in C storage. A mesocosm (13)C labeled foliar litter decomposition experime...

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