نتایج جستجو برای: soil degradation index

تعداد نتایج: 710021  

2006
Thomas Schmid Magaly Koch José Gumuzzio Isaac Medel

Soil degradation implies a decline in the capacity of the soil to perform environmental regulatory functions and yield agricultural goods. Soils are affected by regressive and/or degradative evolution processes as a result of natural causes as well as anthropogenic influences in semi-arid regions such as Central Spain. The main aim of this work is to evaluate the capacity of hyperspectral HyMap...

2014
Zhongling Guo Ning Huang Zhibao Dong Robert Scott Van Pelt Ted M. Zobeck Douglas L. Karlen Marc A. Rosen

Soil degradation is one of the most serious ecological problems in the world. In arid and semi-arid northern China, soil degradation predominantly arises from wind erosion. Trends in soil degradation caused by wind erosion in northern China frequently change with human activities and climatic change. To decrease soil loss by wind erosion and enhance local ecosystems, the Chinese government has ...

Extended abstract 1- Introduction Soil erosion is one of the most important problems in the arid and semi-arid areas in Iran and the knowledge about its content has an important role on the management practices of soil conservation. Topography as one of the soil-making factors affects the physical properties of the soil through the aspect and the degree of the slope. The aspect of the slope c...

2013
Y Liang X Lin S Yamada M Inoue K Inosako

Soil degradation has been a very serious problem for sustainable production, especially by a re-cropping of greenhouse-cultivated cucumber (Cucumis statirus L.). The aim of this research was to expound the actuality for soil degradation, at the same time, put forward some suggestion for preventing from soil degradation and maintain sustainable production in greenhouse basic on the two experimen...

2015

Land degradation and soil erosion threaten agricultural productivity, food security and environmental sustainability. Because formation of new soil takes place over a period of thousands of years, in human terms it is essentially a finite resource. Human activity has accelerated erosion rates through inappropriate land management practices, most importantly soil sealing, deforestation and inten...

Journal: :Environmental science & technology 2002
Ting Tao Gary E Maciel

Because methyl bromide (CH3Br) is a widely used agricultural fumigant for soil disinfection, it is important to know the chemical behavior and fate of CH3Br as a result of its use for soil treatment. A solid-state 13C NMR study of 13CH3Br-treated soil and soil-component samples shows that methylation of soil organic matter may be the major pathway for degradation of CH3Br in soils. Adsorption o...

Journal: :Applied and environmental microbiology 2003
Steven D Siciliano James J Germida Kathy Banks Charles W Greer

The purpose of this study was to investigate the mechanism by which phytoremediation systems promote hydrocarbon degradation in soil. The composition and degradation capacity of the bulk soil microbial community during the phytoremediation of soil contaminated with aged hydrocarbons was assessed. In the bulk soil, the level of catabolic genes involved in hydrocarbon degradation (ndoB, alkB, and...

Journal: :Environmental science & technology 2012
Omar R Harvey Li-Jung Kuo Andrew R Zimmerman Patrick Louchouarn James E Amonette Bruce E Herbert

The ability of engineered black carbons (or biochars) to resist abiotic and, or biotic degradation (herein referred to as recalcitrance) is crucial to their successful deployment as a soil carbon sequestration strategy. A new recalcitrance index, the R(50), for assessing biochar quality for carbon sequestration is proposed. The R(50) is based on the relative thermal stability of a given biochar...

Journal: :international journal of environmental research 2012
s.t. maheswari a. ramesh

adsorption of anilofos was studied in four soils (topsoil from alfisol, inceptisol, oxisol and vertisol). the order of adsorption of anilofos was vertisol > oxisol > alfisol > inceptisol. the soil sorption coefficient k and the soil organic carbon sorption coefficient koc are the basic parameters used for describing the environmental fate of the herbicides. in top soil the calculated k values ...

2012
Paola Grenni M. Sonia Rodríguez-Cruz Eliseo Herrero-Hernández Jesús M. Marín-Benito Maria J. Sánchez-Martín Anna Barra Caracciolo

The herbicide terbuthylazine is widely used within the EU; however its frequent detection in surface and groundwater, together with its intrinsic toxicological properties, may pose a risk both for human and environmental health. Organic amendments have recently been proposed as a possible herbicide sorbent in soil, in order to limit herbicide movement from soil to water. The environmental fate ...

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