Soil organic matter characteristics, biochemical activity and antioxidant capacity in Mediterranean land use systems

The objective of this study was to evaluate carbon input in labile and stable fractions in an ARGISOL of northwestern Brazil under different land use systems. Use systems being evaluated include: forest - MA (reference), agrosilvopasture - TCP (teak, cocoa and pasture); agroforest - TC (teak and cocoa); teak forest at 8 and 5 years - T8 and T5, and pasture - PA. In each system three furrows were made at depths of 0-5 cm, 5-10 cm and 10-20 cm. An area consisting of native vegetation (forest) adjacent to the experiment was sampled and used as control treatment. The use systems MA, T8 and T5 had higher levels of total organic carbon (COT) and the MA system had higher levels of labile carbon (CL) than the other systems, with the exception of TC at a depth of 10-20 cm. In the MA system, COT levels were higher in comparison to use systems TCP, TC and PA while CL levels were higher than the levels observed in use systems TCP and TC. In most cases being analyzed, CL levels were lower than COT levels, therefore this trait can be used as an indicator to assess anthropogenic changes relating to the maintenance or condition of soil organic matter.

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ORGANIC CARBON AND TOTAL NITROGEN IN THE DENSIMETRIC FRACTIONS OF ORGANIC MATTER UNDER DIFFERENT SOIL MANAGEMENT

Revista Caatinga ◽

10.1590/1983-21252016v29n201rc ◽

2016 ◽

Vol 29 (2) ◽

pp. 263-273 ◽

Cited By ~ 1

Author(s):

MARCELO RIBEIRO VILELA PRADO ◽

FABRICIO TOMAZ RAMOS ◽

OSCARLINA LÚCIA DOS SANTOS WEBER ◽

CAIO BATISTA MÜLLER

Keyword(s):

Land Use ◽

Organic Matter ◽

Soil Organic Matter ◽

Organic Carbon ◽

Total Nitrogen ◽

Agroforestry System ◽

Native Forest ◽

Land Use Systems ◽

System 2 ◽

Heavy Fractions

ABSTRACT: The evaluation of land use and management by the measurement of soil organic matter and its fractions has gained attention since it helps in the understanding of the dynamics of their contribution to soil productivity, especially in tropical environments. This study was conducted in the municipality of Colorado do Oeste, state of Rondônia, Brazil and its aim was to determinethe quantity of organic carbon and total nitrogen in the light and heavy fractions of organic matter in the surface layers of a typic hapludalf under different land use systems: Native Forest: open evergreen forest, reference environment; Agroforestry System 1: teak (Tectona grandis LF) and kudzu (Pueraria montana); Agroforestry System 2: coffee (Coffea canephora), marandu palisade grass (Brachiaria brizantha cv. Marandu), "pinho cuiabano" (Parkia multijuga), teak and kudzu.; Agroforestry System 3: teak and cocoa (Theobroma cacao); Silvopasture System: teak, cocoa and marandu palisade grass; and Extensive Grazing System: marandu palisade grass. The experimental design was a randomized block in split-split plots (use systems versus soil layers of 0-0.05 and 0.05-0.10 m) with three replications. The results showed that relative to Native Forest, the Agroforestry System 2 had equal- and greater amounts of organic carbon and total nitrogen respectively (light and heavy fractions) in the soil organic matter, with the light fraction being responsible for storage of approximately 45% and 70% of the organic carbon and total nitrogen, respectively. Therefore, the light densimetric fraction proved to be useful in the early identification of the general decline of the soil organic matter in the land use systems evaluated.

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Soil properties and earthworm dynamics affected by land use systems in western Chitwan, Nepal

Journal of the Institute of Agriculture and Animal Science ◽

10.3126/jiaas.v33i0.20694 ◽

2018 ◽

pp. 123-128 ◽

Cited By ~ 1

Author(s):

R. P. Chauhan ◽

K. R. Pande ◽

S. C. Shah ◽

D. D. Dhakal

Keyword(s):

Land Use ◽

Organic Matter ◽

Soil Organic Matter ◽

Soil Fertility ◽

Soil Nitrogen ◽

Forest Land ◽

Pasture Land ◽

Land Use Systems ◽

Total Soil ◽

Total Soil Nitrogen

Field experiments were conducted in acidic soils of Mangalpur and Fulbari Village Development Committees in western Chitwan, Nepal to study the effects of different land use systems on soil properties and earthworm dynamics. Seven land use systems (cereal based lowland, cereal based upland, vegetable farm land, fruit orchard land, pasture land, forest land and farmer’s field) were used and they were replicated four times in randomized complete block designs. Soil organic matter and total soil nitrogen were significantly higher from pasture land (4.7 % and 0.2 %) and the lowest were from farmer’s field (2.4 % and 0.1 %). However, available soil phosphorous content was significantly higher from cereal based upland (448.3 kg ha-1) and it was the lowest from forest land (13.0 kg ha-1). The highest earthworm count was observed from pasture land (10.1 numbers per trap) than others but it was the lowest from farmer’s field. There were significant positive correlations between soil organic matter content and the earthworm count (r= 0.96**) and between total soil nitrogen content and earthworm count (r= 0.80**). In contrast, a significant negative correlation was observed between earthworm count and available P (r= -0.51**). Correlation between earthworm count and silt content was positive (r= 0.68**) but between earthworm count and sand content was negative (r= -0.64**). However, there were no significant relationships of earthworm count with available K, pH, bulk density and clay content of soils. The soil organic matter, total soil nitrogen and earthworm count were higher from pasture soil than other soils. As soil organic matter, total soil N, available soil P and soil texture regulated earthworm dynamics in soils. Earthworm population may be used as a bio-indicator of soil fertility status and it can be developed as an alternative technique for soil fertility evaluation after quantification and verification from further experiments on earthworm dynamics under different land use systems.Journal of the Institute of Agriculture and Animal Science.Vol. 33-34, 2015, page: 123-128

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Contrasting land use systems and soil organic matter quality and temperature sensitivity in North Eastern India

Soil and Tillage Research ◽

10.1016/j.still.2020.104573 ◽

2020 ◽

Vol 199 ◽

pp. 104573

Author(s):

Avijit Ghosh ◽

Anshuman Das ◽

Debarup Das ◽

Prasenjit Ray ◽

Ranjan Bhattacharyya ◽

...

Keyword(s):

Land Use ◽

Organic Matter ◽

Soil Organic Matter ◽

Temperature Sensitivity ◽

Eastern India ◽

Organic Matter Quality ◽

Land Use Systems ◽

North Eastern ◽

North Eastern India ◽

Soil Organic Matter Quality

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Accumulation patterns of soil organic matter in forests as a legacy of historical charcoal burning

10.5194/egusphere-egu21-5161 ◽

2021 ◽

Author(s):

Anna Schneider ◽

Alexander Bonhage ◽

Florian Hirsch ◽

Alexandra Raab ◽

Thomas Raab

Keyword(s):

Land Use ◽

Organic Matter ◽

Soil Organic Matter ◽

Large Scale ◽

Soil Surface ◽

Landscape Scale ◽

Legacy Effects ◽

Charcoal Production ◽

Study Region ◽

Land Use Legacies

<p>Human land use and occupation often lead to a high heterogeneity of soil stratigraphy and properties in landscapes within small, clearly delimited areas. Legacy effects of past land use also are also abundant in recent forest areas. Although such land use legacies can occur on considerable fractions of the soil surface, they are hardly considered in soil mapping and inventories. The heterogenous spatial distribution of land use legacy soils challenges the quantification of their impacts on the landscape scale. Relict charcoal hearths (RCH) are a widespread example for the long-lasting effect of historical land use on soil landscapes in forests of many European countries and also northeastern USA. Soils on RCH clearly differ from surrounding forest soils in their stratigraphy and properties, and are most prominently characterized by a technogenic substrate layer with high contents of charcoal. The properties of RCH soils have recently been studied for several regions, but their relevance on the landscape scale has hardly been quantified.</p><p>We analyse and discuss the distribution and ecological relevance of land use legacy soils across scales for RCH in the state of Brandenburg, Germany, with a focus on soil organic matter (SOM) stocks. Our analysis is based on a large-scale mapping of RCH from digital elevation models (DEM), combined with modelled SOM stocks in RCH soils.&#160;The distribution of RCH soils in the study region shows heterogeneity at different scales. The large-scale variation is related to the concentration of charcoal production to specific forest areas and the small-scale accumulation pattern is related to the irregular distribution of single RCH within the charcoal production fields. Considerable fractions of the surface area are covered by RCH soils in the major charcoal production areas within the study region. The results also show that RCH can significantly contribute to the soil organic matter stocks of forests, even for areas where they cover only a small fraction of the soil surface. The study highlights that considering land use legacy effects can be relevant for the results of soil mapping and inventories; and that prospecting and mapping land use legacies from DEM can contribute to improving such approaches.</p>

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Land Use and Soil Management Effects on Soil Organic Matter Dynamics on Alfisols In Western Nigeria

Soil Processes and the Carbon Cycle ◽

10.1201/9780203739273-9 ◽

2018 ◽

pp. 109-126 ◽

Cited By ~ 5

Author(s):

R. Lal

Keyword(s):

Land Use ◽

Organic Matter ◽

Soil Organic Matter ◽

Soil Management ◽

Soil Organic Matter Dynamics ◽

Organic Matter Dynamics ◽

Management Effects

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Effects of changing land use in the Netherlands on net carbon fixation.

Netherlands Journal of Agricultural Science ◽

10.18174/njas.v39i4.16534 ◽

1991 ◽

Vol 39 (4) ◽

pp. 237-246 ◽

Cited By ~ 3

Author(s):

J. Wolf ◽

L.H.J.M. Janssen

Keyword(s):

Land Use ◽

Organic Matter ◽

Soil Organic Matter ◽

The Netherlands ◽

Input Data ◽

Carbon Fixation ◽

Arable Land ◽

Rate Of Change ◽

Pool Size ◽

Average Amount

The changed crop rotation on arable land, the decreasing grassland area and the increase in forest area in the Netherlands resulted in a decrease in C pool size. For the calculation of this C pool a method requiring only three input data (average amount of crop or tree residue rate, soil organic matter decomposition and the humification coefficient) has been applied. However the method can only be applied to situations in equilibrium where all three input data are equal. For a changing land use a new state of equilibrium and rate of change in C pool size can be calculated. (Abstract retrieved from CAB Abstracts by CABI’s permission)

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