ENVIRONMENTAL FRAGILITY PROVIDED BY SOILS OF A PLATEAU EDGE OF SOUTH BRAZIL, ON ATLANTIC FOREST BIOME

Plateau areas have been considered with high land-use capacity in the Brazilian Meridional Plateau Edge of South Brazil. These areas belong Atlantic Forest biome, the second most extinction threatened ecoregion in the world, and weak knowledge about the environment leads to intensive use and degradation. We aimed to identify soil fragility and land-use capacity and limitation of the Brazilian Meridional Plateau Edge, in South Brazil, by the soil properties. Soil morphology, steady-state water infiltration, and physical and chemical properties at 0.00-0.10 and 0.10-0.20 m layers were evaluated at 57 sampling points in a grid of 20 x 20 m. Although under a small elevation slope, these areas have high soils and their properties variability, which implies high natural fragility. Unlike the soils and properties expected by farmers and scientists, naturally fragile soils (Leptosols, Regosols) with only patches of developed soils (Cambisols, Alisols, Planosols/Gleysols) predominate in these areas. The proper land-use and management of the soil and its landscapes depend on a detailed knowledge of the soil. Because, considering only the expected soil and environment capacity without the evaluation obtained with this study, the soils were intensively used and degraded.

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Effects of Land Use on Soil Physical and Chemical Properties in Akokwa Area of Imo State, Nigeria

International Journal of Life-Sciences Scientific Research ◽

10.21276/ijlssr.2016.2.3.14 ◽

2016 ◽

Vol 2 (3) ◽

Cited By ~ 2

Keyword(s):

Land Use ◽

Chemical Properties ◽

Physical And Chemical Properties ◽

Imo State ◽

Physical And Chemical ◽

Effects Of Land Use ◽

And Chemical Properties

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Rethinking Eucalyptus globulus Labill. Based Land Use Systems in Smallholder Farmers Livelihoods: A Case of Kolobo Watershed, West Shewa, Ethiopia

Ekológia (Bratislava) ◽

10.2478/eko-2018-0006 ◽

2018 ◽

Vol 37 (1) ◽

pp. 57-68 ◽

Cited By ~ 1

Author(s):

Dadi Feyisa ◽

Endalkachew Kissi ◽

Zerihun Kebebew

Keyword(s):

Land Use ◽

Food Security ◽

Eucalyptus Globulus ◽

Smallholder Farmers ◽

Chemical Properties ◽

Exchange Capacity ◽

Cultivated Land ◽

Central Highland ◽

Land Use System ◽

Physical And Chemical

AbstractDespite their restriction, smallholder farmers have been continuing growing Eucalyptus globulus in the cultivated land in the central highland of Ethiopia. Literature has shown controversial issues against E. globulus. Therefore, the objective of the study was to investigate the compatibility of E. globulus in the smallholder farmers’ land use system. Soil samples were collected from five different land uses and analysed for selected physical and chemical properties. The socioeconomic contribution of E. globulus was collected through household surveys from 110 households. Analysis of soil showed that organic carbon (OC), total nitrogen (TN) and cation exchange capacity (CEC) were significantly higher (P<0.05) under E. globulus compared to the cultivated land. The survey results also showed that the largest proportion (58%) of households was interested in growing E. globulus because of its multiple uses. About 83% of households responded that E. globulus help them to attain food security through increasing the purchasing power of smallholder farmers to buy agricultural inputs and food. This study has substantiated the role of E. globulus in the land use system of smallholder farmers. Most of the soil fertility indicators were better under E. globulus. The present finding reveals that E. globulus degrade the soil seemingly difficult to generalise. Growing E. globulus must be promoted under appealing land use to enhance smallholder farmers’ livelihoods. Removing E. globulus from the land use system may jeopardise the food security situation of many households.

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The Effect of Slope Position and Land Use on Some Soil Physical and Chemical Properties in Koohrang Area of Chaharmahal and Bakhtiari Province

Journal of Water and Soil Science ◽

10.47176/jwss.24.1.40741 ◽

2020 ◽

Vol 24 (1) ◽

Keyword(s):

Land Use ◽

Chemical Properties ◽

Slope Position ◽

Physical And Chemical Properties ◽

Physical And Chemical ◽

And Chemical Properties

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Variation of soil nutrients and bacterial community diversity of different land utilization types in Yangtze River Basin, Chongqing Municipality

PeerJ ◽

10.7717/peerj.9386 ◽

2020 ◽

Vol 8 ◽

pp. e9386

Author(s):

Yanlin Li ◽

Chunmei Zeng ◽

Meijun Long

Keyword(s):

Land Use ◽

River Basin ◽

Yangtze River ◽

Yangtze River Basin ◽

Chemical Properties ◽

Physical And Chemical Properties ◽

Chongqing Municipality ◽

Land Use Types ◽

Physical And Chemical ◽

And Chemical Properties

The diversity and community distribution of soil bacteria in different land use types in Yangtze River Basin, Chongqing Municipality were studied by using Illumina MiSeq analysis methods. Soil physical and chemical properties were determined, and correlation analyses were performed to identify the key factors affecting bacterial numbers and α-diversity in these soils. The results showed that the soil physical and chemical properties of different land use types decrease in the order: mixed forest (M2) > pure forest (P1) > grassland (G3) > bare land (B4). There were significant differences in bacterial diversity and communities of different land use types. The diversity of different land use types showed the same sequence with the soil physical and chemical properties. The abundance and diversity of bacterial in M2 and P1 soils was significantly higher than that in G3 and B4 soils. At phylum level, G3 and B4 soils were rich in only Proteobacteria and Actinobacteria, whereas M2 and P1 soils were rich in Proteobacteria, Actinobacteria and Firmicutes. At genus level, Faecalibacterium and Agathobacter were the most abundant populations in M2 soil and were not found in other soils. Pearson correlation analysis showed that soil moisture content, pH, AN, AP, AK and soil enzyme activity were significantly related to bacterial numbers, diversity and community distribution.

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Potential medicinal use of forest species of the Deciduous Seasonal Forest from Atlantic Forest Biome, South Brazil

Brazilian Archives of Biology and Technology ◽

10.1590/1678-4324-2016150329 ◽

2016 ◽

Vol 59 (0) ◽

Cited By ~ 3

Author(s):

Ana Paula Moreira Rovedder ◽

Eliara Marin Piazza ◽

Pedro Augusto Thomas ◽

Roselene Marostega Felker ◽

Rafaela Badinelli Hummel ◽

...

Keyword(s):

Atlantic Forest ◽

Forest Species ◽

Medicinal Use ◽

South Brazil ◽

Forest Biome

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Influences of Land Use/ Cover Changes on Soil Properties in Rib Watershed, Ethiopia

10.21203/rs.3.rs-94151/v1 ◽

2020 ◽

Author(s):

Fentanesh Haile Buruso ◽

Zenebe Admasu Teferi

Keyword(s):

Land Use ◽

Soil Properties ◽

Chemical Properties ◽

Temporal Variations ◽

Natural Forest ◽

Physical And Chemical Properties ◽

Natural Forests ◽

Significant Difference ◽

Physical And Chemical ◽

And Chemical Properties

Abstract BackgroundThe decrease in the area under natural vegetation and its conversion into other types of use has resulted in resource degradation including soil quality loss. Soil properties response to changes in land use/ cover has shown spatial and temporal variations. Hence this study was carried out to examine the influence of land use/ cover changes on physical and chemical properties of the soils in Rib watershed. Soil samples were taken over three selected land use/ covers (natural forest, grazing and cultivated lands) in two agro- ecological zones (Dega and High Dega). Multivariate analysis of variance (MNOVA) and Pearson’s correlation was computed. ResultsThe study revealed that land use/ cover and altitude have influenced physical and chemical properties of the soil in the study watershed. Significant difference in distribution of soil texture, BD, OC, TN and pH among land use/ covers have been observed. Natural forest had higher OC, OC stock and TN than grazing and cultivated lands. The mean OC stock ranged from 188.32 t/ha in natural forest to 72.75t/ha in cultivated lands. Soil pH was slightly higher for natural forests and lower in the soils of grazing and cultivated lands. Significant difference (P<0.05) among the two agro ecologies were also observed in OC, Ca2+, clay, and silt.. ConclusionTherefore, land use/ cover changes have affected the concentration of TN, OC, increase soil acidity and compaction that can affect productive of soils and production of crops.

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SOIL COVER AND CHEMICAL AND PHYSICAL ATTRIBUTES IN OXISOL IN THE ATLANTIC FOREST BIOME

Revista Árvore ◽

10.1590/0100-67622016000200004 ◽

2016 ◽

Vol 40 (2) ◽

pp. 219-228 ◽

Cited By ~ 3

Author(s):

Ana Paula Almeida Bertossi ◽

Paulo Roberto da Rocha Júnior ◽

Paulo Henrique Ribeiro ◽

João Paulo Cunha de Menezes ◽

Roberto Avelino Cecílio ◽

...

Keyword(s):

Atlantic Forest ◽

Soil Cover ◽

Chemical Characterization ◽

Coffee Plantation ◽

Physical And Chemical Characterization ◽

Physical Attributes ◽

Low Levels ◽

Physical And Chemical ◽

Forest Biome

ABSTRACT The objective of this study was to evaluate the chemical and physical attributes of different soil cover in a Oxisol with a strong wavy relief in the Atlantic Forest Biome, in which were selected three watersheds, employed with grazing (watershed P), forest (watershed M) and coffee (watershed C). Deformed and not deformed samples were collected in three depths for physical and chemical characterization. The chemical characteristics of soil in different watershed studies presented low levels of fertility. It was observed an elevation of pH in the soil and contents of Ca2+ and Mg2+ in the watersheds P and C in relation to the watershed M. Due to deforestation and the establishment of agriculture and livestock, there was a decrease in the contents of soil organic matter in the watershed P and C, not altering the physical characteristics of the soil in the watershed P. The implementation of coffee plantation is causing a reduction in the soil quality of watershed C in comparison to the watershed P and M, therefore indicating a need to adequate soil management in this area.

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Corrigenda - The effects of minimum cultivation after three years on some physical and chemical properties of a red-brown earth at Forbes, NSW.

Soil Research ◽

10.1071/sr9910263c ◽

1991 ◽

Vol 29 (2) ◽

pp. 263 ◽

Cited By ~ 1

Author(s):

PP Cavanagh ◽

AJ Koppi ◽

AB Mcbratney

Keyword(s):

Organic Carbon ◽

Physical Properties ◽

Bulk Density ◽

Total Nitrogen ◽

Chemical Properties ◽

Water Infiltration ◽

Electrolytic Conductivity ◽

Physical And Chemical Properties ◽

Physical And Chemical ◽

And Chemical Properties

Reducing cultivation may improve many soil physical and chemical properties of a red-brown earth. A trial was set up in 1986 on a red-brown earth near Forbes, N.S.W., comparing direct-drilling and conventional-cultivation crop establishment techniques. The surface soil (0-100 mm) was sampled at the end of the third year and assessed for macropore structure, infiltration characteristics, bulk density, pH, electrolytic conductivity, organic carbon and total nitrogen content. Cultivation degraded some desirable soil physical properties as indicated by data obtained from image analysis and infiltration. Bulk density did not mirror differences in macroporosity. Organic carbon, total nitrogen and electrolytic conductivity levels were higher in direct-drilled soil in comparison to conventionally tilled soil. It ib concluded that the improvement of soil chemical and physical properties afforded by a reduction in tillage would lead to an increase in soil water infiltration rate and storage.

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