scholarly journals KAJIAN SIFAT FISIKA TANAH BEBERAPA PENGGUNAAN LAHAN DI BUKIT GAJABUIH KAWASAN HUTAN HUJAN TROPIK GUNUNG GADUT PADANG

Jurnal Solum ◽  
2007 ◽  
Vol 4 (2) ◽  
pp. 49
Author(s):  
Yulnafatmawita Yulnafatmawita ◽  
Utri Luki ◽  
Afri Yana
Keyword(s):  
Land Use ◽  
Physical Properties ◽  
Clay Content ◽  
Soil Physical Properties ◽  
Annual Rainfall ◽  
Perennial Plant ◽  
Mixed Land Use ◽  
Mixed Field ◽  
Clay Percentage ◽  
Permeability Rate

Study about soil physical properties of Bukik Gajabuih Padang, the area receiving high annual rainfall (>5000 mm), was conducted at different land uses in 2006.  The objective of this research was to measure the change of soil physical properties as forest was cut down and converted into mixed perennial plant field and into bush land.  The results showed that changing forest area into land use for mixed perennial trees for more than 50 years increased SOM content on the top 0-20 cm, but decreased on the 20-40 cm layer.  The highest SOM content was found under bush land.  Therefore, the bulk densisty of the soil decreased from forest to mixed land use and to bush land. The opposite trend was found for total pores and permeability rate.  While the plasticity index of the soil followed the clay percentage of the soil texture, it increased by increasing clay content of soil from forest into mixed field and bush land use.Key Words: Land Use Change, Soil Organic Carbon, Soil Physical Properties

Land Use Ecology of Major Ecosystems in Cold Deserts of Himachal Pradesh

2015 ◽  
Vol 38 (4) ◽  
pp. 295-301
Author(s):  
Poonam ◽  
Rajan Bawa ◽  
Hari Sankhyan ◽  
D. Nayak ◽  
S.S. Sharma
Keyword(s):  
Land Use ◽  
Physical Properties ◽  
Nutrient Status ◽  
Soil Physical Properties ◽  
Himachal Pradesh ◽  
Cropping Pattern ◽  
Land Use Pattern ◽  
Maximum Area ◽  
Farming Community ◽  
Use Pattern

The present study was conducted in Goshal, one of the largest villages of Lahaul valley of Himachal Pradesh during 2010 to 2013 to study the land use pattern of village Goshal by classifying the study area into three major ecosystems viz; Forest ecosystem, alpine pasture ecosystem and agro-ecosystem and to assess the soil physical properties of these ecosystems. Land use pattern in agro ecosystem revealed that of the total area of village Goshal, maximum area was occupied under second grade irrigated area and maximum area under non cultivable lands was reported under grasslands. Pea occupied maximum per cent area which showed the shifting of the farming community from traditional cropping pattern to cash crops. It was further observed that the villagers opted plantations of poplars and willows. The soil physical properties of all the three ecosystems were found medium in available nutrient status.

Soil Physical Properties of Tied Ridges in the Sudan Savannah of Burkina Faso

1988 ◽  
Vol 24 (3) ◽  
pp. 375-384 ◽  
Author(s):  
N. R. Hulugalle ◽  
M. S. Rodriguez
Keyword(s):  
Physical Properties ◽  
Soil Temperature ◽  
Bulk Density ◽  
Soil Water ◽  
Water Retention ◽  
Clay Content ◽  
Soil Physical Properties ◽  
Water Infiltration ◽  
Soil Water Retention ◽  
Maize Varieties

SUMMARYThe soil physical properties of tied ridges were measured in a trial, established in 1983, comparing three treatments: handhoe cultivation and planting on the flat; planting directly without any cultivation on tied ridges constructed the previous year; and handhoe cultivation and remoulding of tied ridges constructed the previous year. Two maize varieties and two management levels were used. The soil properties monitored were particle size distribution, penetro-meter resistance in the surface 20 mm, bulk density, water infiltration, soil water retention and soil temperature.Soil physical properties were affected mainly by the type of seedbed. Clay content in the surface 0.05 m was greater with tied ridging, with that in the furrows being higher than that in the ridge slopes. Daily maximum soil temperature was greatest in the flat planted plots and in the ridge slopes of the tied ridged plots. Penetrometer resistance at a soil water content of 0.05 kg kg−1 was greater in the tied ridged plots. Cumulative infiltration after 2 h was greatest with flat planting. The bulk density of ridge slopes in tied ridged plots was less than that in the furrows and in the flat planted plots. Soil water retention was greatest in the furrows of the tied ridged plots. Clay content was the major factor determining all the soil physical properties measured.

Soil physical properties and their relations to organic carbon pools as affected by land use in an alpine pastureland

Geoderma ◽  
2007 ◽  
Vol 139 (1-2) ◽  
pp. 98-105 ◽  
Author(s):  
Xiao-Gang Li ◽  
Feng-Min Li ◽  
Rengel Zed ◽  
Zheng-Yan Zhan ◽  
Bhupinderpal-Singh
Keyword(s):  
Land Use ◽  
Organic Carbon ◽  
Physical Properties ◽  
Soil Physical Properties ◽  
Carbon Pools

scholarly journals Soil Physical Properties of Arable Land by Land Use Across the Country

2012 ◽  
Vol 45 (3) ◽  
pp. 344-352 ◽  
Author(s):  
H.R. Cho ◽  
Y.S. Zhang ◽  
K.H. Han ◽  
H.J. Cho ◽  
J.H. Ryu ◽  
...  
Keyword(s):  
Land Use ◽  
Physical Properties ◽  
Arable Land ◽  
Soil Physical Properties

scholarly journals Variation of soil organic carbon and physical properties in relation to land uses in the Yellow River Delta, China

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Shuying Jiao ◽  
Junran Li ◽  
Yongqiang Li ◽  
Ziyun Xu ◽  
Baishu Kong ◽  
...  
Keyword(s):  
Land Use ◽  
Physical Properties ◽  
Soil Quality ◽  
Yellow River ◽  
Arable Land ◽  
Yellow River Delta ◽  
Soil Physical Properties ◽  
Land Uses ◽  
Forest Land ◽  
The Yellow River Delta

AbstractSoil physical properties and soil organic carbon (SOC) are considered as important factors of soil quality. Arable land, grassland, and forest land coexist in the saline-alkali reclamation area of the Yellow River Delta (YRD), China. Such different land uses strongly influence the services of ecosystem to induce soil degradation and carbon loss. The objective of this study is to evaluate the variation of soil texture, aggregates stability, and soil carbon affected by land uses. For each land use unit, we collected soil samples from five replicated plots from “S” shape soil profiles to the depth of 50 cm (0–5, 5–10, 10–20, 20–30, and 30–50 cm). The results showed that the grassland had the lowest overall sand content of 39.98–59.34% in the top 50 cm soil profile. The content of soil aggregates > 0.25 mm (R0.25), mean weight diameter and geometric mean diameter were significantly higher in grassland than those of the arable and forest land. R0.25, aggregate stability in arable land in the top 30 cm were higher than that of forest land, but lower in the soil profile below 20 cm, likely due to different root distribution and agricultural practices. The carbon management index (CMI) was considered as the most effective indicator of soil quality. The overall SOC content and CMI in arable land were almost the lowest among three land use types. In combination with SOC, CMI and soil physical properties, we argued that alfalfa grassland had the advantage to promote soil quality compared with arable land and forest land. This result shed light on the variations of soil properties influenced by land uses and the importance to conduct proper land use for the long-term sustainability of the saline-alkali reclamation region.

scholarly journals Linking soil physical properties to the tea bag index for different land uses

2020 ◽  
Author(s):  
Yuting Fu ◽  
Lis de Jonge ◽  
Mogens Greve ◽  
Emmanuel Arthur ◽  
Per Moldrup ◽  
...  
Keyword(s):  
Land Use ◽  
Carbon Sequestration ◽  
Physical Properties ◽  
Soil Physical Properties ◽  
Land Uses ◽  
Cultivated Land ◽  
Natural Group ◽  
Natural Systems ◽  
Rooibos Tea ◽  
Tea Bag Index

<p>Organic matter decomposition is an important process in global carbon cycling and its rate is altered by various factors. Changes in land use can have a significant effect on decomposition rates, with consequences on CO<sub>2</sub> emissions. The tea bag index (TBI) method is recognized as a simple and effective approach to investigate decomposition. Despite the fact that TBI has been globally applied, most research mainly focuses on soil microbiological aspects; the role of soil physical properties have earned less attention. Linking the soil physical properties to TBI can give us a broad understanding on how land use affects the soil microhabitat, and in turn influence carbon sequestration. Here, we measured the decomposition of green and rooibos tea in a transect from the east to west coast of Denmark across four land uses categorized into two groups (natural and cultivated). The natural group comprised forest and heath, and the cultivated group was composed of cereal and grass. Decomposition rate (<em>k</em>) and stabilization factor (<em>S</em>) were calculated after three months tea bag incubation. Soil physical properties including volumetric water content (VWC), air permeability and relative gas diffusivity (D<sub>p</sub>/D<sub>0</sub>) were measured at matric potential of –10 and –100 kPa. The cultivated land uses had higher <em>k</em> and <em>S</em> values compared to natural systems. The <em>S</em> was positively correlated with VWC and negatively correlated with D<sub>p</sub>/D<sub>0</sub> in natural systems while no relationship was found for cultivated land. However, there was a negative correlation of <em>k</em>-VWC and positive correlation of <em>k</em>-D<sub>p</sub>/D<sub>0</sub> in cultivated land, suggesting an impact of soil management and anthropogenic influence on litter decomposition and carbon sequestration.</p>

scholarly journals Implications of agricultural management on the epigeic fauna and soil physical properties of a clayey Oxisol

Revista CERES ◽  
2018 ◽  
Vol 65 (5) ◽  
pp. 443-449 ◽  
Author(s):  
Lidiane Martins da Costa ◽  
Marta Sandra Drescher
Keyword(s):  
Land Use ◽  
Physical Properties ◽  
Crop Production ◽  
Species Abundance ◽  
Total Porosity ◽  
Biological Properties ◽  
Soil Physical Properties ◽  
No Tillage ◽  
Pampa Biome ◽  
Tillage System

ABSTRACT The intensive use of land based on non-conservation practices contributes to the reduction of soil quality. In this sense, the objective of this work was to evaluate the influence of farming systems on clayey Oxisol in the northwest of the state of Rio Grande do Sul on the epigeic fauna and on the soil physical properties. The treatments were composed of land use with Native field, Pasture, Transition, Crop and livestock integration, No-tillage and No-tillage system. The epigeic fauna was evaluated by the installation of seven traps per treatment. The physical properties of density, total porosity, microporosity, macroporosity and soil resistance to penetration were evaluated in samples with undisturbed structure at the 0- 0.07, 0.07-0.15 and 0.15- 0.22m depths, with four replicates. The results indicated that land use only for crop production reduced the abundance of organisms in comparison to the crop-livestock integration. The conversion of the Pampa Biome to the crop system altered its soil physical and biological properties with the transition area presenting intermediate characteristics to both environments. Grazing in the remaining areas of the Pampa Biome, without native field improvement strategies, reduced species abundance and richness. No-tillage and No-tillage system promoted the compaction of the 0.07 -0.15 m layer in a clayey Oxisol.

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