scholarly journals KAJIAN SIFAT FISIKA TANAH DAS SUMPUR BAGIAN HULU KABUPATEN TANAH DATAR

Jurnal Solum ◽  
2007 ◽  
Vol 4 (1) ◽  
pp. 18
Author(s):  
Yulnafatmawita Yulnafatmawita ◽  
Asmar Asmar ◽  
Aulia Rahman
Keyword(s):  
Land Use ◽  
Physical Properties ◽  
Soil Texture ◽  
Rice Field ◽  
Soil Physical Properties ◽  
Survey Method ◽  
Water Drainage ◽  
West Sumatra ◽  
Area Survey ◽  
The Impact

A research about study of soil physical properties in upper part of Sumpur Watershed in Tanah Datar Regency, West Sumatra was conducted in 2005.  The objective of the research was to supply information about soil physical properties in the upper part of Sumpur watershed.  These data are important to predict the erosion that can happen in that area and the impact to the surrounding area.  Survey method with purposive random sampling was employed to this research for sampling soil in the field.  Soil was sampled from each land use randomly.  There were four types of land use found in the area, those were forest, mixed wood, annual season crops, and rice field.  Based on field observation it was found that  there were two classes of soils there, Andisols and Inceptisols.  The results of laboratory analyses showed that soil texture in Andisols was silt loam, it was the same for each land use.  Soil texture in Inceptisols, however, was finer than that in Andisols, it was clay.  Bulk volume and total pores of both Andisol and Inceptisol for each land use were not yet different from those in the forest land use.  Then, the value for plant available water, drainage pores, and water retaining pores in each land use for both soils were still comparable to those in forest and use.   However, soil organic carbon (OC) content tended to decrease as land use change from forest to mixed wood, annual season crops, and rice field at both soils except for mixed wood land use in Inceptisol.  The soil OC in that land use was slightly higer than that in the forest.  Key Words: land use, soil OC, soil physical properties

scholarly journals SOIL COMPACTION OF TIDAL RICE FIELD FROM USE ALSINTAN (CASE STUDY OF TANJUNG LAGO DISTRICT, BANYUASIN REGENCY)

2020 ◽  
Vol 6 (1) ◽  
Author(s):  
Suganda C. Saputra ◽  
M. Eddy Armanto ◽  
Momon Sodik
Keyword(s):  
Physical Properties ◽  
Soil Compaction ◽  
Rice Field ◽  
Soil Physical Properties ◽  
Soil Permeability ◽  
Field Environment ◽  
Combine Harvester ◽  
Materials Used ◽  
The Impact

Combine harvester is a rice harvester that can cut the panicles of standing plants, knock down and clean the grain while crossing the rice fields. The use of combine harvester can potentially damage the soil, the soil becomes hard and the use of fuel causes potential air pollution in the rice field environment. The objectives of this study were to identify the impact of soil compaction due to the use of a combine harvester machine and to determine what physical properties affect the soil compaction due to the use of a combine harvester machine. Equipment and materials used for the sand cone test in this study include:transparent bottles, calibration funnels, plates for sand funnels, hammers, spoons, brushes, chisels, scales and sand. The results showed that soil compaction causes porosity and soil permeability was reduced so that it can inhibit plant growth. Soil compaction affects soil physical properties such as bulk density, porosity, and groundwater content. 

Evaluating the role of soil physical properties on simulated land-atmosphere interactions over South Africa using coupled atmosphere-hydrological modeling

2021 ◽  
Author(s):  
Zhenyu Zhang ◽  
Patrick Laux ◽  
Joël Arnault ◽  
Jianhui Wei ◽  
Jussi Baade ◽  
...  
Keyword(s):  
South Africa ◽  
Physical Properties ◽  
Land Degradation ◽  
Land Surface ◽  
Soil Physical Properties ◽  
Near Surface ◽  
Soil Database ◽  
Global Soil ◽  
The Impact

<p>Land degradation with its direct impact on vegetation, surface soil layers and land surface albedo, has great relevance with the climate system. Assessing the climatic and ecological effects induced by land degradation requires a precise understanding of the interaction between the land surface and atmosphere. In coupled land-atmosphere modeling, the low boundary conditions impact the thermal and hydraulic exchanges at the land surface, therefore regulates the overlying atmosphere by land-atmosphere feedback processes. However, those land-atmosphere interactions are not convincingly represented in coupled land-atmosphere modeling applications. It is partly due to an approximate representation of hydrological processes in land surface modeling. Another source of uncertainties relates to the generalization of soil physical properties in the modeling system. This study focuses on the role of the prescribed physical properties of soil in high-resolution land surface-atmosphere simulations over South Africa. The model used here is the hydrologically-enhanced Weather Research and Forecasting (WRF-Hydro) model. Four commonly used global soil datasets obtained from UN Food and Agriculture Organization (FAO) soil database, Harmonized World Soil Database (HWSD), Global Soil Dataset for Earth System Model (GSDE), and SoilGrids dataset, are incorporated within the WRF-Hydro experiments for investigating the impact of soil information on land-atmosphere interactions. The simulation results of near-surface temperature, skin temperature, and surface energy fluxes are presented and compared to observational-based reference dataset. It is found that simulated soil moisture is largely influenced by soil texture features, which affects its feedback to the atmosphere.</p>

scholarly journals Pengaruh Sifat Fisik Tanah terhadap Hama Simphylid Pada tanaman Nanas (Ananas comosus (L.) Merr) di PT. Great Giant Pineapple Terbanggi Besar Lampung Tengah

2017 ◽  
Vol 15 (3) ◽  
Author(s):  
Sandi Aji ◽  
Afandi Afandi ◽  
Lestari Wibowo ◽  
K.E.S. Manik
Keyword(s):  
Physical Properties ◽  
High Hardness ◽  
Soil Physical Properties ◽  
Soil Sampling ◽  
Soil Science ◽  
Ananas Comosus ◽  
Survey Method ◽  
Soil Pests ◽  
Poor Soil ◽  
Properties Of Soil

This research was conducted in the planting area of pineapple (Ananas comosus) PT. GGP Terbanggi Besar Central Lampung indicated attacked by pests simphylid in March 2014 until May 2014. Analysis of soil physical properties carried out in the Laboratory of Soil Science, Department of Agrotechnology, Faculty of Agriculture, University of Lampung. The method used in this study is a survey method. Soil sampling conducted at three locations indicated simphylid pests. Soil sampling done at some point and some depth. Results from this research that pest symphilid most numerous in one location with a number of acquisition 172 tail where the location of the physical properties of good land which the density value of the content is low, the total pore low, macropores and high hardness low ground , allowing sinphylid be able to live and thrive. While at the location of two and three with the condition density value of the content is high, the total pore high, macropores low, and violence high soil pests simphylid not so much discovered as simphylid can not multiply and survive on the physical condition of poor soil Keywords: Pineapple, Symphilid, and physical properties of soil

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.

scholarly journals Changes in Soil Hydro-Physical Properties and SOM Due to Pine Afforestation and Grazing in Andean Environments Cannot Be Generalized

Forests ◽  
2018 ◽  
Vol 10 (1) ◽  
pp. 17 ◽  
Author(s):  
Franklin Marín ◽  
Carlos Dahik ◽  
Giovanny Mosquera ◽  
Jan Feyen ◽  
Pedro Cisneros ◽  
...  
Keyword(s):  
Land Use ◽  
Land Use Change ◽  
Physical Properties ◽  
Soil Properties ◽  
Water Retention ◽  
Soil Parameters ◽  
Water Retention Capacity ◽  
Sampling Depth ◽  
Site Specific ◽  
The Impact

Andean ecosystems provide important ecosystem services including streamflow regulation and carbon sequestration, services that are controlled by the water retention properties of the soils. Even though these soils have been historically altered by pine afforestation and grazing, little research has been dedicated to the assessment of such impacts at local or regional scales. To partially fill this knowledge gap, we present an evaluation of the impacts of pine plantations and grazing on the soil hydro-physical properties and soil organic matter (SOM) of high montane forests and páramo in southern Ecuador, at elevations varying between 2705 and 3766 m a.s.l. In total, seven study sites were selected and each one was parceled into undisturbed and altered plots with pine plantation and grazing. Soil properties were characterized at two depths, 0–10 and 10–25 cm, and differences in soil parameters between undisturbed and disturbed plots were analyzed versus factors such as ecosystem type, sampling depth, soil type, elevation, and past/present land management. The main soil properties affected by land use change are the saturated hydraulic conductivity (Ksat), the water retention capacity (pF 0 to 2.52), and SOM. The impacts of pine afforestation are dependent on sampling depth, ecosystem type, plantation characteristics, and previous land use, while the impacts of grazing are primarily dependent on sampling depth and land use management (grazing intensity and tilling activities). The site-specific nature of the found relations suggests that extension of findings in response to changes in land use in montane Andean ecosystems is risky; therefore, future evaluations of the impact of land use change on soil parameters should take into consideration that responses are or can be site specific.

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 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

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 Sustainable Agricultural Land Management in Garut Regency, West Java Province, Indonesia

2021 ◽  
Author(s):  
Lia Warlina ◽  
◽  
Syach Berriant Restu Pradana ◽  
Keyword(s):  
Land Use ◽  
Land Management ◽  
Rice Field ◽  
Agricultural Land ◽  
Land Conversion ◽  
Online Questionnaire ◽  
The Government ◽  
Agricultural Land Management ◽  
The Impact ◽  
Field Area

The high land conversion rate to other sectors has led the government to issue Law No. 41 in 2009 concerning Protection of Sustainable Agricultural Land (SAL). The study aims to identify the distribution of sustainable agricultural land uses and determine agricultural land-use changes from 2016 to 2019 and determine farmers' understanding of sustainable agricultural land control in the strategic area of Garut Regency. We overlaid the land use maps of Garut Regency in 2016 and 2019 and conducted a survey using an online questionnaire with a Google form. The research location is in five districts in Garut Regency. The results showed no land conversion in the area of existing sustainable agricultural land in Garut Regency. The total rice field area is 6,081 hectares, with about 24% is sustainable agricultural land. From 2016 to 2019, the rice field area decreased by 12 hectares. The farmers' awareness of SAL tends to be more likely aware of the sustainable agricultural land area, as many as 39% of farmers aware of sustainable agricultural land. The incentives given to farmers who control sustainable agricultural land are tax deduction, agricultural infrastructure supply, agricultural production facilities subsidies, and land certification facilities. The majority of the respondents are aware of these incentives. In conclusion, no sustainable agricultural land is converted, even though changes occur in non-sustainable agricultural land. The impact of this study is for recommendations to the government in sustainable agricultural land management.

Sign in / Sign up

Export Citation Format

Share Document