scholarly journals Characterization and Classification of Soils of Jirang Block in Meghalaya Plateau

Agropedology ◽  
2019 ◽  
Vol 26 (1) ◽  
Author(s):  
R.K. Jena ◽  
◽  
V.P. Duraisami ◽  
R. Sivasamy ◽  
S. Shanmugasundaram ◽  
...  

The Meghalaya plateau occupying a major portion of entire state of Meghalaya remains as an important part of the ancient Deccan plateau. A detailed soil survey (1:10,000 scale) of the Jirang block of Ri-Bhoi district was carried out using IRS-P6 LISS IV and Cartosat-1 images. Typical pedons representing major landforms of the study area viz., denudational hills, plateau and inter hill valley plain developed from granite–gneiss occurring under varying land use were characterized, classified and assessed. The soils were deep to very deep, dark grayish brown to red in colour, extremely acid to moderately acid in reaction and high in organic carbon; the latter decreased with increase in depth. Soils on high denudational hills, highly dissected upper and lower plateau and lowly dissected lower plateau are highly weathered (kandic horizons) with base saturation <35% and are classified to Ultisols. Soils on low denudational hills are highly weathered Alfisols. Soils of moderately dissected lower plateau and those on upper valley region are both Alfisols, but the latter has lower base saturation than the former. The soils of the lower valley are Alfisols with an aquic moisture regime.

2019 ◽  
Vol 8 (2) ◽  
pp. 3753-3755

The district Gurugram in the state Haryana has seen significant extension & development during the last few years. In this paper, the change in land-use/cover has been estimated with time range of 2007 - 2017 and the change detection was quantified. The land-use/cover data generated through satellite imagery has been classified into five major classes i.e., (i) Built-up land (ii) Water Bodies (iii) Barren Land (iv) Agricultural Land (v) Vegetation. The investigation was helped out through Geoinformatics approach by using IRS-P6- LISS-III sensor of 2007 and IRS-P6-LISS-IV sensor of 2017. Observing of land-use/spread mirrored that changes were more noteworthy in degree over the time range of 10 years in the land under various classes. The most sensational changes are the increase in built-up land and barren land. Apart from this decrease in agricultural, water bodies and vegetation cover area also. Results demonstrates an expansive change in the territory of various land use classifications amid the period from 2007 to 2017.The agriculture land covering an area of about 55.27% in 2007 reduced to 43.42% in 2017. The built up area increased from 15.97 % in 2007 to 30.23 in 2017. The barren land area increased from 6.45 % in 2007 to 16.97 in 2017 The Water bodies decreased from 4.65 % in 2007 to 1.05 % in 2017. The vegetation area has also decreased from 17.66 % in 2007 to 8.33 % in 2017. Urban extension and various anthropogenic exercises have brought genuine misfortunes of agricultural land, vegetation and water bodies.


2021 ◽  
pp. 94-103
Author(s):  
R. Srinivasan ◽  
K. S. Anil Kumar ◽  
M. Chandrakala ◽  
K. V. Niranjana ◽  
N. Maddileti ◽  
...  

Six soil series representing major coconut growing soils of the Eastern Ghats in Krishnagiri district of Tamil Nadu State, India, were evolved from granite gneiss and alluvium parent materials. Characterization of different soil properties was done using a detailed soil survey at 1:10000 scale. The soils were neutral to moderately alkaline in reaction (7.31 to 9.19), non-saline, poor to moderately well-drained and moderately shallow (<75 cm) to very deep (>150 cm) in depth. The soils were sandy to clay in texture, sub-angular blocky to crumb in structure, dark reddish-brown to brown, very low to high in OC content (0.06 to 2.70%), low to medium in AWC (3.44 to 22.39%), low to high in CEC (4.70 to 54.0 cmol (p+) kg-1) and having high base saturation (77 to 100%). The soils also had sizable amounts of exchangeable sodium (4.29 to 33.46%), which was maximum in P5, P6 and P1, and high clay content in P5 and P2. The distribution of CaCO3 in different depths was found to be maximum in P4 and P1. The soil orders identified in the coconut area were Inceptisols, Entisols, Alfisols and Vertisols. Assessment of soil resources and identification of yield-limiting soils factors on coconut could be by way of better management and improved productivity.


2021 ◽  
pp. 23-29
Author(s):  
RAMESHWAR SINGH

The agro-eco-sub region (AESR) 4.2 encompasses Aravalli foot hills, central Rajasthan plains and adjoining areas. Visual interpretation of geo-coded satellite data (IRS-P6, LISS IV MX) on the same scale was done before starting the field work. Based on the interpretative units a high intensity detailed soil survey was carried out in cluster of ten villages of Bhadesar tehsil of Chittaurgarh district on cadastral map (1:4000 scale) and the soils were characterized with respect to landforms. In all, 14 soil series were established and assessed for soil site suitability for maize, wheat, mustard and soybean. Daulatpura-c series soils are suitable for maize, mustard, soybean, and Daulatpura-d soils for soybean and moderately suitable for other crops. Soils of Bagund and Narbadiya-a series are moderately suitable for maize and marginally suitable for other crops. The soils of Bhadsoda-b series are marginally suitable only for mustard but moderately suitable for all other crops. Soils of Parliya series are moderately suitable only for mustard crop and marginally suitable for remaining crops. The soils of Guda series are marginally suitable for maize, wheat, mustard but not suitable for soybean. The soils of Nardhari-a and Nardhari-b are moderately suitable, Daulatpura-b, Bhadsoda-a and Narbadiya-b are marginally suitable whereas soils of Madanpura and Daulatpura are not suitable for all the crops due to limitations of shallow soil depth.


Author(s):  
J. S. Bibby

AbstractThe Department of Agriculture and Fisheries for Scotland (DAFS) have a responsibility to comment on all proposed changes of use in agricultural land in Scotland, whether this be to urban and industrial use or to forestry. The Macaulay Institute for Soil Research, through its Department of Soil Survey, has mapped the soils of Scotland, demonstrating in the process very clear links between the underlying solid and drift geology, and soil development and land use. Two series of interpretative maps have been produced, one at 1:250 000 of the entire country and one at 1:50 000 of the arable lands. These incorporate both climatic and site factors with soil type to provide a classification of agricultural potential. This work will be implemented in Scotland by DAFS as part of their planning-related functions in 1987. This paper describes the links between geology and soil maps, and the approaches taken in both land classification compilation and application. In conclusion, the basis for land suitability maps for specific purposes, now being actively developed to provide further guidance for assessing the impact of land use change in Scotland, is described.


2016 ◽  
Vol 9 (6) ◽  
pp. 1712
Author(s):  
Lucas Emanuel Servidoni ◽  
Joaquim Ernesto Bernardes Ayer ◽  
Marx Leandro Naves Silva ◽  
Velibor Spalevic ◽  
Ronaldo Luiz Mincato

The increasing demand for food resulting from demographic growth has required more productive agropastoral practices. Consequently, new areas were selected for agropastoral production in an arbitrary way, disregarding land use capacity. This ends up in acceleration of degradation processes, mainly those related to water erosion. In this context, the system of land use capacity proposes the classification of maximum use allowed for land of a rural property or of a hydrographic sub-basin, in an attempt to make sustainable plans of use and management of natural resources. Concerning current use of land, the system indicates the sites where there are conflicts in use in relation to their use capacity. Thus, it is possible to propose measures to adapt land use to its use capacity. Therefore, in this study, the classes of land use capacity at the hydrographic sub-basin of Córrego Pedra Branca, in Alfenas, in the state of Minas Gerais, were evaluated. For that purpose, the following soil parameters were evaluated: effective depth, water permeability, texture, declivity, erosion class, base saturation, effective and potential cationic exchange capacity, and aluminum saturation. Soil analyses presented values of base saturation and of low capacity of effective and potential cationic exchange, which illustrate the low natural fertility of these soils, as well as aluminum saturation level harmful to most cultures. Thus, land use would be restricted to low impact, permanent crops, silvicultures, associated agrosilvipastoral system with conservationist management techniques, as, for example, direct seeding, soil correction and fertilization, and reforestation of permanent preservation areas


Agropedology ◽  
2019 ◽  
Vol 28 (2) ◽  
Author(s):  
Abhishek Jangir ◽  
◽  
R. P. Sharma ◽  
G. Tiwari ◽  
B. Dash ◽  
...  

A detailed soil survey was undertaken at 1:10000 scale to describe, characterize, classify and evaluate the soils of Bharuch taluka, Bharuch district, Gujarat. Old and recent basaltic alluvial plains are the major landforms of the area. A total of 74 pedons, representing old (41 pedons) and recent (33 pedons) alluvial plains were studied. The soils were correlated and three soil series viz. Umraj, Derol and Singdot were identified. The Umraj belong to a very fine, smectitic Typic Haplusterts covers 30,839 ha (48.5 %) area, whereas Derol and Singdot a fine, smectitic Vertic Haplustepts and fine, mixed, Typic Haplustepts covers 20,604 ha (32.5 %) and 4,164 ha (6.6 %) area, respectively. The sand, silt and clay in the soils varied from 8 to 31, 24 to 49 and 23 to 67 per cent, respectively. The soils were very deep, neutral to slightly alkaline (pH 7.3 to 8.4) with low to medium in organic carbon content (0.14 to 0.58 %), low to high in calcium carbonate (1.9 to 16.5 %) with medium to high CEC [39.4 to 62.0 cmol (p+) kg-1] and high base saturation (67.4 to 92.0 %). Soils were assessed as highly to moderately suitable for major crops (cotton, pigeonpea, maize, sugarcane, wheat and chickpea).


Author(s):  
V. Pandey ◽  
P. K. Srivastava

Change in soil moisture regime is highly relevant for agricultural drought, which can be best analyzed in terms of Soil Moisture Deficit Index (SMDI). A macroscale hydrological model Variable Infiltration Capacity (VIC) was used to simulate the hydro-climatological fluxes including evapotranspiration, runoff, and soil moisture storage to reconstruct the severity and duration of agricultural drought over semi-arid region of India. The simulations in VIC were performed at 0.25&amp;deg; spatial resolution by using a set of meteorological forcing data, soil parameters and Land Use Land Cover (LULC) and vegetation parameters. For calibration and validation, soil parameters obtained from National Bureau of Soil Survey and Land Use Planning (NBSSLUP) and ESA's Climate Change Initiative soil moisture (CCI-SM) data respectively. The analysis of results demonstrates that most of the study regions (>&amp;thinsp;80&amp;thinsp;%) especially for central northern part are affected by drought condition. The year 2001, 2002, 2007, 2008 and 2009 was highly affected by agricultural drought. Due to high average and maximum temperature, we observed higher soil evaporation that reduces the surface soil moisture significantly as well as the high topographic variations; coarse soil texture and moderate to high wind speed enhanced the drying upper soil moisture layer that incorporate higher negative SMDI over the study area. These findings can also facilitate the archetype in terms of daily time step data, lengths of the simulation period, various hydro-climatological outputs and use of reasonable hydrological model.


2019 ◽  
Vol 70 (3) ◽  
pp. 244-257 ◽  
Author(s):  
Cezary Kabała ◽  
Przemysław Charzyński ◽  
Szabolcs Czigány ◽  
Tibor J. Novák ◽  
Martin Saksa ◽  
...  

Abstract Chernozemic soils are distinguished based on the presence of thick, black or very dark, rich in humus, well-structural and base-saturated topsoil horizon, and the accumulation of secondary carbonates within soil profile. In Central Europe these soils occur in variable forms, respectively to climate gradients, position in the landscape, moisture regime, land use, and erosion/accumulation intensity. “Typical” chernozems, correlated with Calcic or Haplic Chernozems, are similarly positioned at basic classification level in the national soil classifications in Poland, Slovakia and Hungary, and in WRB. Chernozemic soils at various stages of their transformation are placed in Chernozems, Phaeozems or Kastanozems, supplied with respective qualifiers, e.g. Cambic, Luvic, Salic/Protosalic, Sodic/Protosodic etc. Some primeval Chernozems thinned by erosion may still fulfil criteria of Chernozems, but commonly are shifted to Calcisols. Soils upbuilt (aggraded) with colluvial additions may also retain their original placement in Chernozems, getting supplementary qualifier Colluvic. “Hydromorphic” chernozemic soils, in many CE systems are placed as separate soil type (“czarne ziemie” or “čiernice”) at the same level with “typical” chernozems. Classification of these soils in WRB depends on the presence of chernic horizon, depth of secondary carbonate accumulation and depth of gleyic/stagnic properties, and may vary from Gleyic/Stagnic Chernozems/Phaeozems to Mollic Gleysols/Stagnosols. Although WRB classification differs from national classifications in the concepts and priorities of classification, it provides large opportunity to reflect the spatial variability and various stages of transformation/degradation of chernozemic soils in Central Europe.


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