The subclasses indicate which soil indicators are limiting factors. For example, a soil with a 2-e erosion LCC can be used for agriculture but may be at risk for erosion. It may be a good idea to consider adopting conservation practices to limit soil erosion. Soils may also be limited by more than one factor. A 6-sd soil depth , w-f flooding soil is both not very deep and has frequent flooding that is not ideal for agricultural use.
See the tables below for a complete list of all classes and subclasses. For example, if your soil is limited by flooding during the growing season, but you are planning on growing rice, you can elect to turn off the flooding w-f indicator, and your classification will be recalibrated without this subclass.
You can also use this function to run scenarios about the potential of your soil if you were to mitigate against particular soil risk factors.
For example, if erosion is a risk factor for soil based on the slope, you may consider terraces or other structures to reduce this risk. Turn off the erosion indicator e to view a recalibrated LCC if you are controlling for erosion risks. If you have a high water table but you installed tile drainage, you could turn off the high water table indicator w-d to recalibrate your LCC. Jun Aid. Rohan Yadav.
Darshan Prajapati. Pavy Annadurai. Rohit Sinha. Aashu Rajput. Show More. Views Total views. Actions Shares. No notes for slide. Land capability classification 1. Soil is dynamic, three dimensional having length, breadth and depth piece of landscape with a three phase solid, liquid and gaseous system.
Land is the solid part of the earth's surface. Our land is home to many unique plants and animals. The term 'land' includes all physical elements in the wealth of a nation bestowed by nature; such as climate, environment, fields, forests, minerals, mountains, lakes, streams, seas, and animals.
To use our land wisely we have to understand soil. A landscape includes the physical elements of geophysically defined landforms such as ice-capped mountains, hills, water bodies such as rivers, lakes, ponds and the sea, living elements of land cover including indigenous vegetation, human elements including different forms of land use, buildings, and structures, and transitory elements such as lighting and weather conditions.
Combining both their physical origins and the cultural overlay of human presence, often created over millennia, landscapes reflect a living synthesis of people and place that is vital to local and national identity. Capability Vs Suitability Capability:- Capability is viewed by some as the inherent capacity of land to perform at a given level for a general use.
It helps to organize significant soil factors for conservation Stallings J. H, According to Kalmalkar, R. As a result, these soils are subject to severe permanent hazards. They are fair to poor for grazing or forestry. These soils are steep, eroded, shallow or swampy and are completely unsuitable for cultivation. Strict management should be applied to these soils. These occur in those parts which have no direct potential for exploitation for living.
These soils can serve the purposes of preserving some rare species or acting as a water catchment zone. Soils of this class are extremely rough, arid or swampy and are unsuitable for cultivation.
They are not suited for forestry or grazing. They may be used for wildlife sanctuaries, recreation or watershed uses. These are subdivisions of capability classes, made on the basis of four dominating limitations, namely, i risk of erosion e , ii wetness, drainage or overflow w , iii rooting zone limitations s , and iv climatic limitations c. The sub-classes are mapped by adding the limitation symbol to the capability class number, e.
There are no sub-classes in Class I. The land capability classification determines the use ceiling for any piece of land and helps to define the conservation problems and possible treatments.
Keeping this in mind, a piece of land can be put to the most efficient landuse. For instance, all agricultural activity must be confined to classes I to IV and others, such as pasturelands, energy plantation, buildings, roads, etc.
Within this scheme, one can select the most suitable crop for a particular piece of land. Class 2 soils have moderate limitations that reduce the choice of plants or require moderate conservation practices. Class 3 soils have severe limitations that reduce the choice of plants or require special conservation practices, or both. Class 4 soils have very severe limitations that restrict the choice of plants or require very careful management, or both.
Class 5 soils have little or no hazard of erosion but have other limitations, impractical to remove, that limit their use mainly to pasture, range, forestland, or wildlife food and cover.
Class 6 soils have severe limitations that make them generally unsuited to cultivation and that limit their use mainly to pasture, range, forestland, or wildlife food and cover.
Class 7 soils have very severe limitations that make them unsuited to cultivation and that restrict their use mainly to grazing, forestland, or wildlife. Class 8 soils and miscellaneous areas have limitations that preclude their use for commercial plant production and limit their use to recreation, wildlife, or water supply or for esthetic purposes. Capability subclass is the second category in the land capability classification system. Class codes e, w, s, and c are used for land capability subclasses.
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