explain the physical and human factors responsible for land degradation?
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There are several physical factors contributing to soil degradation distinguished by the manners in which they change the natural composition and structure of the soil. Rainfall, surface runoff, floods, wind erosion, tillage, and mass movements result in the loss of fertile top spoil thereby declining soil quality.
Biological factors refer to the human and plant activities that tend to reduce the quality of soil. Some bacteria and fungi overgrowth in an area can highly impact the microbial activity of the soil through bio-chemical reactions, which reduces crop yield and the suitability of soil productivity capacity. Human activities such as poor farming practices may also deplete soil nutrients thus diminishing soil fertility. The biological factors affect mainly lessens the microbial activity of the soil.
Biological factors refer to the human and plant activities that tend to reduce the quality of soil. Some bacteria and fungi overgrowth in an area can highly impact the microbial activity of the soil through bio-chemical reactions, which reduces crop yield and the suitability of soil productivity capacity. Human activities such as poor farming practices may also deplete soil nutrients thus diminishing soil fertility. The biological factors affect mainly lessens the microbial activity of the soil.
okaps:
(i) Golden Quadrilateral Super Highways This super highway links India’s four largest metropolitan cities, i.e. Delhi-Kolkata-Chennai-Mumbai. North-South and East-West corridor are part of this. These highways reduce time and distance between mega cities.
(ii) National Highways These are primary road systems that link important parts of the country.
(iii) State Highways These roads link a state capital with its district headquaters. These are constructed by State Public Works Department.
(iv) District Roads These roads connect the district headquaters with other places of the district.
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(v) Rural Roads These roads also known as other roads, link rural areas and village with towns.
(vi) Border Roads These roads are constructed along the international border of India by Border Road Organisation. It has improved accessibility in areas of difficult terrain
These are the six types of roads in India
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