Prospects and problems in the soil of Arunachal Pradesh
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Arunachal Pradesh is one of the largest mountainous state of India, which is situated in the north-eastern part of the Himalayan region. The state is characterized by high annual rainfall, forest vegetation, diversity in soils, and haphazardous hills. The National Bureau of Soil Survey and Land Use Planning (NBSS & LUP) classified the state into four distinct zones. These zones include snow-capped mountains (5500 m AMSL); lower Himalayan ranges (3500 m AMSL); the sub-Himalayan Siwalik hills(700 m AMSL); and the eastern Assam plains (Maji et al., 2001).The wide and narrow valleys exist in between these hills along with several rivers and streams results in geographical isolation of many human-inhabited areas. As these down flowing rivers and streams deposit different kinds of organic matter at various places of the foothills, it is difficult to generalize soil types. Broad nomenclature like soils of hills, valleys, mid-hills, and foothills are exists.