Eastern South Asia region is bounded by Nepal, Sikkim, and Bhutan in the north, Bangladesh in the east, the Indian states of Uttar Pradesh and Chhattisgarh on the west, and the Indian state of Andhra Pradesh in the south. It is connected to the Seven Sister States of Northeast India by the narrow Siliguri Corridor. West Bengal is on the eastern bottleneck of India, stretching from the Himalayas in the north, to the Bay of Bengal in the south. The region lies in the humid-subtropical zone. The landlocked region of Northeast India includes the states of Assam, Arunachal Pradesh, Bihar, Mizoram, Manipur, Meghalaya,
Ecology of the Himalayas the Bhabhar, a zone of porous and rocky soils made up of debris washed down from the higher ranges. The belt lies at the foot of the Himalayas where the Himalayan streams descend on to the plains. The Bhabhar and the lower Shiwalik ranges have a subtropical climate. The Himalayan subtropical pine forests occupy the western end of the subtropical belt, with forests dominated by Chir Pine "(Pinus roxburghii)". The central part of the range is home to the Himalayan subtropical broadleaf forests, an ecoregion that has many different kids of forest. One kind of forest is dominated by the