Vol10 No.3: 464-471
【Title】Assessing Anthropogenic Pressure and Its Impact on Hippophae salicifolia Pockets in Central Himalaya, Uttarakhand
【Author】Deepak DHYANI*, Shalini DHYANI, RK MAIKHURI
【Addresses】G.B. Pant Institute of Himalayan Environment and Development, Garhwal Unit, Srinagar Garhwal, Uttarakhand, India
【Citation】Deepak DHYANI, Shalini DHYANI, RK MAIKHURI. Assessing Anthropogenic Pressure and Its Impact on Hippophae salicifoliaPockets in Central Himalaya, Uttarakhand. Journal Of Mountain Science 10(3):10(3):464–471. DOI: 10.1007/s11629-013-2424-z
【Abstract】Natural habitat of Hippophae salicifoliain Central Himalaya is continuously being degraded due to habitat destruction and harvesting. Although logging is prohibited, habitat destruction has increased because of regular road construction, repairing and broadening activities. In addition, Hippophaeresources are continuously being harvested by lopping (both partial and complete) for fuelwood, fodder and fruits in higher Himalayan region. This paper presents a detailed analysis of relationship between density, demographic structure, and harvesting of H. salicifoliagrowingpockets in the five major valleys (Gangotri, Yamunotri, Niti, Mana and Bhyundhar) of Uttarakhand in Central Himalaya, India. A total of 120 quadrats were laid randomly to study population structure, regeneration, sex ratio and lopping using quadrats of 100 m2 (24 in each valley) in Hippophae growing patches. Our study shows that the density, size distribution, and regeneration of Hippophae vary considerably among the major valleys. Trees in the Yamunotri valley have the highest density of large trees but the lowest density of seedlings. In contrast, there are few large trees but many seedlings in the Mana valley.The number and size of lopped trees also varied among the valleys. Lopping was greatest in Bhyundhar (11.4%) and Yamunotri (19.7%) and least in Niti (3.9%). The size of lopped trees differed substantially as well. In Bhyundhar, the largest trees were taken while saplings were taken in Yamunotri. Our study revealed that unsustainable harvesting from plants for fuel, fencing and fruits along with road broadening activities in Central Himalaya are the main cause of habitat destruction. Our research highlights the urgent need forin-situand ex-situ conservation of Hippophae salicifolia so that it’s potential can be harnessed sustainably by rural hill societies for their socio-economic development.
【Keywords】Central Himalaya;Seabuckthorn;Dioecious; Disturbance;Habitat Conservation