• Vidit Tyagi

Abstract. Vegetation in mountain area in affected by several factors of which altitude, aspect, slope is predominant as they modify regimes of moisture and exposure to sun. The study site was located between 29º19 and 29º24 lat. N and 79º19 and 79º26 long. E along an elevational transect of 1200-2000 m in Central Himalaya. The study revealed that difference between hill base sites and other slope positions was greater than between two aspects. Aspects play a significant role in determining vegetation, and often even growth forms differ from one aspect to another. The study shows that the hill base and mesic aspect supports more species than higher slope positions and xeric aspect, respectively. Across the forests, species diversity ranged from 2.51 to 2.98. Species richness and diversity were generally higher in banj-oak forest, compared to kharsu-oak forest.

Keywords. mesic aspect, species composition, species diversity, species richness, xeric aspect

"SPECIES COMPOSITION AND DIVERSITY OF HERBACEOUS VEGETATION IN TWO MAJOR OAK FORESTS OF CENTRAL HIMALAYA: AN EFFECT OF ASPECT AND SLOPE", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 6, page no.655-664, June 2019, Available :http://www.jetir.org/papers/JETIR1907L01.pdf

"SPECIES COMPOSITION AND DIVERSITY OF HERBACEOUS VEGETATION IN TWO MAJOR OAK FORESTS OF CENTRAL HIMALAYA: AN EFFECT OF ASPECT AND SLOPE", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 6, page no. pp655-664, June 2019, Available at : http://www.jetir.org/papers/JETIR1907L01.pdf