A study was conducted in different forests of districts of Rudraprayag and Pauri (Uttarakhand) in the Central Himalayas for determining the physical and chemical features of soil. The findings indicated that there was more accumulation of minerals in the undisturbed forests irrespective of disturbed forest type.
The decades-old pine trees are under threat, as Capital Development Authority (CDA) still lacks any equipment to relocate large trees, impeding the construction of Zero Point Interchange (ZPI).
Capital Development Authority (CDA) has relocated over 500 trees from the site of under-construction Zero Point Interchange (ZPI), said CDA Director General (DG), Environment, Dr Suleman Sheikh on Friday. He said the authority had made slight changes in design of the ZPI loops and slip roads to avoid further relocation of grownup trees falling in the work area.
An attempt has been made here to study the climatic influence on variation of tree-ring width (radial growth) of Blue Pine (Pinus wallichiana A.B. Jackson) growing in five different sites in and around Ziro Valley, Arunachal Pradesh, Northeast Himalaya. The site chronologies have been evaluated to assess inter-site differences through several statistical analyses, viz.
An attempt has been made to quantify the relative abundance and size distribution of oily-droplets in the ambient air of Shillong using an optical microscope. The sampling was carried out at controlled, moderate traffic, high traffic, traffic intersections, industrial estates and elevated specific locations in different seasons during 1998-2000.
Fifteen years ago the hillside of Karsog Tehsil in Mandi district of Himachal Pradesh was covered with pine mono cultures. The officials of the forest department preferred pine as it is not eaten by cattle, grows quickly after a fire, is hardy, requires minimum effort and had a good survival rate.
Climate envelope modelling is used to predict possible shifts in the distribution of Pinus kesiya and P. merkusii, which could have implications for the conservation and use of their genetic resources.
The mountain pine beetle (Dendroctonus ponderosae Hopkins, Coleoptera: Curculionidae, Scolytinae) is a native insect of the pine forests of western North America, and its populations periodically erupt into large-scale outbreaks. During outbreaks, the resulting widespread tree mortality reduces forest carbon uptake and increases future emissions from the decay of killed trees.
