Mass loss and element release of litter in the subalpine forest over one freeze-thaw season

To understand the effects of Fargesia nitida on forest cycle succession of subalpine forests in Wolong Nature Reserve, Sichuan Province, species diversity and tree regeneration with bamboo(B~+) and without bamboo(B~-) condition of three regeneration stages were investigated.

To understand the effects of seasonal freezing-thawing on the subalpine forest ecosystem processes,the microbial count and biomass in fir(Abies faxoniana) and birch(Betula platyphylla) litters under the condition of freezing-thawing were measured from October 2006 to April 2007 by litter bags method.

In this paper, in order to analyse the influences of forest management and topography factors on sub-alpine forest restoration in west Sichuan, Miyaluo was selected as a case study area.

Study on Identification of High Conservation Value Forest in Beijing Mountainous Region;

Focus on the features of high conservation value forest in combination with the evaluation of forest values in terms of existing economy theories,the paper evaluates the values of high conservation forest in Beijing from 2 aspects of biodiversity and ecological service function.

Beijing is the capital of China, the study on high conservation value forests in beijing is important to develop the forest certification, forest management, landscape planning, nature reserves planning.