1.Research and determination were directed toward the biomass and productivity of arbor and shrub layers of an artificial spruce (Picea likiangensis var. balfauriana)forest aged 28 years and situated in an alpineforest area of western Sichuan with 2900 m ASL. Additionally,regression equations haye been established for estimating the biomass of all organs of a single tree of the arbor layer.
2.The damage caused by fir decay in alpine fir forest regions of western Sichuan has decreased the outturn rate of the stand and changed the structure of timber assortment.
3.The north slope on the east part of Qilian Mountains was separated into 6 vertical distribution zones: alpine cold desert meadow、alpine meadow、alpine bush meadow、mountain forest grassland、mountain grassland、and mountain desert grassland, there are also some areas of alternative distribution.
6.The paper researched the soil water effect across measuring the physical characters of soil water in Pailugou watershed in Qilian Mountains forest ecology monitoring station belonging to the state key field scientific experimental station. The result shows:(1)The water holding capacity of sub-alpine shrub meadow soil is best and aerate well and then forest gray-brown soil with best aeration, chestnut soil has little water holding capacity and bad aeration;
7.In sub-alpine dark coniferous ecosystem of upper reaches of Yangtze River, CWD can hold about 7.41mm precipitation under natural condition while 9.91mm under saturated condition, which is a great contribution to the hydrological function of whole forest ecosystem.
8.The warmth index (WI) and cold index (CI) of the upper limits of the evergreen broad-leaf forest, the coniferous and broad-leaf mixed forest, the montana dark coniferous forest, and the alpine shrub and meadow belt are 65℃ · month,43℃· month, 16℃· month and 10℃·month, and -10℃·month, -24℃· month,-55℃ month and -75℃· month respectively.
9.In the mountains of the Qaidam region there is great difference in thevertical belt spectrum of the vegetation between east and west: the verti-cal spectrum in the desert steppe zone is: mountainous steppe-mountaino-us evergreen needleaf forest-subalpine shrubland-alpine meadow-alpine spa-rse vegetation;
10.The moth diversity obviously decreases with increasing elevation, and the diversity index, species richness and individual number of Korean pine broad-leaved forest are the highest, and those of alpine zone are the lowest.
