Study On Microclimatic Characters Of Picea Shrenkiana Var. Tianshanica Forest In The Middle Location Of Tianshan Mountain

To reflect objectively the microclimate enviorenment influence that brought by the forest ecosystem, develop the function of the forest improving environment, strengthen people′s consciousness to protect and make use of the forest resources with reasonable, my research selects 3 prognosticates points at Tianshan Mountain ecosystem station, from May to September of 2006, adopts the trial method of fixed position prognosticate to the microclimate inside and outside of the forest, centers on the microclimate features through the survy of the atmosphere temperature, radiate, soil temperature, atmosphere humidity, light strength , evaporate, wind speed etc. The characters of forest microlimate about Picea shrenkiana Var. tianshanica are:1.The atmosphere temperature inside of the forest is lower than outside, the temperature day range inside of the forest is lower than outside ,in July the temperature and the temperature rang inside and outside of the forest is biggest.Along with the up of the elevation height, the temperature contains descendent trend.2.The total radiation strength inside of the forest is lower than outside obviously, radiate strength is the biggest in July, and the rang of radiation strength is also biggest.Along with the up of the elevation height, the radiation strength contains increaseing trend.3.In different depths ,the soil temperature inside of the forest is lower than outside, and with the higher of the soil temperature ,the temperature rang in and outside of the forest is bigger.The day change of soil surface temperature is obvious, having an obvious apogee, but the soil temperature of other depths, particularly the deep soil,temperature variety is not obvious. The day rang of soil surface temperature inside of the forst is lower than outside obviously,and in July the soil surface temperature rang between inside and outside of the forest is biggest. Along with the up of the elevation height,the soil temperature of different depths contains descendent trend with different degrees .4.The atmosphere humidity inside of the forest is higher than outside, and in July the difference between the two is the most obvious. The day change regulation is the same in and outside of the forest,in morning and light the humidity is higher than noon, at 14:00 the humidity attains the minimum value.Along with the up of the elevation height, the air humidity presents the increaseing trend.5.The light strength inside of the forest is lower than outside obviously. The day range inside of the forest is smaller than outside,and the light variety is more even slow.Along with the up of the elevation height, the light strength value presents a trend of increaseing.6.The evaporate inside of the forest is smaller than outside, as well as the month changes range.Along with the elevation height of going up, the evaporate quantity presents a trend of increaseing.7.The wind speed inside of the forest is smaller than outside, the direction of wind is subjected to the geography influence greatly, and more fixedly.Along with the up of the elevation height, the wind speed totally presents the trend of increaseing.