Study on Variation of Inside and Outside Temperatures of Typical Forest Stands in Hilly Area of South of Jiangsu Province
[Objective] In order to objectively reflect the regulation of the temperature inside and outside the forest,the characteristics of temperature change in different stands in this paper were explored.[Method] The forest temperatures of the Quercus carruth stand,Phyllostachys heterocycla stand,Cunninghamia lanceolata and Nudation (as a control) from January 2011 to January 2012 were monitored to analyze the changes in temperature inside and outside the forest in different periods of time.[Result]The daily variation of temperature inside the forest of spring,summer and autumn were larger than that of winter;The seasonal difference and the annual difference of temperature inside the forest of Quercus carruth stand,Phyllostachys heterocycla stand and Cunninghamia lanceolata stand were worse than that of Nudation.All stand types had the promotion effect of decreasing the temperature inside the forest in spring,summer and autumn,of which the effect of bamboo forest on decreasing the temperature inside the forest in spring and autumn was the best (3.3,3.8 ℃);The average annual temperature of the forest was effectively reduced in all stand typest and size of the annual average temperature inside each forest,which was in the order of Nudation ＞ Phyllostachys heterocycla stand ＞ Cunninghamia lanceolata ＞ Quercus carruth stand,among them,the promotion effect of decreasing the average annual temperature inside the forest of Quercus carruth stand was the best,which could reduce 0.5 ℃,but the effect of Phyllostachys heterocycla stand and Cunninghamia lanceolata stand were not significant,which decreased by 0.3 and 0.4 ℃,respectively.The forest had the effect of hysteresis in the occurrence of the highest temperature and the sub-low temperature inside the forest.The lagging effect of Quercus carruth forest was the best,which could lag 75 min,followed by Cunninghamia lanceolata stand and Phyllostachys heterocycla stand.The difference between the minimum and maximum values of moonly average temperature inside and outside the forest had a positive correlation with the coverage of the canopy.The function of forests could reduce the hightest temperature and raise the lowest temperature insde the forest and all stand typest ranking Cunninghamia lanceolata stand,Quercus carruth stand and Phyllostachys heterocycla stand.[Conclusion] The conclusion could be used as a basis for protection and stand selection in southern Jiangsu.
Forest temperatureNudation temperatureQuercus carruth standPhyllostachys heterocycla standCunninghamia lanceolata stand
NETL
NSTL
万方数据
维普
