摘要
以长白山区云冷杉针阔混交林3个不同大小的林隙(456.2、290.2、83.9 m2)为研究对象,在林隙内按照不等距分布设置气温和土壤温度观测点,对8月份林隙内不同观测点气温和土壤温度的连续观测数据进行了分析,探讨了3个林隙内温度的时空变化特征。结果表明:林隙中央位置的气温和土壤温度的日变化均呈单峰型,温度在S—N方向的变化幅度大于E—W方向;林隙内最高温度出现的时间不同,林隙1、林隙2的气温和土壤温度最高值出现在13:00—15:00时间段,林隙3气温和土壤温度的最高值分别出现在11:00—13:00和7:00—11:00时间段;林隙内最高温度出现在不同位置,林隙1、林隙2的气温和土壤温度的最高值分别出现在中央偏东北和林隙中央,林隙3则出现在中央和中央偏东北;林隙内温度高于非林隙内的温度,差异比较明显(p<0.05)。
Observation points for air and soil temperatures were set in three gaps of different sizes （456.2, 290.2, 83.9 m^2 , denoted by gap 1, gap 2 and gap 3） in spruce-fir mixed forests in Changbai Mountains in unequal distance. Temporal and spatial variations of temperature in different gaps were analyzed by means of the continuous observation data of air and soil temperatures from different observation points. Results indicated that the daily change in both air and soil temperatures in the center of the gaps could be described by a unimodal curve. The change in temperature in S-N direction was larger than that in E-W Direction. The maximum temperatures occurred at different time in the gaps. The highest air and soil temperatures were at northeast sites near the center in gap 1 and the center in gap 2, and their appearance time was 13：00-15：00. However, the highest air and soil temperatures were at the center and northeast sites near the center for gap 3, and they occurred at 11：00-13：00 and 7：00-11：00 respectively. There was a significant difference in temperature between gaps and non-gaps （p〈0.05）.
出处
《东北林业大学学报》
CAS
CSCD
北大核心
2011年第9期71-74,共4页
Journal of Northeast Forestry University
基金
国家林业公益性行业科研专项课题(200804027)
关键词
空气温度
土壤温度
林隙
云冷杉林
长白山
Air temperature
Soil temperature
Forest gaps
Spruce-fir forests
Changbai mountains
