红松阔叶混交林林隙浅层土壤温度的异质性  

Heterogeneity of shallow soil temperature in the forest gaps of Pinus koraiensis-dominated broadleaved mixed forest

作　　者：李猛[1,3] 刘洋[2] 段文标[3] 

机构地区：[1]中国科学院东北地理与农业生态研究所黑土区农业生态院重点实验室,海伦农田生态系统国家野外观测研究站,哈尔滨150081 [2]黑龙江龙煤矿业控股集团有限责任公司,哈尔滨150040 [3]东北林业大学林学院,哈尔滨150040

出　　处：《生态学杂志》2013年第2期319-324,共6页Chinese Journal of Ecology

基　　金：黑龙江省自然科学基金项目(C201231);国家自然科学基金项目(31270666);哈尔滨科技创新人才研究专项(RC2012LX002018)资助

摘　　要：以小兴安岭原始红松阔叶混交林林隙为研究对象,采用网格法布点,通过对生长季内林隙各样点浅层土壤温度的连续观测,利用经典统计学和地统计学的方法分析了林隙浅层土壤温度的时空异质性。结果表明:林隙浅层土壤温度不同空间样点之间存在异质性,而且异质性的强度、尺度和空间结构组成随时间而改变,浅层土壤各月平均温度斑块形状复杂,5cm土壤平均温度大小顺序均为7月>6月>8月>9月,20cm土壤平均温度大小顺序为7月>8月>6月>9月,浅层土壤月平均温度的最大值分布位置不固定,5和20cm土壤同一月份平均温度的大小顺序均是空旷地>林隙>郁闭林分。Taking the Pinus koraiensis-dominated broadleaved mixed lorest an Alaoxmg an Mountains of Northeast China as test object, and by using grid method, the measurement plots of forest gaps were established to continuously measure the shallow soil temperature, with its spatio- temporal heterogeneity in the gaps during growth season analyzed by the classic statistics and geostatistical methods. There existed heterogeneity in the shallow soil temperature among different measurement plots. The intensity and scale of the spatial heterogeneity changed with time, and the complex degree of the patch shapes of mean monthly shallow soil temperature also differed. The mean monthly temperature at 5 em soil depth was the highest in July, followed by in the se- quence of June, August, and September, whereas the mean monthly temperature at 20 cm soil depth was the highest in July, followed by in the sequence of August, ~une, and September. The mean monthly maximum shallow soil temperature was not fixed. In the same months, the mean temperature at 5 and 20 cm soil depth was the highest in bare ground, followed by in forest gap, and the lowest in understory.

关 键 词：红松阔叶混交林 林隙 浅层土壤温度 地统计学 

分 类 号：S714[农业科学—林学]