坡向和坡位对大兴安岭干旱阳坡蒙古栎林温湿度的影响  

Effect of Slope Aspect and Slope Position on Temperature and Humidity of the Arid Sunny-slope Mongolian Oak Forests in the Daxing'an Mountains

作　　者：丁永全 

机构地区：[1]东北林业大学,哈尔滨150040

出　　处：《东北林业大学学报》2015年第4期46-51,共6页Journal of Northeast Forestry University

基　　金：国家科技支撑计划项目(2011BAD08B02-02)

摘　　要：于2012年5月中旬至10月初,在大兴安岭干旱阳坡的蒙古栎林内,选择不同的坡向和坡位设置观测样地定点测定土壤温度、空气温湿度和土壤含水量。分析结果表明:不同坡向土壤温度由大到小为南坡、西南坡、东南坡,气温由大到小为西南坡、南坡、东南坡,空气湿度和土壤含水量由大到小均为东南坡、西南坡、南坡;南坡空气和土壤温度由大到小为坡上、坡下,土壤含水量坡下大于坡上含水量,空气湿度坡上大于坡下湿度;空气和土壤温湿度受空间位置和季节分布影响差异较大,不同坡向和坡位土壤温湿度差异明显,不同季节空气温湿度波动较大。For the characteristic of the arid sunny-slope Mongolian oak forests temperature and humidity in Daxing ＇an Mountains,we selected different slope aspect and slope position set observation sample plots and fixed point to measure soil temperature,air temperature,humidity and soil moisture from mid May to early October in 2012. The soil temperature of different slope aspect was in the descending order of southern slope,southwest slope and southeast slope,air temperature was in the descending order of southwest slope,south slope,and southeast slope,and air humidity and soil moisture content was in the descending order of southeast slope,southwest slope and south slope. The southern slope air and soil temperature were in the descending order of upper slope,lower slope,soil moisture was in the descending order of lower slope and upper slope,air humidity was in the descending order of upper slope and lower slope. Air and soil temperature and humidity were affected significantly by spatial distribution and seasonal differences,and soil temperature and humidity were with a clear difference in different slope direction and slope position with large fluctuation in different seasons.

关 键 词：大兴安岭 干旱阳坡 蒙古栎林 土壤温度 空气温湿度 

分 类 号：S792.186[农业科学—林木遗传育种]