【摘要】 在单木液流测定的基础上,采用边材面积作为纯量,对塔里木盆地防风固沙的主要树种胡杨进行由单木到林分耗水的推算。结果表明:胡杨边材面积与胸径之间存在较高的相关性,通过实测标准地的胸径分布,可推算出林地边材面积分布,进而可利用热脉冲技术测定单木液流通量,推算林分的实际耗水量。更多还原

【Abstract】 Based on measurement of sap flow of individual Populus euphratica that mainly used for stabilizing sand and wind control in the Tarim Basin, its water consumption from individual to forest is estimated by using area of sapwood as net value. The result shows that sapwood area is closely linked with breast diameter. According to on-site measured distribution of breast diameter, the distribution of sapwood area can be predicted. The actual water consumption of forest can be then predicted through determining stem sap flux by heat pulse method.更多还原