一、九里岗试验小区 我们于1977年开始在九里岗进行了小区径流试验观测工作。到目前共积累了五年实测资料(其中1978年未产流)。试验共分三个不同小区在九里岗北阴坡依次排列。各试验区的基本情况是:一号小区面积713.6米~2,海拔高132米至143米,1964年栽马尾松、刺槐、黄楝头、紫穗槐,与山茅草组成乔灌草多层次混交林;二号小区面积828.3米~2,海 First, Jiuligang experimental plot We started in 1977 in Jiuligang plot runoff test observations. So far accumulated a total of five years of measured data (of which 1978 did not runoff). The experiment is divided into three different quarters in Jiuli Kong northern shady slope in turn arranged. The basic situation of each experimental area is: No. 1 plot area of ​​713.6 m ~ 2, 132 meters above sea level to 143 meters, 1964 planted Masson pine, black locust, azadirachta indica, Amomum grass composed of multi-level Mixed forest; on the 2nd district area of ​​828.3 m ~ 2, sea