<正>对人T-林杨树木材I-69杨（Populus deltoides CV. I-69/ s5）的材色指标进行了系统的测试。结果表明：I一69杨人工林木材材色指标，即CIE表色系统中明度L*、色品指数a*、色品指数b*和孟塞尔表色系统中明度V、色调值H，在各表色系中均有一定的分布范围。对上述材色参数进行相关性分析,-j-以发现。材色参数之间存在一定的相关性，表明了木材材色参数独有的特点。

According to reflected characteristic of sprouting quantity, average height and diameter to disturbance intensity and frequency, three different disturbance types of strong, middle and poor grade Broussonetia papyrifera sprouting population were compartmentalized. By samples, study on biomass construction of B. papyrifera’s sprouting population with different age in the Karst region and set up biomass model by relative growth under different disturbed degree. By this model, the author researched the biomass construction and distribution of sprouting population under three different disturbed degree, and estimated biomass of B. papyrifera population in the community. The results showed that the disturbance is the main factor to influence the producing of spouting, the biomass construction and allocation of sprouting population is different because of the disturbed degree. The disturbed degree showed strong disturbance>middle disturbance>poor disturbance