炼山对杉木人工林生态系统影响的计量与评价

Estimation and Evaluation on Effect of Control Burning on Ecosystem of Chinese Fir Plantation

在炼山、不炼山径流场定位观测基础上，根据炼山对杉木人工林生态系统的影响程度，首次采用定量方法对不同林地清理方式杉木林的生产效益、涵养水源效益及保持水土效益进行研究的结果表明：不炼山杉木人工体综合效益比炼山杉木人工林高１３６５．７６元／ｈｍ２，炼山清理迹地弊大于利。

The benefits of products, water and soil conservation of Chinese fir plantation of different ground clearances were studied by quantitative method according to the effects of control burning and noburning on the ecosystem of Chinese fir plantation. The results showed that the comprehensive benefits of Chinese fir plantation with no-burning are higher than that with control burning by 13652. 76 yuan/hm2,therefore, control burning had more defects than its merits.