西双版纳几种人工林地力恢复趋势研究

Study of Land Capacity Recovery of Six Kinds of Plantations in Xishuangbanna

经对云南西双版纳营造的山桂花、西南桦、马尖相思、高阿丁枫 4个树种的人工纯林及混交林的分析研究 ,结果表明 :只要经营得当 ,对林地土壤理化性质 ,并不造成重大影响 ,不会引起地力迅速衰退。 4树种人工林地力的变化趋势大致是 :1993～ 1995年大多略呈下降趋势 ,1995～ 1997年有所上升。

The land capacity change tendency of six kinds of plantations in Xishuangbanna four species, namely Paramichelia baillonii, Betula alnoides, Acacia mangium and Altingia excelsa involved in was studied. The study results indicated that the cultivation of the pure forests of these four species and two kinds of mixed forests might not cause obvious land capacity decline as long as proper management measures were adopted. The land capacity of these six plantations showed the tendency of decline from 1993 to 1995, while showed somewhat increase from 1995 to 1997.