滇东南岩溶区4种松树的生长量比较研究

2001—2003年，在建水县半干旱暖热岩溶区具有代表性的石漠化和非石漠化2种立地类型上，采用云南松、湿地松、加勒比松和马尾松4个针叶树种造林，通过10余年的生长量观On,0，研究其对滇东南岩溶区的生长适应性。结果表明，4个树种对滇东南非石漠化土地和石漠化土地均有较强的适应性，其中以马尾松和湿地松的总体表现较优；云南松前3年生长较慢，其后生长加快，总体表现较好；加勒比松表现最差，不适宜滇东南半干旱暖热岩溶区作造林树种。

Comparison on Growth Increment of Four Pinus Species in Karst Area of Southeast Yunnan

From 2001 to 2003, at two kinds of sites namely stony desertification area and non-stony desertification area in Jianshui county of Yunnan province, four Pinus species including Pinus yunnanensis, P. elliottii, P. caribaca and P. massoniana were respectively planted. Based on the growth increment observation data, the growth adaptability of four Pinus species to karst area of southeast Yunnan was studied. The results indicated that all the four species showed promising adaptability to karst area of southeast Yunnan, especially P. massoniana and P. elliottii had satisfactory growing performance. P. yunnanensis was characterized by slow growth in the frst three years after fixed planting, followed by speed up of growth, and the growing performance was generally satisfactory. P. caribaca was the one with the worst growing among all the four Pinus species, and was not suitable to be the af- forestation tree species in semi-dry warm karst area of southeast Yunnan.