杉木火力楠混交林林内火环境的初步研究

采用常规方法,分别于1987.9.24和1988.9.24两次对福建省尤溪县林业科学研究所西坑试验点6年生杉木火力楠混交林的火环境进行定位观测,结果表明:混交林的日均相对湿度、凋落叶的含水量、土层0～40cm土壤含水量分别比杉木纯林高3％、22.27％和4.41％,混交林内日均光照强度仅为杉木纯林的55％,林内日均气温比杉木纯林低0.5℃。因此,杉木火力楠混交林在一定程度上降低了林分的燃烧性。

A Preliminary Study on the Fire Environment of the Mixed Stand ( Cunninghamia lanceolata, Michelia macclurei )

Using conventional way, the fire environment of mixed forests ( Cuning hamia lanceslata, Michelia macclurei ) in six years was studied in 24 sept. 1987, 24 sept, 1988 throught the fixed position. The results from the analysis showed that day-average light intense within mixed forests were 55°/that of ch-inese fir, day-average temperatures was 0. 5℃low that of chinese fir, day-average ralative humidity, water contentof litter and 0-40cm of soil within mixed forests were3%、 22.7%、 4.41% as large as that of chinese fir.The mixed fo-ests could decreast forest combustibility.