摘要
通过对杉木福建柏混交林中单株生物量组成、土壤团粒组成、土壤孔隙和水分状况的研究分析, 结果表明: 混交林中杉木每hm 2 蓄积量是杉木纯林的169 倍, 细根量是杉木纯林的15 倍; 与纯林相比, 混交林中0~20cm 土层> 025m m 水稳性团聚体高出901% ; 结构体破坏率低1582% ; 有机质和水解性 N 含量分别高0245% 和131×10- 6; 毛管孔隙、非毛管孔隙、总孔隙高009% 、091% 、100% , 土壤容重低0057gcm - 3; 最大持水量、最小持水量、毛管持水量分别高300% 、350% 、204% ; 混交林40cm 土层含水量也比纯林大155t·hm - 2。由于混交林的结构较为合理,能一定程度改善土壤理化性质、提高林分生产力,是一种值得推广的造林模式。
The results indicate that the stocking of Cunninghamia lanceolata per hm 2 in the mixed forest is 1 69 times as much as that of pure C.lanceolata forest per hm 2.The structure of the mixed forest is relatively rational and the mixed forest can improve the soil physical and chemical properties to a certain degree and can raise the stand productivity.Therefore the mixed forest is a planting pattern which is worth popularizing.
出处
《福建林业科技》
北大核心
1999年第3期33-37,共5页
Journal of Fujian Forestry Science and Technology
关键词
杉木
福建柏
混交林
效益
Cunninghamia lanceolata
Fokienia hodginsii
Mixed forest
Benefit