摘要
通过野外调查和试验测定,对木荷、杉木混交林和纯林水源涵养能力进行研究。结果表明:木荷、杉木混交林地上部持水量、土壤层持水量、林分总持水量均比纯林大,均表现为木荷×杉木(6∶4)>木荷×杉木(4∶6)>木荷纯林>杉木纯林;各林分不同层次持水量为土壤层>林冠层>枯落物层>林下植被层,林分总持水量主要集中在土壤层,0～100 cm土层持水量占林分总持水量的99%以上,不同林分土壤层持水量差异主要在0～40 cm,60～100 cm土壤层持水量差异较小。混交林水源涵养功能大于纯林。
The water conservation capacity of pure stands and mixed plantation composed of Schima superba and Cunninghamia lanceolata was studied by field investigation and plot experiment. The results showed that the aboveground water holding capacity, the soil water holding capacity, and the total water holding capacity of the mixed stands was respectively larger than that of the pure stands of the two tree species, and the three types of wa- ter-holding capacity was ordered as the mixed stand of Sehima superba × Cunninghamia lanceolata （the proportion of the two species as 6： 4） 〉 the mixed stand（4： 6） 〉 the pure stand of Schima superba 〉 the pure stand of Cun- nirtghamia lartceolata. The water holding capacity of different layers of the stands was in the following order as soil layer 〉 canopy layer 〉 litter layer 〉 groundcover layer. The total water holding capacity of the stands was mainly contained in the soil layer, and the water holding capacity in the 0 - 100 cm soil layer accounted for 99% of the to- tal stand water holding capacity. There was significant difference in 0 -40 cm soil water-holding capacity among the different stand types, there was less difference in water holding capacity at 60 - 100 cm soil depth among different stand types. The study indicated that the water conservation function of the mixed stands was larger than that of the pure stands.
出处
《西南林业大学学报（自然科学）》
CAS
2012年第6期13-18,共6页
Journal of Southwest Forestry University：Natural Sciences
基金
福建省科技厅重点项目(2007N1006)资助
福建省高校专项(2008F5012)资助
福建农林大学校级项目(KY0180014)资助
关键词
木荷
杉木
水源涵养
持水量
混交林
Schima superba
Cunninghamia lanceolata
water conservation
water-holding capacity
mixed forest
