田晓凤

摘要 通过野外调查和试验测定，分析了杉木×火力楠混交林、杉木×米老排混交林及杉木純林林冠层、林下植被层、凋落物层和土壤层的水源涵养能力的差异。研究结果表明：（1）林冠层最大持水量杉木×火力楠混交林最大持水量>杉木纯林最大持水量>杉木×米老排混交林最大持水量；（2）杉木×火力楠混交林草本层生物量、自然持水量及最大持水量均大于灌木层；（3）凋落物层最大持水量表现为杉木×米老排混交林最大持水量>杉木×火力楠混交林最大持水量>杉木纯林最大持水量；（4）0～60 cm土壤总贮水量从大到小表现为杉木×火力楠混交林、杉木×米老排混交林、杉木纯林。综合水源涵养能力大小依次为杉木×火力楠混交林、杉木×米老排混交林、杉木纯林。

关键词 杉木纯林；杉木×火力楠混交林；杉木×米老排混交林；水源涵养

中图分类号 S714 文献标识码 A 文章编号 0517-6611（2015）15-370-03

Effect of Different Forest Regeneration Modes on Forest Water Conservation Capacity

TIAN Xiaofeng

（Forestry Station of Xicheng， Youxi， Fujian 365100）

Abstract Through field investigation and experimental determination， the differences of canopy layer， shrub layer， herb layer， litter layer and soil layer water conservation capacity of Cunninghamia lanceolata and Michelia macclurei mixed forest， C. lanceolata and Mytilaria laosensis mixed forest and Chinese fir pure forest were studied in this paper. The results showed that： （1） the maximum water conservation capacity of forest canopy were showed C. lanceolata and M. macclurei mixed forest > Chinese fir pure forest > C. lanceolata and M. laosensis mixed forest； （2） biomass，natural water conservation capacity and the maximum water conservation capacity of Cunninghamia lanceolata and Michelia macclurei mixed forest in herb layer were higher than shrub layer； （3） maximum water holding capacity of the litter layer were showed C. lanceolata and M. laosensis mixed forest> C. lanceolata and M. macclurei mixed forest > Chinese fir pure forest； （4） 0-60 cm soil layer reservoir capacity were showed C. lanceolata and M. macclurei mixed forest > C. lanceolata and M. laosensis mixed forest > Chinese fir pure forest； In conclusion， water conservation capacity of different type forests were showed C. lanceolata and M. macclurei mixed forest > C. lanceolata and M. laosensis mixed forest > Chinese fir pure forest.

Key words Chinese fir pure forest； Cunninghamia lanceolata and Michelia macclurei mixed forest； Cunninghamia lanceolata and Mytilaria laosensis mixed forest； Water conservation

森林是地球陆地较为重要的生态系统，其生态服务功能对于缓解全球气候变暖以及改善全球生态环境均具有重要的意义。不同的林分类型，由于树种生物学特性和林分结构不同，林分的乔木层物种、林下植被层物种、凋落物的组成以及林下土壤容重和孔隙度等物理性质均存在较大差异，从而造成不同林分类型土壤层水源涵养能力也存在较大差异[1-3]。杉木[Cunninghamia lanceolata（Lamb.）Hook]是我国南方最重要的用材树种，栽培面积广布南方16省（区）。提高杉木人工林水源涵养能力，这对改善我国南方生态环境有着重要的作用。鉴于此，该文以杉木×火力……