毛竹生境引入格氏栲对林分涵养水源功能的影响  

Effects of Introducing Castanopsis kawakamii into Moso Forests Habitat on Water Conservation Function of Stands

作　　者：沈彩霞 Shen Caixia(Service Station of Xinkou Castanopsis kawakamii Nature Reserve,Sanming 365000,Fujian,China)

机构地区：[1]福建省三明莘口格氏栲自然保护区服务站,福建三明365000

出　　处：《世界竹藤通讯》2021年第3期22-28,共7页World Bamboo and Rattan

基　　金：福建省地方标准项目“格氏栲培育技术规程”(闽市监标准[2020]217号);福建省林业科技项目“格氏栲苗木繁育及造林技术研究”(闽林科便函[2019]16号);三明市林业科技研究项目“格氏栲种群特征及人工林培育途径与生物生产力研究”(明科综[2019]7号)。

摘　　要：我国南方现有毛竹纯林的生态功能十分脆弱,为探索毛竹林定向改造及生态林重建途径,恢复与建立竹阔复层混交林,在毛竹纯林中栽植格氏栲,研究林分涵养水源功能的变化。结果表明:毛竹适宜的保留密度为2 400~3 600株/hm^(2),格氏栲栽植密度为900株/hm^(2);栽植格氏栲10 a后,竹阔混交林的土壤密度显著下降,土壤孔隙度和持水量大幅增加,土壤中水稳性团聚体含量增加,土壤渗透性能与抗蚀强度大幅提升,林分涵养水源功能明显增强。研究结果可为我国南方生态功能区毛竹纯林改造提供借鉴。The existing pure moso forests in the south of China is very fragile in ecological function.In order to explore the approach to directional transformation of moso forest and re-establishment of ecological forest,and restore&establish bamboo-broadleaved mixed forest,Castanopsis kawakamii is planted in pure moso forest to study the change in water conservation function of the mixed forest.The results show that:1)The suitable density is 2400-3600 plants/ha for bamboo and 900 plants/ha for C.kawakamii;2)After 10 years of C.kawakamii planting,the soil density of mixed forest drops significantly,the soil porosity and water holding capacity increase significantly,the content of water stable aggregates climb,the soil permeability and anti-erosion strength greatly increase,and the water conservation function of the stand is significantly enhanced.The results can provide references for the transformation of pure moso bamboo forests in the ecological function region of southern China.

关 键 词：毛竹 格氏栲 竹阔混交林 涵养水源功能 福建省三明市 

分 类 号：S715[农业科学—林学]