摘要
研究了严重侵蚀红壤采取人工施肥、补植与封山育林相结合进行治理 (称封禁管理 )的马尾松群落的生物量和生产力。结果表明 :封禁管理的马尾松平均木生物量是对照的40 0倍 ,乔木层和林下植被层生物量分别为 61 1 1 7t·hm- 2 和 1 5 98t·hm- 2 ,是对照的 1 2 8 4倍和 4 4倍 ,封禁管理群落的年净生长量是对照的 2 8 7倍 ,乔木层的净生长量是对照的1 0 5 2倍 ,林下植被的是对照的 3 0倍。治理后林地出现苔藓层 ,生物量为 0 883t·hm- 2 。因此 ,严重侵蚀红壤封禁管理后植被生物量的恢复演替速度较快 ,生产力较高。表 4参 1
The biomass and productivity of Pinus massoniana community by closing of hillsides and management to facilitate afforestation were studied in subtropical granite red soil seriously eroded area.The results showed that after closing of hillsides and management to facilitate afforestation,the biomass of Pinus massoniana average trees was 40 0 times as high as control,the order of biomass was trunk>branch>root>leaf>bark,but the controls biomass order was leaf>trunk>branch>root>bark.The biomass of tree stratum and undergrowth were 61 117 t·hm -2 and 1 598 t·hm -2 ,they were 128 4 times and 4 4 times as high as control;the bryophyte emerged in the forestry land and its biomass was 0 883 t·hm -2 .The mean annual net increment of Pinus massoniana community were 28 7 times as high as control,tree stratum were 105 2 times and undergrowth were 3 0 times.After closing of hillsides and management to facilitate afforestation the ratio of the biomass restoring and productivity were higher than control in the seriously eroded area,this measure was worth using and spreading.
出处
《浙江林学院学报》
CAS
CSCD
北大核心
2001年第4期354-358,共5页
Journal of Zhejiang Forestry College
关键词
土壤侵蚀
马尾松群落
生物量
生产力
封禁管理
生态重建
水土保持
soil erosion
Pinus massoniana
fertilizing
closed forests
artificial forcing regeneration
biomass
productivity
