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贵州天保工程区主要针叶林的土壤肥力及蓄水力 被引量:3

Soil Fertility and Water Conservation Capacity of Main Coniferous Forests in Natural Forest Protection Area in Guizhou
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摘要 为了探明不同针叶林地土壤肥力和涵养水源功能的关系,进而为合理利用林地土壤,防止地力衰退,保护和培育森林资源,提升森林生态效益提供理论依据,在贵州省天保工程区内,根据不同的树种、立地类型,选择具有代表性的杉木、马尾松和华山松等9种针叶林进行植被、土壤、枯落物调查,分析各种林分的土壤pH值、土壤肥力、土壤持水量和枯落物贮水量。结果表明:1)砂页岩发育的土壤生长的林分土壤肥力综合状况为柳杉>华山松>杉木>云南松>马尾松>湿地松,土壤持水量大小依次为杉木>云南松>柳杉>马尾松>湿地松>华山松。2)石灰岩发育的土壤生长的林分土壤肥力综合状况为侧柏>柏木>滇柏,土壤持水量大小依次为滇柏>柏木>侧柏。3)枯落物贮水量大小依次是湿地松>杉木>马尾松>云南松>华山松>柏木。4)不同类型不同土壤层肥力A层土壤肥力大于B层。5)土壤层持水量与土壤非毛管孔隙度及土壤层厚度有密切关系,土壤非毛管孔隙度愈大,土壤层愈,厚土壤持水量愈大。 The vegetation,soil pH,soil fertility,soil water-holding capacity and litter water-storage capacity of nine different representative coniferous forests in Guizhou Natural Forest Protection Area according to different tree species and site type were analyzed to probe the relationship between soil fertility and water-holding capacity and to provide the theoretical basis for rational utilization of wood soil,prevention of soil fertility,protection and cultivation of forest sources and increase of forest ecological benefit.The results showed that: 1) the stand soil fertility of the soil developed from shale was Cryptomeria fortunei Pinus armandiCunninghamia lanceolataPinus yunnanensisPinus massonianaPinus elliottii and the soil water-holding capacity was Cunninghamia lanceolataPinus yunnanensisCryptomeria fortuneiPinus massonianaPinus elliottiiPinus armandi;2) the stand soil fertility of the soil developed from limestone was Platycladus orientalisCupressus funebrisCupressus torulosa and the soil water-holding capacity was Cupressus torulosaCupressus funebrisPlatycladus orientalis;3) the litter water-storage capacity was Pinus elliottiiCunninghamia lanceolataPinus massonianaPinus yunnanensisPinus armandiCupressus funebris;4) the soil fertility of A layer was higher than B layer in different coniferous forests;5) the soil water-holding capacity increased with the increase of soil non-capillary porosity and soil layer thickness.
出处 《贵州农业科学》 CAS 北大核心 2011年第12期154-158,共5页 Guizhou Agricultural Sciences
基金 贵州省林业科学技术研究项目"贵州省天然林保护工程效益监测与评价研究"(No2007-02) 贵州省公益林可持续经营创新能力建设项目[黔科合院所创能(2009)4002] 贵州省林业科学技术研究项目"杉木髙世代遗传改良技术研究"(2009-1)
关键词 针叶林 土壤肥力 土壤持水量 枯落物 天保工程区 贵州 coniferous forest soil fertility soil water-holding capacity litter Natural Forest Protection Area
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