发现文章标题:炼山对巨桉林地土壤全磷和有效磷含量的影响:非林地土壤
炼山对巨桉林地土壤全磷和有效磷含量的影响:非林地土壤
摘要。研究了四川省乐山市兴福寺和棉花山等地炼山初期、炼山后一年生、炼山后五年生巨桉林地土壤磷含量。结果表明,炼山对巨桉林地土壤全磷和有效磷含量的影响十分显著。炼山初期林地土壤全磷含量高于炼山后一年生和五年生巨桉林地土壤,而土壤有效磷含量则低于炼山后一年生和五年生巨桉林地土壤。炼山后一年生的巨桉林地土壤有效磷含量最高,而全磷含量则是炼山初期最高。说明炼山对巨桉林地土壤全磷和有效磷含量在短时间内有提高的作用,但随着时间推移全磷和有效磷含量都会下降。
关键词:炼山;巨桉人工林;全磷;有效磷
中图分类号:S714.6文献标识码:A文章编号:0439-8114(2011)14-2838-03
EffectofBurningonSoil’sTotalandAvailablePhosphorusContentsinthe
EucalyptusgrandisPlantation
LIUZheng-gang,YINWu-jun
(SichuanProvincialKeyLabofForestryEcologicalEngineering,SichuanAgriculturalUniversity,Ya’an625014,Sichuan,China)
Abstract:Soilphosphoruscontentwasmeasuredintheeucalypt(Eucalyptusgrandis)plantationwithdifferentburningtreatmenttime(1-month,1-yearand5-year)inXingfutempleandMianhuashaninLeshancityofSichuanprovince.Burninghadgreatinfluenceonsoiltotalandavailablephosphoruscontentsintheeucalyptplantation.Thecontentofsoiltotalphosphorusinearlydaysofburningwashigherthanthatafter1and5yearsofburning.Butthecontentofsoilavailablephosphorusinearlydaysofburningwaslowerthanthatafter1and5yearsofburning.Thecontentofsoilavailablephosphorusafter1yearofburningwasthehighest,whilethecontentofsoiltotalphosphorusinearlydaysofburningwasthehighest.Theseresultsshowedthatburningcouldimprovethecontentofsoiltotalandavailablephosphorusofeucalyptplantationinashorttime,butthecontentswoulddecreaseinmanyyearsafterburning.
Keywords:burning;Eucalyptusgrandisplantation;totalphosphorus;availablephosphorus
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