西南林业大学学报
西南林業大學學報
서남임업대학학보
JOURNAL OF SOUTHWEST FORESTRY COLLEGE
2014年
3期
46-50
,共5页
森林火灾%土壤%理化性质%养分%改善
森林火災%土壤%理化性質%養分%改善
삼림화재%토양%이화성질%양분%개선
forest fire%soil%physical and chemical properties%nutrient%improve
通过实地调查与实验室测定，分析林火干扰对昆明近郊云南省森林自然中心华山松和柏木人工林林地土壤理化性质的影响。结果表明，火烧后，华山松林下土壤密度比未过火区增加11.48％，土壤自然含水量、饱和持水量、毛管持水量、总孔隙度以及毛管孔隙度分别下降32.38％、16.21％、18.71％、9.94％、22.44％；柏木林地土壤密度比未过火区增加10.38％，自然含水量、饱和持水量、毛管持水量、总孔隙度以及毛管孔隙度分别下降23.55％、10.77％、23.22％、5.38％、12.91％。过火区华山松林下土壤pH、有效磷含量比未过火区分别增加5.81％、130.25％，全氮、全磷、全钾、水解氮和速效钾含量分别下降53.30％、28.30％、22.60％、39.74％、25.32％；过火区柏木林下土壤pH、有效磷含量比未过火区分别增加12.33％、176.34％，全氮、全磷、全钾、水解氮和速效钾含量分别减少了31.28％、31.25％、67.09％、40.66％、51.21％。火烧后林地土壤更加板结，土壤养分含量降低，不利于土壤肥力的改善。
通過實地調查與實驗室測定，分析林火榦擾對昆明近郊雲南省森林自然中心華山鬆和柏木人工林林地土壤理化性質的影響。結果錶明，火燒後，華山鬆林下土壤密度比未過火區增加11.48％，土壤自然含水量、飽和持水量、毛管持水量、總孔隙度以及毛管孔隙度分彆下降32.38％、16.21％、18.71％、9.94％、22.44％；柏木林地土壤密度比未過火區增加10.38％，自然含水量、飽和持水量、毛管持水量、總孔隙度以及毛管孔隙度分彆下降23.55％、10.77％、23.22％、5.38％、12.91％。過火區華山鬆林下土壤pH、有效燐含量比未過火區分彆增加5.81％、130.25％，全氮、全燐、全鉀、水解氮和速效鉀含量分彆下降53.30％、28.30％、22.60％、39.74％、25.32％；過火區柏木林下土壤pH、有效燐含量比未過火區分彆增加12.33％、176.34％，全氮、全燐、全鉀、水解氮和速效鉀含量分彆減少瞭31.28％、31.25％、67.09％、40.66％、51.21％。火燒後林地土壤更加闆結，土壤養分含量降低，不利于土壤肥力的改善。
통과실지조사여실험실측정，분석림화간우대곤명근교운남성삼림자연중심화산송화백목인공림임지토양이화성질적영향。결과표명，화소후，화산송림하토양밀도비미과화구증가11.48％，토양자연함수량、포화지수량、모관지수량、총공극도이급모관공극도분별하강32.38％、16.21％、18.71％、9.94％、22.44％；백목임지토양밀도비미과화구증가10.38％，자연함수량、포화지수량、모관지수량、총공극도이급모관공극도분별하강23.55％、10.77％、23.22％、5.38％、12.91％。과화구화산송림하토양pH、유효린함량비미과화구분별증가5.81％、130.25％，전담、전린、전갑、수해담화속효갑함량분별하강53.30％、28.30％、22.60％、39.74％、25.32％；과화구백목림하토양pH、유효린함량비미과화구분별증가12.33％、176.34％，전담、전린、전갑、수해담화속효갑함량분별감소료31.28％、31.25％、67.09％、40.66％、51.21％。화소후임지토양경가판결，토양양분함량강저，불리우토양비력적개선。
With field researching and laboratory determinating,analyzing the effect of forest fire disturbance on Soil physical and chemical properties of Pinus armandii and Cupressus plantation,in Yunnan Forest Nature Center on the outskrits of Kunming.After forest fire,soil density of Pinus armandii has increased by 11.48%,while soil non-capillary porosity,saturation moisture capacity,capillary water holding capacity,total soil porosity,and capillary porosity in soil have decreased by 32.38%,16.21%,18.71%,9.94%,22.44%,respectively.In Cupressus plantation,after forest fire,soil density has increased by 10.38%,while soil non-capillary porosity,saturation moisture capacity,capillary water holding capacity,total soil porosity,and capillary porosity in soil have decreased by 23.55%,10.77%,23.22%, 5.38%,12.91%,respectively.Moreover,compared to control,soil pH and available P in Pinus armandii have increased by 5.81%,130.25%,respectively,while soil organic materials,total N,total P,total K,hydrolysable N and rapidly available K have reduced by 53.30%,28.30%,22.60%,39.74%,25.32%,respectively.After forest fire,soil pH and available P have increased by 12.33%,176.34%,respectively.And the soil organic materials,total N,total P, total K,hydrolysable N and rapidly available K have reduced by 31.28%,31.25%,67.09%,40.66%,51.21%, respectively.Forest fire would result in soil hardening,decrease soil nutrient content,reduce improve soil fertility.
