东北林业大学学报
東北林業大學學報
동북임업대학학보
JOURNAL OF NORTHEAST FORESTRY UNIVERSITY
2015年
6期
72-77,88
,共7页
陈百灵%董希斌%崔莉%唐国华
陳百靈%董希斌%崔莉%唐國華
진백령%동희빈%최리%당국화
低质林生态改造%枯落物水文效应%大兴安岭
低質林生態改造%枯落物水文效應%大興安嶺
저질림생태개조%고락물수문효응%대흥안령
Low-quality forest reformation%Litter hydrological capacity%Daxing’ an Mountains
试验样地设置在大兴安岭地区翠峰林场174林班,对大兴安岭白桦低质林枯落物未分解层及半分解层蓄积量、自然持水率、最大持水率、最大持水量、有效拦蓄量5个指标进行连续4a的观测,研究发现带状生态改造对枯落物的蓄积量、最大持水量、有效拦蓄量及自然持水率影响属于中度变异。对枯落物未分解层最大持水率属于高度变异,而对其半分解层最大持水率属于中度变异。带状生态改造对低质林枯落物的影响较为适中。林窗生态改造对枯落物的蓄积量、最大持水量影响属于高度变异,对自然持水量、有效拦蓄量的影响属于中度变异,对枯落物未分解层最大持水率影响属于高度变异,而对枯落物半分解层最大持水率影响属于中度变异。经过4a带状及林窗生态改造后,生态改造带宽度6 m的样地,其枯落物蓄积量最大,水土保持能力最佳;生态改造带宽度14 m的样地,枯落物有效拦蓄量最大,水源涵养功能最佳。
試驗樣地設置在大興安嶺地區翠峰林場174林班,對大興安嶺白樺低質林枯落物未分解層及半分解層蓄積量、自然持水率、最大持水率、最大持水量、有效攔蓄量5箇指標進行連續4a的觀測,研究髮現帶狀生態改造對枯落物的蓄積量、最大持水量、有效攔蓄量及自然持水率影響屬于中度變異。對枯落物未分解層最大持水率屬于高度變異,而對其半分解層最大持水率屬于中度變異。帶狀生態改造對低質林枯落物的影響較為適中。林窗生態改造對枯落物的蓄積量、最大持水量影響屬于高度變異,對自然持水量、有效攔蓄量的影響屬于中度變異,對枯落物未分解層最大持水率影響屬于高度變異,而對枯落物半分解層最大持水率影響屬于中度變異。經過4a帶狀及林窗生態改造後,生態改造帶寬度6 m的樣地,其枯落物蓄積量最大,水土保持能力最佳;生態改造帶寬度14 m的樣地,枯落物有效攔蓄量最大,水源涵養功能最佳。
시험양지설치재대흥안령지구취봉림장174림반,대대흥안령백화저질림고락물미분해층급반분해층축적량、자연지수솔、최대지수솔、최대지수량、유효란축량5개지표진행련속4a적관측,연구발현대상생태개조대고락물적축적량、최대지수량、유효란축량급자연지수솔영향속우중도변이。대고락물미분해층최대지수솔속우고도변이,이대기반분해층최대지수솔속우중도변이。대상생태개조대저질림고락물적영향교위괄중。림창생태개조대고락물적축적량、최대지수량영향속우고도변이,대자연지수량、유효란축량적영향속우중도변이,대고락물미분해층최대지수솔영향속우고도변이,이대고락물반분해층최대지수솔영향속우중도변이。경과4a대상급림창생태개조후,생태개조대관도6 m적양지,기고락물축적량최대,수토보지능력최가;생태개조대관도14 m적양지,고락물유효란축량최대,수원함양공능최가。
We took 174 blocks from Cuifeng Forest Bureau in Daxing ’ an Mountains to observe the total storage , natural water capacity, maximum water capacity , maximum water content rate , effective retain rate of the white birch low-quality in both undecomposed litter and half-decomposed litter in successive four years .The belt-ecological reformation had moderate effects on the total storage , natural water capacity , maximum water capacity , and effective retain rate .While the belt-eco-logical reformation affected the maximum water content rate of undecomposed litter highly , it affected the half-decomposed moderately .The influence of belt-ecological reformation is middling .By window-ecological reformation , the total storage and maximum water capacity was strongly affected , meanwhile, effective retain rate and natural water capacity was moder-ately varied.The maximum water content rate and the undecomposed level changed significantly , while the half-decom-posed varied middling.After four years’ reformation, the plot with 6-m width had the largest total storage, and it could hold the soil and water best .The effective retain rate for the plot with 14-m width was the biggest , and its water-conserva-tion is best .