湖南林业科技
湖南林業科技
호남임업과기
HUNAN FORESTRY SCIENCE & TECHNOLOGY
2014年
3期
23-29
,共7页
马丰丰%唐春%张灿明%罗佳%牛艳东%杨楠%李有志
馬豐豐%唐春%張燦明%囉佳%牛豔東%楊楠%李有誌
마봉봉%당춘%장찬명%라가%우염동%양남%리유지
日本落叶松%人工林%碳素含量%生态系统%亚热带
日本落葉鬆%人工林%碳素含量%生態繫統%亞熱帶
일본락협송%인공림%탄소함량%생태계통%아열대
Larix kaempferi%plantation%carbon content%ecosystem%subtropics
基于35块样地调查数据,对亚热带日本落叶松人工林生态系统的碳素含量进行了分析。结果表明:(1)日本落叶松人工林生态系统碳素含量包括植被、凋落物与土壤三部分,其中乔木层601.8961±29.5624 g/kg,灌木层537.9580±34.7839 g/kg,草本层416.1075 g/kg,凋落物层550.9278±30.5664 g/kg,土壤层30.4771±1.8480 g/kg,表现规律为:乔木层>凋落层>灌木层>草本层,地上部分>地下部分,且乔木层、凋落物层和土壤层的碳素含量随着林分年龄和坡向的不同而变化。(2)日本落叶松植被层的碳素含量平均值为0.5187 g/g,略高于国际上通用的转换率0.50 g/g,如果采用0.50 g/g来估算日本落叶松植被层的碳贮量与碳密度,会使得估算结果偏小。(3)日本落叶松乔木层不同器官碳素含量变化范围为561.4993~645.1068 g/kg,其高低顺序大致排列为:树干>树枝>树皮>树根>树叶,且随着林分年龄和坡向的不同而变化。
基于35塊樣地調查數據,對亞熱帶日本落葉鬆人工林生態繫統的碳素含量進行瞭分析。結果錶明:(1)日本落葉鬆人工林生態繫統碳素含量包括植被、凋落物與土壤三部分,其中喬木層601.8961±29.5624 g/kg,灌木層537.9580±34.7839 g/kg,草本層416.1075 g/kg,凋落物層550.9278±30.5664 g/kg,土壤層30.4771±1.8480 g/kg,錶現規律為:喬木層>凋落層>灌木層>草本層,地上部分>地下部分,且喬木層、凋落物層和土壤層的碳素含量隨著林分年齡和坡嚮的不同而變化。(2)日本落葉鬆植被層的碳素含量平均值為0.5187 g/g,略高于國際上通用的轉換率0.50 g/g,如果採用0.50 g/g來估算日本落葉鬆植被層的碳貯量與碳密度,會使得估算結果偏小。(3)日本落葉鬆喬木層不同器官碳素含量變化範圍為561.4993~645.1068 g/kg,其高低順序大緻排列為:樹榦>樹枝>樹皮>樹根>樹葉,且隨著林分年齡和坡嚮的不同而變化。
기우35괴양지조사수거,대아열대일본락협송인공림생태계통적탄소함량진행료분석。결과표명:(1)일본락협송인공림생태계통탄소함량포괄식피、조락물여토양삼부분,기중교목층601.8961±29.5624 g/kg,관목층537.9580±34.7839 g/kg,초본층416.1075 g/kg,조락물층550.9278±30.5664 g/kg,토양층30.4771±1.8480 g/kg,표현규률위:교목층>조락층>관목층>초본층,지상부분>지하부분,차교목층、조락물층화토양층적탄소함량수착림분년령화파향적불동이변화。(2)일본락협송식피층적탄소함량평균치위0.5187 g/g,략고우국제상통용적전환솔0.50 g/g,여과채용0.50 g/g래고산일본락협송식피층적탄저량여탄밀도,회사득고산결과편소。(3)일본락협송교목층불동기관탄소함량변화범위위561.4993~645.1068 g/kg,기고저순서대치배렬위:수간>수지>수피>수근>수협,차수착림분년령화파향적불동이변화。
The carbon contents of Larix kaempferi plantation ecosystem in subtropics on the base of investigation data of 35 plots were analyzed. The results indicated:(1 ) The carbon content of Larix kaempferi plantation ecosystem contained three parts:vegetation layer,litter layer and soil layer,which with 601.896 1 ±29.562 4 g/kg in arbor layer,537.958 0 ±34.783 9 g/kg in shrub layer,416.107 5 g/kg in herb layer,550.927 8 ±30.566 4 g/kg in litter layer and 30.477 1 ±1.848 0 g/kg in soil layer. Change trend of carbon content in all layers was arbor layer>litter layer >shrub layer>herb layer,and aboveground part >underground part. In addition,carbon contents of arbor layer,litter layer and soil layer changed with stand age and slope. (2)Average carbon content of vegetation layer was 0.518 7 g/g,which was lit-tle higher than the current international conversion coefficient of 0.5. So,using coefficient of 0.5 may underestimate car-bon storage and carbon density of Larix kaempferi. (3)Different organs’carbon contents of Larix kaempferi arbor layer varied from 561.499 3 g/kg to 645.106 8 g/kg. Its order was trunk >branch >bark >root >leaf,and varied with stand age and slope.