不同密度马尾松人工林生态系统碳储量空间分布格局  

Spatial Distribution Property of Carbon Stocks in Artificial Pine Ecosystems with Different Density

作　　者：张国庆[1] 黄从德[1] 郭恒[2] 邓彪 杨和芳 

机构地区：[1]四川农业大学林学园艺学院,四川雅安625014 [2]四川省汉源县林业局,四川汉源625300 [3]四川省马边县林业局,四川马边614000 [4]重庆市铜梁县林业局,重庆铜梁402560

出　　处：《浙江林业科技》2007年第6期10-14,共5页Journal of Zhejiang Forestry Science and Technology

基　　金：国家"十一五"科技支撑项目"长江中上游西南山区退化生态系统综合整治技术与模式"(2006BAC01A11);四川省科技攻关项目"四川省天然林保护工程区碳交换机制建设中的价值分析"(05SG023-009)

摘　　要：对1 245、1 620、2 070株/hm2 3种密度的马尾松人工林生态系统碳储量及其空间分布格局进行了研究,结果表明,马尾松人工林乔木层碳储量随林分密度的增大而增大,分别为41.301、46.377和52.018 t/hm2,林下层碳储量差异不明显,分别为0.935、0.936和0.956 t/hm2,土壤层有机碳储量随林分密度的增大而减小,分别为107.895、98.472和87.040 t/hm2;马尾松人工林生态系统碳储量也随林分密度的增大而减小,分别为150.131、145.785、140.014 t/hm2,碳储量空间分布序列均为土壤层>乔木层>林下层。Investigation on carbon stock and its spatial distribution in three artificial pine （ Pinus massoniana ） ecosystems with different densities demonstrated that carbon stock of tree layer increased with density, about 41.30, 46.377 and 52.018 t/hm^2. That of underground layer had no great difference in 3 plantations with respectively 0.935, 01936 and 0.956 t/hm^2. Organic carbon stock in soil decreased with forest density with 107.895, 98.472 and 87.040 t/ha. The total carbon stock in the three ecosystems decreased with increase of forest density, with 150.13, 145.785, and 140.014 t/hm^2. The order of carbon stock was soil layer 〉 tree layer 〉 underground layer.

关 键 词：林分密度 马尾松 人工林生态系统 碳储量 空间分布 

分 类 号：S791.248[农业科学—林木遗传育种]