文章详细信息 关键词： 银新杨;;热值;;灰分;;化学组分;;含碳率 [gap=1121]Keywords: P.alba×P.bolleana;caloric value;ash content;chemical composition;carbon content rate
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The carbon content rates of the soil layers in the aged plantations were higher than those in the young plantations.
年龄大的林分土壤各层含碳率高于相应的年龄小的林分。
参考来源 - 千年桐人工林生态系统碳库研究·2,447,543篇论文数据，部分数据来源于NoteExpress
对福建马尾松幼龄林、中龄林和成熟林生态系统中各组分的含碳率和碳贮量进行了比较研究。
The carbon content and carbon storage of Pinus massoniana Lamb at different growing stages were measured.
植被含碳率的确定对精确估算陆地生态系统中的植被碳库数量，进而研究区域碳循环有着非常重要的意义。
It is very important for accurate estimation of plant carbon pool in terrestrial ecosystem and further research of regional carbon cycle to determine carbon content of vegetation.
回归分析表明，粘结剂加入量对复合材料电阻率影响较大，碳铜混合粉含铜量对复合材料电阻率的影响较小。
The experimental expression on the resistivity of carbon copper composite change with copper content in carbon copper mixture powder and adhesive content was decluced.
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