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OALib Journal期刊
ISSN: 2333-9721
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毛竹林混交经营对土壤活性有机碳库和碳库管理指数的影响
DOI: 10.3969/j.issn.1000-2006.2013.05.010, PP. 49-54
Keywords: 毛竹纯林,竹阔混交林,竹杉混交林,土壤活性有机碳库,碳库管理指数
Abstract:
以江西省安福县毛竹纯林、竹阔混交林、竹杉混交林为对象，研究了不同混交经营模式对毛竹林土壤活性有机碳库和碳库管理指数的影响。结果表明：（1）不同林型土壤活性有机碳库大小顺序为毛竹纯林(14？56t/hm2)＞竹杉混交林(12？33t/hm2)＞竹阔混交林(10？42t/hm2)，并且达到显著性差异。（2）混交经营后土壤总有机碳含量（ct）、活性有机碳含量（cl）、稳定态碳含量（cnl）、碳库指数（cpi）均有不同程度降低，竹杉混交林土壤碳库活度（l）、碳库活度指数（li）值最大，竹阔混交林氧化稳定系数（kos）值最大。以毛竹纯林作为参考计算不同混交经营模式下土壤碳库管理指数（cmi）值：竹杉混交林(106？96)＞毛竹纯林(100？00)＞竹阔混交林(71？06)。（3）在此次研究中竹杉混交经营模式对土壤具有培肥作用，处于良性管理状态，有利于林木的生长发育。
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