The use of laboratory measurements to predict nitrogen mineralization and nitrification in Pinus radiata plantations after harvesting
The use of laboratory measurements to predict nitrogen mineralization and nitrification in Pinus radiata plantations after harvesting
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使用实验室测量预测辐射松种植园收获后的氮矿化和硝化作用
DOI：
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发表时间：
1998
期刊：
影响因子：
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通讯作者：
M. Bligh
中科院分区：
文献类型：
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作者：
J. Carlyle;E. Nambiar;M. Bligh
我们测试了实验室估计的净氮矿化和硝化（随后被称为氮矿化和硝化）是否可以用来预测这些过程中的领域后，收获9个辐射松D。唐你种植园。氮矿化和硝化的实验室速率通过完整岩心的有氧培养（20 ° C）来测量。这些过程在该领域的年利率进行了测量，使用顺序取芯程序。在实验室条件下，林地和矿质土壤的氮素矿化速率分别为1.1 - 6.6和0.019 - 0.525mg·kg-1·d-1，其中硝化作用占氮素矿化的6 - 71%和8 - 93%。野外林下土壤氮素年矿化量为5.2 - 23.9kg·ha-1·年-1，与室内土壤氮素矿化量无相关性。田间矿质土壤氮素年矿化量为16-74kg·ha~（-1）·年~（-1），与室内土壤氮素矿化量呈显著正相关（r~2 = 0.97）。结果表明，该地区森林地表年硝化作用为3~4...
We tested whether laboratory estimates of net N mineralization and nitrification (subsequently termed N mineralization and nitrification) could be used to predict these processes in the field after harvesting nine Pinus radiata D. Don. plantations. Laboratory rates of N mineralization and nitrification were measured by aerobic incubation (20°C) of intact cores. Annual rates of these processes in the field were measured using a sequential coring procedure. Rates of N mineralization in the laboratory were 1.1-6.6 and 0.019-0.525mg·kg-1·day-1 for forest floor and mineral soil, respectively (nitrification accounted for 6-71 and 8-93% of N mineralization). Annual N mineralization by forest floor in the field was 5.2-23.9kg·ha-1·year-1and was not correlated with N mineralized in the laboratory. Annual N mineralization in mineral soil in the field was 16-74kg·ha-1·year-1and was highly correlated (r2 = 0.97) with N mineralized in the laboratory. Annual nitrification in forest floor in the field ranged from 3 to 4...