火烧对中国北亚热带天然马尾松林土壤有机碳的影响

生态学杂志

火烧对中国北亚热带天然马尾松林土壤有机碳的影响

赵志霞¹,李正才^1*,周君刚²,程彩芳¹,赵睿宇¹,孙娇娇^2

(¹中国林业科学研究院亚热带林业研究所，浙江富阳 311400； ^2富阳市林业局，浙江富阳 311400）

出版日期:2016-01-10 发布日期:2016-01-10

Effect of fire on soil organic carbon of natural Pinus massoniana forest in north subtropical area of China.

ZHAO Zhi-xia¹, LI Zheng-cai^1*, ZHOU Jun-gang², CHENG Cai-fang¹, ZHAO Rui-yu¹, SUN Jiao-jiao^2

(¹Institute of Subtropical Forestry, Chinese Academy of Forestry, Fuyang 311400, Zhejiang, China; ^2Forestry Bureau of Fuyang City, Fuyang 311400, Zhejiang, China)

Online:2016-01-10 Published:2016-01-10

摘要/Abstract

摘要： 以北亚热带天然马尾松火烧迹地为研究对象，对火灾1年后0～50 cm各土层土壤有机碳和土壤养分含量变化进行分析。结果表明：火灾后各层土壤总有机碳、易氧化碳和轻组有机质含量均高于对照样地，增幅分别为4.5%～47.6%、6.6%～43.0%和9.0%～49.1%，且在0～10 cm和10～20 cm土层中差异极显著（P<0.01）；火灾发生1年后在0～50 cm土壤剖面土壤有机碳储量相比对照样地增加了23.8%（P<0.01）；过火后土壤总有机碳、易氧化碳和轻组有机质与土壤养分（全氮、水解氮、速效钾）的相关性均达到极显著水平（P<0.01）。火后土壤有机碳增加的主要原因是植被层未充分燃烧的有机残体的混入。

关键词: 多刺裸腹溞, 种群增长, 布洛芬浓度, 存活, 生殖, 藻密度

Abstract: A study was conducted to analyze the soil organic carbon and soil nutrient content changes of natural Pinus massoniana forest in the depth of 0-50 cm in north subtropical area of China one year after burning. The results showed that the contents of soil total organic carbon (TOC), easilyoxidized carbon (EOC) and light fraction organic carbon (LFOM) in the burned plots were higher than those in the unburned plots, with respective increases of 4.5%-47.6%, 6.6%-43.0% and 9.0%-49.1% and significant differences in the depths of 0-10 cm and 10-20 cm (P<0.01). Compared with the unburned plots, the soil carbon storage in the depth of 0-50 cm was increased by 23.8% after forest fire. TOC, EOC and LFOM were all significantly correlated to soil nutrients (total N, hydrolysis N, and available K) after forest fire. The main reason for the increased soil organic carbon could be due to the input of organic residues from vegetation layer.

Key words: ibuprofen concentration, population growth, Moina macrocopa, survival, reproduction, algal density.

赵志霞1,李正才1*,周君刚2,程彩芳1,赵睿宇1,孙娇娇2. 火烧对中国北亚热带天然马尾松林土壤有机碳的影响[J]. 生态学杂志.

ZHAO Zhi-xia1, LI Zheng-cai1*, ZHOU Jun-gang2, CHENG Cai-fang1, ZHAO Rui-yu1, SUN Jiao-jiao2. Effect of fire on soil organic carbon of natural Pinus massoniana forest in north subtropical area of China.[J]. cje.

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