| 凤阳山4种森林土壤在不同温度培养下活性有机碳的变化 |
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| 引用本文： | 张勇,胡海波,王增,黄玉洁,吕爱华,张金池,刘胜龙.凤阳山4种森林土壤在不同温度培养下活性有机碳的变化[J].浙江农林大学学报,2018,35(2):243-251. |
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| 作者姓名： | 张勇 胡海波 王增 黄玉洁 吕爱华 张金池 刘胜龙 |
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| 作者单位： | 1.南京林业大学 江苏省南方现代林业协同创新中心, 江苏 南京 2100372.南京林业大学 江苏省水土保持与生态修复重点实验室, 江苏 南京 2100373.浙江省林业生态工程管理中心, 浙江 杭州 3100204.浙江省林业科学研究院, 浙江 杭州 3100235.浙江凤阳山国家级自然保护区 管理局, 浙江 龙泉 323700 |
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| 基金项目： | 浙江省森林生态效益补偿基金公共管护支出项目2013-10江苏省高校优势学科建设工程和长江三角洲森林生态站资助项目2017-LYPT-155浙江省林业科技项目2012B17 |
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| 摘 要： | 以浙江凤阳山国家级自然保护区典型常绿阔叶林、杉木Cunninghamia lanceolata林、针阔混交林、柳杉Cryptomeria fortunei林为研究对象，采用室内培养试验，研究10，20，30℃条件下4种森林土壤微生物量碳（MBC）和可溶性有机碳（DOC）的动态。结果表明:4种森林类型中，土壤总有机碳（SOC）和DOC质量分数以柳杉林为最高，MBC则以常绿阔叶林为最高，3种形态有机碳质量分数均以杉木林为最低。随着培养时间的延长，10℃下，不同森林土壤的MBC质量分数总体上呈前期下降快、后期下降慢，DOC质量分数呈先上升后下降；20℃下，不同森林土壤MBC和DOC质量分数均呈相对缓慢下降；30℃下，不同森林土壤MBC质量分数先上升后下降，DOC质量分数前期下降快、后期下降慢的趋势。同一森林土壤在不同温度条件下，土壤MBC质量分数大小顺序为30℃ > 20℃ > 10℃，土壤DOC质量分数则表现为10℃ > 20℃ > 30℃。培养56 d后，常绿阔叶林、针阔混交林土壤的MBC和DOC质量分数的下降幅度高于杉木林、柳杉林。柳杉林和常绿阔叶林SOC和DOC质量分数显著高于杉木林（P < 0.05），在较高温度条件下培养的土壤DOC质量分数较低，而MBC质量分数则较高。
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| 关 键 词： | 森林生态学 森林类型 温度 总有机碳 土壤微生物量碳 可溶性有机碳 动态 |
| 收稿时间： | 2017-03-25 |
Varieties of active soil organic carbon of four forest types with varying incubation temperatures in Fengyang Mountain |
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| ZHANG Yong,HU Haibo,WANG Zeng,HUANG Yujie,Lü Aihua,ZHANG Jinchi,LIU Shenglong.Varieties of active soil organic carbon of four forest types with varying incubation temperatures in Fengyang Mountain[J].Journal of Zhejiang A&F University,2018,35(2):243-251. |
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| Authors: | ZHANG Yong HU Haibo WANG Zeng HUANG Yujie Lü Aihua ZHANG Jinchi LIU Shenglong |
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| Abstract: | As an important part of the active soil organic carbon (SOC) pool, microbial biomass carbon (MBC) is the impetus and key to nutrient and energy cycling in the soil ecosystem. To provide important scientific references for forest soil carbon sequestration and greenhouse gas emission in this region, the warming effect on forest soil MBC and dissolved organic carbon (DOC) were determined using an incubation experiment. The content dynamics of MBC and DOC of an evergreen broadleaf forest, a Cunninghamia lanceolata forest, a mixed coniferous and broadleaf forest, and a Cryptomeria fortunei forest in the National Nature Reserve of Fengyang Mountain were studied using an incubation experiment at 10℃, 20℃, and 30℃. Results showed that SOC and DOC in the Cryptomeria fortunei forest were significantly higher (P < 0.05) than other forests; MBC in the mixed broadleaf forest was significantly higher (P < 0.05)than the other forests; and SOC, MBC, and DOC in the Cunninghamia lanceolata forest were significantly lower (P < 0.05). At 10℃, MBC for various stand types declined fast at an early stage and then declined slower. However, DOC rose in the early stage and then declined later. At 20℃, MBC and DOC with various stand types slowly declined. At 30℃, MBC with various stand types rose early but declined later, and DOC quickly declined early and slowly declined later. For the same detection time, MBC for the same stand type was characterized by 30℃ > 20℃ > 10℃; whereas, DOC was 10℃ > 20℃ > 30℃. For the same temperature, MBC and DOC in the evergreen broadleaf forest as well as the mixed coniferous and broadleaf forest declined larger on the whole than in the C. lanceolata forest and the C. fortunei forest after the 56 days of incubation experiment. |
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