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曾念念, 何传龙, 黄从德, 季荣飞, 张健, 李贤伟. 不同间伐强度对柏木低效人工林土壤有机碳的影响[J]. 四川林业科技, 2015, 36(3): 25-30. DOI: 10.16779/j.cnki.1003-5508.2015.03.006
引用本文: 曾念念, 何传龙, 黄从德, 季荣飞, 张健, 李贤伟. 不同间伐强度对柏木低效人工林土壤有机碳的影响[J]. 四川林业科技, 2015, 36(3): 25-30. DOI: 10.16779/j.cnki.1003-5508.2015.03.006
ZENG Nian-nian, HE Chuan-long, HUANG Cong-de, JI Rong-fei, ZHANG Jian, LI Xian-wei. Effect of Thinning Intensity on Soil Organic Carbon of Low-efficiency Cupressus funebris Plantation[J]. Journal of Sichuan Forestry Science and Technology, 2015, 36(3): 25-30. DOI: 10.16779/j.cnki.1003-5508.2015.03.006
Citation: ZENG Nian-nian, HE Chuan-long, HUANG Cong-de, JI Rong-fei, ZHANG Jian, LI Xian-wei. Effect of Thinning Intensity on Soil Organic Carbon of Low-efficiency Cupressus funebris Plantation[J]. Journal of Sichuan Forestry Science and Technology, 2015, 36(3): 25-30. DOI: 10.16779/j.cnki.1003-5508.2015.03.006

不同间伐强度对柏木低效人工林土壤有机碳的影响

Effect of Thinning Intensity on Soil Organic Carbon of Low-efficiency Cupressus funebris Plantation

  • 摘要: 以德阳市旌阳区33a生柏木(Cupressus funebris)低效人工林为对象,研究了对照(CK,0%)、弱度间伐(T1,15%)、中度间伐(T2,25%)、强度间伐(T3,35%)和极强度间伐(T4,50%)5种强度下,柏木低效人工林土壤有机碳和活性碳的变化及其相关性。结果表明,在间伐1a后,土壤总有机碳、微生物量碳、易氧化碳和水溶性碳含量都随间伐强度的增加而增加,T4和T3增加明显(p < 0.05)。土壤有机碳与土壤微生物量碳、易氧化碳和水溶性碳之间均呈现极显著正相关(p < 0.01)。研究结果说明,间伐有助于提高柏木低效人工林土壤的固碳能力。

     

    Abstract: In this paper,taking 33 years old low-efficiency Cupressus funebris plantation for an object,researches were conducted on the short-term effect of 15% (T1),25% (T2),35% (T3,) and 50% (T4) thinning on the changes and correlation of its soil organic carbon and active carbon. This low-efficiency Cupressus funebris plantation is located in Jingyang District of Deyang City,Sichuan Province. The results indicated that after one year,the total organic carbon(TOC),microbial biomass carbon(MBC),readily oxidizable carbon(ROC),and water-soluble organic carbon(WSOC) increased with the strengthening of thinning intensity,while the positive effects of T3 and T4 were significant at the level of 0.05. Furthermore,there existed significant positive correlations among the TOC and ROC,WSOC and SMBC. Thus,the results displayed that the thinning could facilitate Cupressus funebris to sequestrate more carbon in the soil of the low-efficiency plantation within hilly regions of Sichuan.

     

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