[1]段学鑫,王军会,党坤良*,等. 间伐对秦岭南坡红桦林土壤活性有机碳组分的影响[J].西北林学院学报,2020,35(1):8-14.[doi:10.3969/j.issn.1001-7461.2020.01.02]
 DUAN Xue-xin,WANG Jun-hui,DANG Kun-liang*,et al. Effects of Thinning on Soil Active Organic Carbon Composition in Betula albosinensis Forest in Southern Slope of Qinling Mountains[J].JOURNAL OF NORTHWEST FORESTRY UNIVERSITY,2020,35(1):8-14.[doi:10.3969/j.issn.1001-7461.2020.01.02]
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 间伐对秦岭南坡红桦林土壤活性有机碳组分的影响()
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《西北林学院学报》[ISSN:1001-7461/CN:61-1202/S]

卷:
第35卷
期数:
2020年第1期
页码:
8-14
栏目:
出版日期:
2020-01-31

文章信息/Info

Title:
 Effects of Thinning on Soil Active Organic Carbon Composition in Betula albosinensis Forest in Southern Slope of Qinling Mountains
文章编号:
1001-7461(2020)01-0008-07
作者:
 段学鑫1王军会2党坤良1*高媛1王先初1
 (1.西北农林科技大学 林学院,陕西 杨陵 712100;2.陕西省林产品开发贸易总公司,陕西 西安 710077)
Author(s):
 DUAN Xue-xin1WANG Jun-hui2DANG Kun-liang1*GAO Yuan1WANG Xian-chu1
 (1.College of Forestry,Northwest A&F University,Yangling 712100,Shaanxi,China; 2.Shaanxi Forest Products Development and Trade Corporation,Xian 710077,Shaanxi,China)
关键词:
 秦岭南坡红桦林间伐强度活性有机碳总有机碳
Keywords:
 southern slope of Qinling Mountians Betula albosinensis forest thinning intensity active organic carbon total organic carbon
分类号:
S792.15
DOI:
10.3969/j.issn.1001-7461.2020.01.02
文献标志码:
A
摘要:
 通过对秦岭南坡红桦林的研究,设置5个间伐区域(5%、10%、15%、20%和25%)和对照(CK),研究抚育间伐对红桦林土壤活性有机碳(轻组分有机碳、易氧化有机碳、可溶性有机碳)的影响,为秦岭南坡红桦林的科学管理提供了理论依据。结果表明:1)每个间伐强度均能提高总有机碳含量,且15%最高,为26.05 g·kg-1;其含量在不同间伐强度的顺序为15%>20%>10%>25%>5%>CK;每个土层的总有机碳含量都可以通过间伐强度来增加。2)随着间伐强度的加大轻组分有机碳的含量会降低,不同的间伐强度下轻组分有机碳含量顺序为CK>5%>10%>15%>20%>25%;在不同间伐强度下,易氧化有机碳和总有机碳具有相同的变化规律,以间伐强度15%最高,为4.75 g·kg-1,不同间伐强度易氧化有机碳顺序为15%>20%>25%>10%>5%>CK。间伐对表层易氧化有机碳含量有显著影响,对深层几乎无影响。间伐可提高可溶性有机碳含量,以强度20%增加最明显,为133.91 mg·kg-1,其含量顺序为20%>15%>10%>25%>5%>CK。间伐能显著影响表层可溶性有机碳,对深层几乎无影响。3)3种活性碳占总有机碳的百分比在强度15%时均最低,分别为11.12%~34.44%、16.07%~21.15%和0.57%~0.82%。表明15%的间伐强度不仅有利于土壤总有机碳的积累,而且能提高土壤有机碳的稳定性,因此间伐强度15%可作为红桦林间伐的参考指标。
Abstract:
 The effects of thinning on soil active organic carbon (light organic carbon,oxidized organic carbon,dissolved organic carbon) in Betula albosinensis forest were analyzed to provide a theoretical basis for planning the forest cultivation in the southern slope of Qinling Mountains.We established the intensity thinning into six categories:0 (control),5%,10%,15%,20%,and 25%.The results showed that:1) the total organic carbon content of the soil increased under each thinning intensity,and the average organic carbon content of the soil within the thinning intensity of 15% was the highest (26.05 g·kg-1); the total organic carbon content under different thinning intensity was 15%>20%>10%>25%>5%>control; each thinning intensity could increase the total organic carbon content of each soil layer.2) The light fraction organic carbon decreased with the increase of thinning intensity.The order of light fraction of soil organic carbon within different thinning intensity was control>5%>10%>15%>20%>25%.The change trend of oxidized organic carbon was the same with total organic carbon content,with the highest content of 4.75 g·kg-1 under intensity of 15%.The order of oxidized organic carbon within different thinning soils was 15%>20%>25%>10%>5% >control.The thinning management had a great influence on the content of oxidized organic carbon in the surface soil,but had little effect on the deep layer.Thinning could increase the content of soluble organic carbon,which was most obvious with a 20% increase in strength (133.91 mg·kg-1),and the contents of soluble organic carbon was in the order of 20%>15%>10%>25%>5%>control.Thinning could significantly affect the surface soluble organic carbon,and had almost no effect on the deep layer.3) The percentages of ROC,LFOC and DOC in total organic carbon were all the lowest under 15% thinning intensity,ranged from 11.12%-34.44%,16.07%-21.15% and 0.57%-0.82%,respectively.In summary,thinning with intensity of 15% was not only beneficial to the accumulation of total organic carbon in the soil,but also could improve the stability of soil organic carbon,which could be used as a reference index for the thinning intensity of B.albosinensis forest.

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备注/Memo

备注/Memo:
 收稿日期:2019-03-03修回日期:2019-04-10
基金项目:林业公益性行业科研专项:陕西秦岭林区森林抚育经营技术与成效监测(A2990215149)。
作者简介:段学鑫,男,硕士在读,研究方向:秦岭森林抚育间伐。E-mail:2322719000@qq.com
*通信作者:党坤良,男,副教授,硕士生导师,研究方向:森林抚育经营。E-mail:Dangkl@126.com
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