带状采伐后不同时期毛竹林恢复和土壤养分特征
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“十三五”国家重点研发计划(2016YFD0600902);


Restoration Characteristics and Soil Nutrient Content of Phyllostachys edulis Forests after Strip Clear Cutting
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    摘要:

    为研究带状采伐毛竹林对竹林恢复和土壤养分的影响,以福建省建瓯市毛竹林为研究对象,设置5 m(处理1,C1)和7 m(处理2,C2)2种采伐宽度,以不进行采伐处理为对照(CK),研究采伐后当年新鞭生长期(I时期,2018年10月)和采伐后次年新立竹生长期(Ⅱ时期,2019年6月)新竹生长相关指标和土壤养分变化特征。结果表明:(1)C1、C2、CK处理的出笋数量分别为2 227、2 650和1 955株·hm-2,且C2与C1、CK差异显著(P<0.05);退笋率各处理之间无显著差异(P>0.05),表现为C12。(2)2种采伐处理的胸径(DBH)显著低于CK,表现为CK>C2>C1。(3)采伐后Ⅰ时期和Ⅱ时期相比,土壤全磷(TP)和全钾(TK)含量增加,全氮(TN)和全碳(TC)含量降低;采伐后I时期的C1、C2处理中土壤TN、TP、TK和TC含量均大于CK,但采伐后Ⅱ时期的土壤TC含量小于CK。研究认为,带状采伐能提高出笋量和立竹数,增加土壤氮磷钾养分含量;7 m带状采伐竹林恢复状况整体上优于5 m带状采伐。

    Abstract:

    To study the characteristics of soil quality restoration after strip clear cutting, we took the Phyllostachys edulis forest in Jianou City, Fujian Province as the research object, set 5m (Treatment 1, C1) and 7 m (Treatment 2, C2) two kinds of cutting width, with a control (CK) with no cutting, the characteristics of new bamboo growth and soil nutrient changes in the new whip growing period (period Ⅰ, October2018) and the next year after harvesting (period Ⅱ, June2019) were studied. The results showed that: (1) the number of shoots by C1, C2 and CK were 2 227, 2 650 and 1 955 plant·hm-2, respectively. C2 treatment was significantly different from C1 and CK (P<0.05); There was no significant difference (P>0.05) between the treatments of the rate of returning bamboo shoots, which showed that C12. (2) The DBH of the two harvesting treatments were significantly lower than that of CK, shown by CK>C2>C1. (3) After logging, the contents of TP (total phosphorus) and TK (total potassium) in soil increased, while the contents of TN (total nitrogen) and TC (total carbon) decreased, compared with those of Ⅱ period. The contents of soil TN, TP, TK and TC under C1 and C2 treatments were all greater than that of CK during period I, but the soil TC content was less than that of CK during period Ⅱ. The results showed that, strip cutting could increase the number of bamboo shoots and bamboo stands and increase the contents of nitrogen, phosphorus and potassium in soil. The recovery status of 7 m strip cutting in bamboo forest was better than that of 5 m cutting overall.

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张洋洋,凡莉莉,徐文达,等.带状采伐后不同时期毛竹林恢复和土壤养分特征[J].西北植物学报,2020,40(8):1407-1413

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  • 在线发布日期: 2020-09-24
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