| 毛竹林皆伐和剩余物保留对土壤质量的影响 |
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| 引用本文： | 刘宗悦,吕时新,徐钧杰,陈旭,楼一恺,祁祥斌,余树全.毛竹林皆伐和剩余物保留对土壤质量的影响[J].浙江农林大学学报,2022,39(6):1289-1295. |
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| 作者姓名： | 刘宗悦 吕时新 徐钧杰 陈旭 楼一恺 祁祥斌 余树全 |
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| 作者单位： | 1.浙江农林大学 林业与生物技术学院，浙江 杭州 3113002.永康市自然资源和规划局，浙江 金华 3213003.国家林业和草原局 华东调查规划设计院，浙江 杭州 3112014.浙江天目山国家级自然保护区管理局，浙江 杭州 311311 |
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| 基金项目： | 国家林业和草原局资助项目(2045210598)；浙江省科技厅资助项目(2022C02019) |
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| 摘 要： | 目的 毛竹Phyllostachys edulis林生态修复是当前中国亚热带地区面临的一个难题。了解毛竹林皆伐和剩余物保留后迹地土壤的自然恢复状况可为毛竹林生态修复提供指导。 方法 在毛竹林皆伐迹地设置了保留采伐剩余物(UR)、清理采伐剩余物(CR)和未采伐毛竹林地作为对照(ck)等3个处理。5 a后，通过土壤调查与测定，分析比较不同处理土壤指标变化，运用模糊判别和主成分分析，定量评价毛竹林皆伐后土壤自然恢复效果。 结果 ①CR、UR处理土壤容重分别比ck降低31%和14% (P＜0.05)，土壤总孔隙度、毛管持水量、田间持水量和饱和持水量均高于ck；UR处理土壤的持水力整体优于CR处理。②CR、UR处理土壤有机碳、全氮、全磷、碱解氮和速效钾质量分数均高于ck，各指标增加幅度为117%~123%；有效磷则表现为CR处理极显著(P＜0.01)低于UR和ck；由于保留了毛竹林皆伐后采伐剩余物，UR处理土壤有机碳、全氮、全磷、碱解氮、有效磷显著高于CR处理33%~99% (P＜0.05)；③CR、UR处理土壤脲酶、β-葡萄糖苷酶和过氧化物酶活性高于ck；UR处理土壤3种胞外酶活性均高于CR处理46%~98%。④综合评价结果表明:土壤质量得到较好恢复，毛竹林皆伐后恢复迹地土壤综合得分从高到低依次为采伐剩余物保留样区、采伐剩余物清理样区、毛竹林样区。 结论 毛竹林皆伐后的土壤经过5 a自然恢复，与毛竹林林地土壤相比得到较快修复，毛竹林皆伐后保留采伐剩余物更有利于土壤修复。图1表4参23
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| 关 键 词： | 毛竹 皆伐 土壤肥力 综合恢复评价 自然恢复 生态修复 |
| 收稿时间： | 2022-01-13 |
Effects of clear-cutting and harvest residue of Phyllostachys edulis forests on soil quality |
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| LIU Zongyue,Lü Shixin,XU Junjie,CHEN Xu,LOU Yikai,QI Xiangbin,YU Shuquan.Effects of clear-cutting and harvest residue of Phyllostachys edulis forests on soil quality[J].Journal of Zhejiang A&F University,2022,39(6):1289-1295. |
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| Authors: | LIU Zongyue Lü Shixin XU Junjie CHEN Xu LOU Yikai QI Xiangbin YU Shuquan |
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| Institution: | 1.School of Forestry and Biotechnology, Zhejiang A&F University, Hangzhou 311300, Zhejiang, China2.Yongkang Natural Resources and Planning Bureau, Yongkang 321300, Zhejiang, China3.East China Forest Inventory and Planning Institute, National Forestry and Grassland Administration, Hangzhou 311201, Zhejiang, China4.Management Office, National Nature Reserve of Mount Tianmu, Hangzhou 311311, Zhejiang, China |
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| Abstract: | Objective Ecological restoration of Phyllostachys edulis forest is a challenge in subtropical regions of China. This study aims to understand the natural restoration status of the soil after clear-cutting and residue retention of Ph. edulis forest, so as to provide guidance for ecological restoration of forest. Method In the clear-cutting sites, 3 treatments were set up, i.e. cutting residue reserved (UR), cutting residue removed (CR), and uncut Ph. edulis forest as the control (ck). The changes of soil indexes under different treatments were analyzed and compared through soil survey and measurement 5 years later, and fuzzy mathematical discrimination and principal component analysis were used to quantitatively evaluate the natural restoration effect of Ph. edulis forest after clear-cutting. Result (1) The soil bulk density of CR and UR decreased by 31% and 14% respectively compared with ck (P＜0.05). Soil total porosity, capillary water holding capacity, field water holding capacity and saturated water holding capacity were higher than those of ck. The water holding capacity of UR soil was better than that of CR. (2) The contents of soil organic carbon, total nitrogen, total phosphorus, alkali-hydrolyzed nitrogen and available potassium in CR and UR were higher than those in ck, and each index increased by 17%?123%. Available phosphorus showed that CR was significantly lower than UR and ck (P＜0.01). Due to the retention of cutting residues of Ph. edulis forest after clear-cutting, the soil organic carbon, total nitrogen, total phosphorus, alkali-hydrolyzed nitrogen and available phosphorus in UR were significantly higher than those in CR treatment by 33%?99% (P＜0.05). (3) The activities of urease, β-glucosidase and peroxidase in CR, UR soil were higher than those in ck. The activities of 3 extracellular enzymes in UR soil were 46%?98% higher than those in CR treatment. (4) The comprehensive evaluation results showed that the soil quality had been well restored, and the comprehensive scores ranging from high to low in the restored site soil of Ph. edulis forest after clear-cutting was sample area with cutting residue reserved, sample area with cutting residue removed, Ph. edulis forest sample area. Conclusion After 5 years of natural recovery, the soil of Ph. edulis forest after clear-cutting can be restored faster than that in Ph. edulis forest land, and the retention of the cutting residues after clear-cutting of Ph. edulis forest is more conducive to soil restoration. Ch, 1 fig. 4 tab. 23 ref.] |
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