| 秦岭火地塘林区倒木及其土壤化学元素含量特征 |
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| 引用本文： | 袁杰,侯琳,蔡靖,张硕新.秦岭火地塘林区倒木及其土壤化学元素含量特征[J].林业科学,2011,47(11). |
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| 作者姓名： | 袁杰 侯琳 蔡靖 张硕新 |
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| 作者单位： | 1. 西北农林科技大学林学院 杨凌712100
2. 西北农林科技大学林学院 杨凌712100;陕西秦岭森林生态系统国家野外科学观测研究站 宁陕711600 |
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| 基金项目： | 国家林业局林业公益性行业科研专项“秦岭山地森林增汇理水技术体系研究”(201004036); 西北农林科技大学人才专项项目 |
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| 摘 要： | 以秦岭火地塘林区油松和漆树倒木为研究对象,采用国际倒木腐烂等级划分方法,测定其 5 个腐烂等级的6种化学元素( C,N,P,K,Ca,Mg) 的含量,分析倒木对土壤化学元素的影响。结果表明: 油松倒木5个腐烂等级间 C 含量没有显著差异,而漆树倒木 C 含量随着分解显著递减; 漆树和油松Ⅴ级倒木的 N 含量随着分解显著递增; Mg 含量在油松倒木分解过程中无显著差异,在漆树倒木分解后期显著增加; P,K,Ca 含量在漆树和油松分解过程中都无显著差异,但 P 和 Ca 含量随着油松和漆树倒木的腐烂呈线性增加,K 含量随油松和漆树倒木分解呈线性下降。油松和漆树倒木下土壤 C 含量随着土层加深而显著减少,K,Ca,Mg 含量随土层加深无显著差异; 土壤 C含量随倒木腐烂显著递增,N,P,Ca,Mg 含量随倒木分解无显著差异。该研究揭示倒木分解过程中各种化学元素的变化规律,对促进秦岭森林生态系统物质循环和制定林木更新措施有重要的参考价值。
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| 关 键 词： | 秦岭 油松 漆树 倒木 分解 化学元素 |
Characteristics of Fallen Wood and Soil Nutrients in Huoditang Forest Region of the Qinling Mountains |
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| Yuan Jie,Hou Lin,Cai Jing,Zhang Shuoxin.Characteristics of Fallen Wood and Soil Nutrients in Huoditang Forest Region of the Qinling Mountains[J].Scientia Silvae Sinicae,2011,47(11). |
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| Authors: | Yuan Jie Hou Lin Cai Jing Zhang Shuoxin |
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| Institution: | Yuan Jie1 Hou Lin1,2 Cai Jing1,2 Zhang Shuoxin1,2 (1.College of Forestry,Northwest A & F University Yangling 712100,2.Qinling National Forest Ecosystem Research Station Ningshan 711600) |
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| Abstract: | Fallen woods of Pinus tabulaeformis and Toxicodendron vernicifluum were used to study the decomposition process. According to an international classification, nutrient contents of 6 elements (C,N,P,K,Ca,Mg) in five decomposition classes were measured in Huoditang forest region in the Qinling Mountains, and the elements in the soil were also analyzed. The results showed that there were no significant differences among C contents in the decay classes of P. tabulaeformis, but the C content of T. vernicifluum d... |
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| Keywords: | Qinling Mountains Pinus tabulaeformis Toxicodendron vernicifluum fallen wood decomposition nutrients |
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