| 冰灾后粤北常绿阔叶林粗死木质残体的组成与结构 |
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| 引用本文： | 柳泽鑫,张璐,区余端,孙东,苏志尧.冰灾后粤北常绿阔叶林粗死木质残体的组成与结构[J].西南林学院学报,2011,31(4):18-23. |
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| 作者姓名： | 柳泽鑫 张璐 区余端 孙东 苏志尧 |
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| 作者单位： | 华南农业大学林学院,广东广州,510642 |
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| 基金项目： | 广东省自然科学基金项目(9451064201003716)资助；广东省省级财政专项项目资助 |
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| 摘 要： | 应用样方调查法,研究冰灾后粤北常绿阔叶林粗死木质残体（coarse woody debris,CWD）的组成和结构特征,比较不同坡向林分的CWD存在形式、种类组成、径级结构、样方分布以及腐烂等级状态。结果表明：冰灾后迎风坡林分的CWD贮量为14.81 t/hm2,明显高于背风坡林分5.66 t/hm2的CWD贮量;且不同坡向林分的CWD存在形式有较大的差异,迎风坡林分中CWD存在形式以倒木为主,而背风坡林分则以枯立木为主;倒木的分解速度较快,主要处于中度分解状态,而大多数枯立木则处于轻度分解状态;迎风坡林分大径级树种由于积雪作用,形成大量倒木;而背风坡林分小径级树种受低温冻害的影响,大量枯萎死亡。冰灾引起的CWD剧增会严重影响森林演替的进程,其中倒木对森林生态系统结构和功能短期的调节作用比较明显,而枯立木对森林生态系统的影响是一个长期的过程,有必要对其进行长期量化研究。
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| 关 键 词： | 冰灾 粗死木质残体 贮量 腐烂等级 |
The Composition and Structure of Coarse Woody Debris in the Evergreen Broadleaved Forest After Ice Storm in Northern Guangdong Province |
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| LIU Ze-xin,ZHANG Lu,OU Yu-duan,SUN Dong,SU Zhi-yao.The Composition and Structure of Coarse Woody Debris in the Evergreen Broadleaved Forest After Ice Storm in Northern Guangdong Province[J].Journal of Southwest Forestry College,2011,31(4):18-23. |
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| Authors: | LIU Ze-xin ZHANG Lu OU Yu-duan SUN Dong SU Zhi-yao |
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| Institution: | LIU Ze-xin,ZHANG Lu,OU Yu-duan,SUN Dong,SU Zhi-yao(College of Forestry,South China Agricultural University,Guangzhou Guangdong 510642,China) |
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| Abstract: | The composition and structure of the coarse woody debris(CWD) in the evergreen broadleaved forest after ice storm in northern Guangdong Province were studied by means of plot survey to compare the CWD existence form,species composition,DBH structure,and the CWD decay status of the forest stands at different aspects of the hills.The results showed that the CWD storage in the windward stand was 14.81 t/hm2,which was significantly higher than that of in the leeward stand(5.66 t/hm2) after the ice storm.There w... |
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| Keywords: | ice storm coarse woody debris(CWD) biomass decay class |
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