| 马尾松林4种林分改造树种枯落物持水特性 |
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| 引用本文： | 杨俊生,陈应彪,王俊林,陈雪林,陈红跃.马尾松林4种林分改造树种枯落物持水特性[J].广东林业科技,2014,30(4):37-41. |
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| 作者姓名： | 杨俊生 陈应彪 王俊林 陈雪林 陈红跃 |
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| 作者单位： | 饶平县林业局,饶平县林业科学研究所 潮州,饶平县林业科学研究所 潮州,饶平县林业科学研究所 潮州,华南农业大学林学院 广州 |
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| 基金项目： | 广东省林业科技创新项目(2009KJCX011-02)。 |
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| 摘 要： | 对广东省潮州市饶平县的樟（Cinnamomum camphora）、桃花心木（Swietenia mahagoni）、南酸枣（Choerospondias axillaris）和乐昌含笑（Michelia chapensis）4种林分改造树种枯落物储量及持水特性进行研究.结果表明,樟、桃花心木、南酸枣和乐昌含笑枯落物鲜重分别为7.74,8.94,10.38,6.87 t/hm2;各树种枯落物干重为南酸枣（7.89 t/hm2）＞桃花心木（6.55 t/hm2）＞樟（5.44 t/hm2）＞乐昌含笑（4.66 t/hm2）;最大持水量、最大拦蓄量和有效拦蓄量变化规律基本一致,顺序都为南酸枣＞桃花心木＞樟＞乐昌含笑,而4个树种的最大持水率、最大拦蓄率和有效拦蓄率排序相反.枯落物持水量与浸泡时间、持水率与浸泡时间之间、吸水速率与浸泡时间都存在明显的相关关系.在不同浸泡时间段,4种改造树种枯落物持水量和吸水速率均为南酸枣＞桃花心木＞樟＞乐昌含笑,而其持水率呈现相反顺序.
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| 关 键 词： | 枯落物 持水量 拦蓄量 吸水速率 |
| 收稿时间： | 2014/3/17 0:00:00 |
| 修稿时间： | 5/3/2014 12:00:00 AM |
Water-holding Characteristics of Four Tree Species in Transformation Plantations of Pinus massoniana |
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| Institution: | College of Forstry, South China Agricultural University |
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| Abstract: | This paper mainly studied storage and water-holding characteristics of forest litter of four tree species （Cinnamomum camphora,Swietenia mahagoni,Choerospondias axillaris and Michelia chapensis） in transformation plantations of Pinus massoniana in Raoping,Chaozhou,Guangdong.The fresh litter storage were 7.74 t·hm-2 for Cinnamomum camphora,8.94 t·hm-2 for S.mahagoni,10.38 t·hm-2 for Choerospondias axillaris and 6.87 t·hm-2 for M.chapensis.The order of dry litter storage was Choerospondias axillaris （7.89 t· hm-2） ＞ S.mahagoni （6.55 t·hm-2） ＞ Cinnamomum camphora （5.44 t·hm-2） ＞M.chapensis （4.66 t·hm-2）.The changing trends of the maximum water-holding capacity,maximum interception capacity and effective interception capacity were the same with the order of Choerospondias axillaris ＞ S.mahagoni ＞ Cinnamomum camphora ＞ M.chapensis.However,the orders of maximum water-holding content,maximum interception content and effective interception content were inverse of those.There were correlation between litter water-holding capacity and soaking time,litter water-holding content and soaking time,water absorption rate of litter and soaking time,respectively.Water-holding capacity and water absorption rate of litter followed the order of Choerospondias axillaris ＞ S.mahagoni ＞ Cinnamomum camphora ＞ M.chapensis,while litter water-holding content had a inverse order. |
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| Keywords: | litter water holding capacity interception amount water absorption rate |
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