四川农业大学学报 ›› 2020, Vol. 38 ›› Issue (06): 677-684.

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5种人工相思林凋落物现存量及其持水特性

赵文东1, 李凯1, 王俊1, 何宗明1,2   

  1. 1.福建农林大学林学院,福州 350002;
    2.国家林业局和草原局杉木工程技术研究中心,福州 350002
  • 收稿日期:2020-09-08 出版日期:2020-12-28 发布日期:2021-02-05
  • 作者简介:赵文东,硕士研究生。*责任作者:何宗明,研究员,主要从事人工林生产力和水土保持等方面研究,E-mail:hezm2@126.com。
  • 基金资助:
    国家自然科学基金项目(30972354)

Water-Holding Capacity and Accumulation Amount of Litters of Five Kinds of Acacia Plantations

ZHAO Wendong1, LI Kai1, WANG Jun1, HE Zongming1,2   

  1. 1. College of Forestry,Fujian Agriculture and Forestry University,Fuzhou 350002,China;
    2. Fir Engineering Technology Research Center,State Forestry Administration,Fuzhou 350002,China
  • Received:2020-09-08 Online:2020-12-28 Published:2021-02-05

摘要: 【目的】对福建省漳浦县5种相思树种人工林林下凋落物现存量及其持水特性进行研究,找出林下凋落物持水能力强的相思树种。【方法】通过野外调查与室内凋落物网袋浸泡法,研究5种相思树种人工林林下凋落物的现存量及其持水特性。【结果】林下凋落物现存量为马占相思(16.13 t/hm2)>厚荚相思(11.25 t/hm2)>卷荚相思(9.69 t/hm2)>直干大叶相思(9.66 t/hm2)>黑木相思(6.40 t/hm2);林下调落物最大持水量为马占相思(30.70 t/hm2)>卷荚相思(18.31 t/hm2)>厚荚相思(17.72 t/hm2)>直干大叶相思(16.00 t/hm2)>黑木相思(10.46 t/hm2);5种人工林林下凋落物最大持水率在157.48%~190.35%之间,表现为马占相思(190.35%)>卷荚相思(187.03%)>直干大叶相思(165.57%)>黑木相思(163.43%)>厚荚相思(157.48%);林下凋落物有效拦蓄量在7.29~23.65 t/hm2之间,其排序为马占相思(23.65 t/hm2)>卷荚相思(13.46 t/hm2)>厚荚相思(12.86 t/hm2)>直干大叶相思(12.27 t/hm2)>黑木相思(7.29 t/hm2)。【结论】马占相思人工林林下凋落物现存量和水文效应最大。

关键词: 人工相思林, 凋落物, 持水量, 持水率, 吸水速率, 有效拦蓄量

Abstract: 【Objective】 Accumulation and water holding characteristics of forest floor litter of five species Acacia plantations in Zhangpu County, Fujian Province were studied in order to find out the Acacia species with high water holding capacity of forest floor litter. 【Method】 Using field investigation and indoor litter bag soaking method, the accumulation and water holding characteristics of forest floor litter under five species Acacia plantations were studied. 【Result】 Forest floor litter accumulation was in the order: Acacia mangium Willd. (16.13 t/hm2)>Acacia crassicarpa Benth. (11.25 t/hm2)>Acacia cincinnata F.Muell. (9.69 t/hm2)>Acacia auriculiformis A. Cunn. ex Benth (9.66 t/hm2)>Acacia melanoxylon R.Br. (6.40 t/hm2). Maximum water holding capacity of forest floor litter is Acacia mangium Willd. (30.70 t/hm2)>Acacia cincinnata F.Muell. (18.31 t/hm2)>Acacia crassicarpa Benth. (17.72 t/hm2)>Acacia auriculiformis A. Cunn. ex Benth. (16.00 t/hm2)>Acacia melanoxylon R.Br. (10.46 t/hm2) Maximum water holding rate of forest floor litter under the five species Acacia plantations, varied between 157.48% and 190.35%, were as follows: Acacia mangium Willd. (190.35%)>Acacia cincinnata F.Muell. (187.03%)>Acacia auriculiformis A. Cunn. ex Benth. (165.57%)>Acacia melanoxylon R.Br. (163.43%)>Acacia crassicarpa Benth. (157.48%). Effective storage capacity of forest floor litter, varied between 7.92 and 23.65 t/hm2, were in the order: Acacia mangium Willd. (23.65 t/hm2)>Acacia cincinnata F. Muell. (13.46 t/hm2)>Acaica crassicarpa Benth. (12.86 t/hm2)>Acaia auriculiformis A. Cunn. ex Benth. (12.27 t/hm2)>Acacia melanoxylon R.Br (7.29 t/hm2). 【Conclusion】 Acacia mangium Willd. plantations had the highest accumulation of forest floor litter and hydrological effect.

Key words: Acacia plantation, litter, water-holding capacity, water-holding rate, water-absorption rate, effective holding capacity

中图分类号: 

  • S715.7