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应用生态学报 ›› 2004, Vol. ›› Issue (6): 919-923.

• 研究论文 • 上一篇    下一篇

辽西半干旱区几种人工林生态系统涵养水源功能研究

罗跃初1, 韩单恒1, 王宏昌1, 刘建民2, 魏晶1, 吴钢1   

  • 收稿日期:2003-11-07 修回日期:2004-01-17
  • 通讯作者: 吴刚
  • 基金资助:
    国家自然科学基金项目(70173035);科技部农业科技成果转化资金资助项目(03EFNZ16600355)

Water conservation functions of several artificial forest ecosystems in semiarid region of western Liaoning Province

LUO Yuechu1, HAN Shanheng1, WANG Hongchang1, LIU Jianmin2, WEI Jing1, WU Gang 1   

  1. 1. Key Laboratory of System Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China;
    2. Chaoyang Forestry Bureau, Chaoyang 122000, China
  • Received:2003-11-07 Revised:2004-01-17

摘要: 从森林生态系统树冠截留降雨、枯落物持水及土壤蓄水3个层次对辽西半干旱区种人工林生态系统的涵养水源功能进行了定量研究.结果表明,各人工林生态系统树冠对降雨的平均截留率为14.58%~37.19%,依次为沙棘林>油松沙棘混交林>杨树沙棘混交林>油松纯林>杨树纯林;枯落物层厚度为1.6~4.1 cm,枯落物贮量为1 890.4~6 425.2 kg·hm-2,枯落物层厚度和贮量均为沙棘林>油松沙棘混交林>杨树沙棘混交林>油松纯林>杨树纯林,枯落物最大持水量取决于枯落物贮量及其最大持水率,枯落物最大持水量为 5957.7~19 332.9 kg·hm-2,依次为沙棘林>油松沙棘混交林>杨树沙棘混交林>油松纯林>杨树纯林;各人工林生态系统0~40 cm土壤层非毛管蓄水量为23.70~37.85 mm,依次为沙棘林>杨树沙棘混交林>油松沙棘混交林>杨树纯林>油松纯林.在种人工林生态系统中,沙棘林的涵养水源功能最好,混交林较油松和杨树纯林有更好的涵养水源功能.

关键词: 辽西半干旱区, 人工林, 涵养水源, 树冠截留, 枯落物持水, 土壤蓄水

Abstract: Five artificial forest ecosystems in semiarid region of western Liaoning Province were selected to test their water conservation capacity.The average interception rate of different artificial forest ecosystems varied from 14.58% to 37.19%,and the order was H.rhamnoides forest ecosystem> P.tabulaeformis-H.rhamnoides mixed forest ecosystem> P.simonii H.rhamnoides mixed forest ecosystem> P.tabulaeformis forest ecosystem> P.simonii forest ecosystem.The thickness of the litter layer in different forest ecosystems varied from 1.6 to 4.1 cm,and the biomass of the litter varied from 1 890.4 to 6 425.2 kg hm-2.The order of the thickness and the biomass of the litter in different forest ecosystems was H.rhamnoides forest ecosystem> P.tabulaeformis H.rhamnoides mixed forest ecosystem> P.simonii H.rhamnoides mixed forest ecosystem> P.tabulaeformis forest ecosystem> P.simonii forest ecosystem.The maximum water holding capacity of the litter in different forest ecosystems varied form 5 957.7 to 1 9332.9 kg·hm-2,and the order was H.rhamnoides forest ecosystem> P.tabulaeformis H.rhamnoides mixed forest ecosystem> P.simonii H.rhamnoides mixed forest ecosystem> P.tabulaeformis forest ecosystem> P.simonii forest ecosystem.The water holding capacity of non capillary porosity of 0~40 cm soil layer in different forest ecosystems varied from23.70 to 37.85 mm,and the order was H.rhamnoides forest ecosystem> P.simonii H.rhamnoides mixed forest ecosystem> P.tabulaeformis H.rhamnoides mixed forest ecosystem> P.simonii forest ecosystem> P.tabulaeformis forest ecosystem.Among the five artificial forest ecosystems, H.rhamnoides forest ecosystem had the best water conservation capacity,and the mixed forest ecosystems had a better water conservation capacity than P.tabulaeformis and P.simonii forest ecosystem.

Key words: Semiarid region of western Liaoning Province, Artificial forest, Conservation of water resources, Canopy interception, Water holding of litter, Soil water conservation

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