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喀斯特地区不同森林类型枯落物储量及其持水特性比较

作  者:
郭金鹏;刘延惠
关键词:
枯落物;喀斯特;持水特性;施秉县
摘  要:
对施秉县白云岩区4种森林类型枯落物的存储量和持水特性进行研究.结果表明:所有森林类型的总枯落物现存量变动范围为8.6t/hm~2~37.1t/hm~2,枯落物总现存量大小依次为水竹林(37.1t/hm~2)﹥针阔混交林(28.9t/hm~2)﹥阔叶林(26.7t/hm~2)﹥针叶林(8.6t/hm~2);阔叶林持水率最大(543.16%),针叶林最小(357.92%);枯落物层的持水率与浸泡时间呈显著对数关系,而吸水速率与浸泡时间呈显著幂函数关系.本研究结果可为喀斯特石漠化治理和植被恢复提供重要科学依据.
作  者:
Guo Jin-peng;LIU Yan-hui;Guizhou Academy of Forestry;
单  位:
Guo Jin-peng%LIU Yan-hui%Guizhou Academy of Forestry
关键词:
Litter;;Karst;;Water holding characteristics;;Shibing County
摘  要:
The litter storage and water holding characteristics of 4 forest types in the dolomite region of Shibing county were studied. The results showed that the variation range of total litter storage of all forest types was 8. 6 t/hm~2 to 37. 1 t/hm~2,and the total litter storage was in order of bamboo forest( 37. 1 t/hm~2) > coniferous broad-leaved mixed forest( 28. 9 t/hm~2) > broadleaf forest( 26. 7 t/hm~2) > coniferous forest( 8. 6 t/hm~2); the water holding rate of broad-leaved forest was the largest( 543. 16%),and coniferous forest was the smallest( 357. 92%). There was a significant logarithmic relationship between the water holding rate and the soaking time of the litter layer,while the water absorption rate showed a significant power function relationship with the soaking time. This paper was expected to provide important scientific basis for the management of rocky desertification and vegetation restoration in Karst area.

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