| 滇石林地质公园喀斯特山地天然林和人工林凋落物与死地被物的动态特征 |
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| 引用本文： | WU Yi,吴毅,刘文耀,沈有信,崔建武,李玉辉,刘伦辉.滇石林地质公园喀斯特山地天然林和人工林凋落物与死地被物的动态特征[J].山地学报,2007,25(3):317-325. |
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| 作者姓名： | WU Yi 吴毅 刘文耀 沈有信 崔建武 李玉辉 刘伦辉 |
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| 作者单位： | 中国科学院西双版纳热带植物园昆明分部,云南,昆明,650223;中国科学院研究生院,北京,100049;中国科学院西双版纳热带植物园昆明分部,云南,昆明,650223;澳大利亚Curtin理工大学环境生物学院,珀斯,6845;云南师范大学旅游与地理科学学院,云南,昆明,650092;中国科学院西双版纳热带植物园昆明分部,云南,昆明,650223 |
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| 基金项目： | 云南省自然科学基金;中国科学院"百人计划" |
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| 摘 要： | 对云南石林地质公园景区及其保护区内喀斯特山地典型森林类型凋落物组成与数量及其动态,地表死地被物现存量与持水特性等进行了研究。结果表明,本区域保护较好的滇青冈(Cyclobalanopsis glaucoides)林的年凋落量达7.26 t/hm2;而以团花木新姜子(Neolitsea homiantha)为主的次生林只有1.98 t/hm2;云南松(Pinus yun-nanensis)人工林和干香柏(Cupressus duclouxiana)人工林年凋落量分别是2.49 t/hm2和4.07 t/hm2。这些森林的凋落节律相似,都呈明显的“双峰型”。在地表死地被物现存量方面,干香柏林因其叶片难以分解而具有较高的地表现存量,为13.59 t/hm2,随后依次为滇青冈林(7.57 t/hm2),团花新木姜子次生林(5.02 t/hm2)和云南松人工林(4.83 t/hm2),死地被物的持水量与其现存量的大小顺序一致。根据森林年凋落量与死地被物现存量的数量关系,表明保护较好的滇青冈林内枯枝落叶的分解率明显大于次生林和人工林,周转期也短,涵养水分能力也较强。因此,应加强对喀斯特山地自然森林的保护,同时也注意对现有人工林的改造,引进一些阔叶树种,提高群落结构的整体效应。
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| 关 键 词： | 凋落物 死地被物 持水力 喀斯特 天然林 人工林 石林地质公园 |
| 文章编号： | 1008-2786-（2007）3-317-09 |
| 修稿时间： | 2006-11-202007-02-16 |
Dynamics of Litterfall and Litter on Forest Floor of Natural Forest and Plantations in Stone Forest World Geological Park |
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| WU Yi.Dynamics of Litterfall and Litter on Forest Floor of Natural Forest and Plantations in Stone Forest World Geological Park[J].Journal of Mountain Research,2007,25(3):317-325. |
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| Authors: | WU Yi |
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| Institution: | 1. Xishnangbanna Tropical Botanical Garden, the Chinese Academy of Sciences,Kunming 650223 , China ; 2. Graduate School of Chinese Academy of Sciences, Beijing lO0049 , China ; 3. School of Environmental Biology, Curtin University of Technology, GPO Box U1987 Perth, WA 6845 ,Australia ; 4. College of Tourism and Geography Sciences , Yunnan Normal University ,Kunming 650092 ,China |
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| Abstract: | The composition and quantity of litterfall,and standing crop and water holding capacity of litter on forest floor of natural forest and plantations in karst mountainous area were investigated form 2003 to 2004 in the Stone Forest World Geological Park,Yunnan Province.The annual litterfall of natural Cyclobalanopsis glaucoides forest was 7.26 t/hm2,while it was 1.98 t/hm2,2.49 t/hm2 and 4.07 t/hm2 in the secondary forest of Neolitsea homiantha,Pinus yunnanensis plantation and Cupressus duclouxiana Plantation,respectively.The seasonality of litterfall is bimodal in all the forests.The order of the standing crop of litter on forest was C.duclouxiana Plantation(13.59 t/hm2) > C.glaucoides forest(7.57 t/hm2) > N.homiantha,secondary forest(5.02 t/hm2) > P.yunnanensis plantation(4.83 t/hm2).The pattern of water holding capacity of litter on forest floor of different forests was similar to the order of the standing crop.Based on the quantitative relationship of litterfall and litter on forest floor,it showed that the decomposition quotient of litter on forest floor was faster in the natural forest dominated by C.glaucoides than other forests in the area.Therefore,it was suggested that attention should be paid to conservation of the natural forest,and introduction of some suitable species to the monoculture plantation and also to protection of cover plants and litter on forest floor so as to regulate the composition and structure of the community and improve the integrative effect of the plantations. |
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| Keywords: | litterfall litter on forest floor water holding capacity Karst natural forest plantation stone forest world Geopark |
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