| 重庆酸雨区马尾松香樟混交林的土壤化学性质和林木生长特征 |
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| 引用本文： | 李志勇,王彦辉,于澎涛,张治军,杜士才,何萍,王祥,段健,李振华.重庆酸雨区马尾松香樟混交林的土壤化学性质和林木生长特征[J].植物生态学报,2010,34(4):387-395. |
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| 作者姓名： | 李志勇 王彦辉 于澎涛 张治军 杜士才 何萍 王祥 段健 李振华 |
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| 作者单位： | 河南科技大学农学院, 河南洛阳 471003;中国林业科学研究院森林生态环境与保护研究所, 国家林业局森林生态环境重点实验室, 北京 100091;重庆市林业局, 重庆401147;重庆市江北区农林水利局, 重庆 400023; 重庆市铁山坪林场, 重庆 400026 |
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| 基金项目： | 国家重点基础研究发展计划项目，科技部"十一五"科技支撑计划项目，中国林业科学院中央级公益性科研院所项目，国家林业局天然林保护工程科技支撑项目，国家林业局森林生态环境重点实验室资助项目共同资助 |
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| 摘 要： | 为给遭受酸化危害的重庆马尾松(Pinus massoniana)纯林的恢复与管理提供科学依据,在属于酸雨区的重庆市江北区铁山坪林场,调查了马尾松香樟(Cinnamomum camphora)混交林的土壤化学性质和林木生长状况,并与毗邻的马尾松纯林和香樟纯林进行了比较。结果表明,与马尾松纯林相比,混交林腐殖质层和土壤酸度降低,交换性盐基离子Ca2+和Mg2+含量增加,酸性阳离子Al3+和H+含量明显减少(p0.05)。混交林马尾松树冠下腐殖质层和0–60cm土层马尾松细根的干重、长度、表面积、体积和根尖数的总密度都显著低于马尾松纯林(p0.05),比值分别为0.44、0.71、0.59、0.46和0.71,马尾松树高显著低于马尾松纯林(p0.05),其针叶变色率为15%,显著高于马尾松纯林(p0.05),香樟的生长特征与香樟纯林相似。结果说明,尽管混交林的土壤化学性质优于马尾松纯林,但林中马尾松的生长状况表现出了明显的恶化迹象,而香樟依然比较健康,这可能与香樟具有明显的竞争优势有关。因此,在利用香樟营造与马尾松的混交林来改善遭受酸化危害的马尾松纯林的生长状况时,应注意调控香樟的竞争优势。
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| 关 键 词： | 酸雨 香樟 生长 混交林 马尾松 根系 |
| 收稿时间： | 2009-05-25 |
Soil chemical properties and growth characteristics of mixed plantation of Pinus massoniana and Cinnamomum camphora in the acid rain region of Chongqing, China |
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| LI Zhi-Yong,WANG Yan-Hui,YU Peng-Tao,ZHANG Zhi-Jun,DU Shi-Cai,HE Ping,WANG Xiang,DUAN Jian, LI Zhen-Hua College of Agriculture,Henan University of Science , Technology,Luoyang,Henan ,China,Key Laboratory of Forest Ecology Environment of the State Forestry Administration.Soil chemical properties and growth characteristics of mixed plantation of Pinus massoniana and Cinnamomum camphora in the acid rain region of Chongqing, China[J].Acta Phytoecologica Sinica,2010,34(4):387-395. |
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| Authors: | LI Zhi-Yong WANG Yan-Hui YU Peng-Tao ZHANG Zhi-Jun DU Shi-Cai HE Ping WANG Xiang DUAN Jian LI Zhen-Hua College of Agriculture Henan University of Science Technology Luoyang Henan China Key Laboratory of Forest Ecology Environment of the State Forestry Administration |
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| Affiliation: | LI Zhi-Yong1,2,WANG Yan-Hui2,YU Peng-Tao2,ZHANG Zhi-Jun2,DU Shi-Cai3,HE Ping3,WANG Xiang4,DUAN Jian5,, LI Zhen-Hua1 1College of Agriculture,Henan University of Science , Technology,Luoyang,Henan 471003,China,2Key Laboratory of Forest Ecology Environment of the State Forestry Administration,Institute of Forest Ecology,Environment , Protection,Chinese Academy of Forestry,Beijing 100091,3Forestry Ad-ministration of Chongqing City,Chongqing 401147,4Bureau of Agriculture,... |
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| Abstract: | Aims Acid rain has led to Pinus massoniana forest decline in Chongqing, Southwestern China. Cinnamomum camphora, an acid-resistant broadleaved tree species, has been widely distributed in the region. Cinnamomum camphora is thought to improve soil properties and health condition of P. massoniana; however, little information is available from mixed plantations of P. massoniana and C. camphora exposed to acid rain. Our objective was to examine soil chemical properties and growth traits of these two species in ... |
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| Keywords: | acid rain Cinnamomum camphora growth mixed plantation Pinus massoniana roots |
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