| 黄河三角洲盐碱地主要造林树种的动态生长与生态效应 |
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| 引用本文： | 马丙尧,杜振宇,刘方春,马海林,邢尚军.黄河三角洲盐碱地主要造林树种的动态生长与生态效应[J].林业科技,2014(1):50-53. |
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| 作者姓名： | 马丙尧 杜振宇 刘方春 马海林 邢尚军 |
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| 作者单位： | 山东省林业科学研究院,济南250014 |
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| 基金项目： | 山东省科技发展计划项目“黄河三角洲人工刺槐林更新改造技术研究”（2010GNC10942）和山东省农业重大应用技术创新项目“黄河三角洲盐碱化土地高效利用模式配置研究”资助 |
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| 摘 要： | 各树种的胸径随着林龄增加而增长,白蜡的树高随林龄延长也呈递增趋势,而其他树种的树高变化则没有明显规律性,在林龄13年内,杨树的胸径和树高生长要明显优于其他4个树种。刺槐、白蜡、白榆和臭椿的长期人工林可以显著降低土壤盐分,增加土壤的养分,从而培肥土壤,但对土壤pH稍有提升作用,碳汇量大小顺序为:白蜡刺槐白榆臭椿;刺槐人工林更新为杨树林后,林地土壤含盐量有所增加,但土壤肥力得到改善,明显提高了人工林的固碳性能。
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| 关 键 词： | 滨海盐土 人工林 动态生长 土壤改良 固碳 |
Dynamic Growth and Ecological Effect of Main Tree Species in Saline -Alkali Soils of the Yellow River Delta |
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| Institution: | MA Bingyao ( Shandong Academy of Forestry, Ji＇nan 25001,4) |
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| Abstract: | The results indicated that the DBH （diameter at breast height）was increased with increasing forest age for all tree species. The tree height of velvet ash had an increase trend with forest age, but no obvious change was found for the others. Within 13 years of growth, the DBH and tree height of poplar were better in comparison with other four tree species. The long - term plantations of black locust, velvet ash, Siberian elm and Tree - of - Heaven significantly decreased soil salt content, increased soil nutrient contents and thus enhanced soil fertility. However, soil pH was slightly increased by long - term plantations. The order of carbon sequestration was as follow： velvet ash 〉 black locust 〉 Siberian elm 〉 Tree - of - Heaven. The renewal of black locust plantation by poplar increased soil salt content to some extent, improved soil fertility and obviously enhanced carbon sequestration of the plantation. |
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| Keywords: | Coastal saline soil Plantation Dynamic growth Soil improvement Carbon fixation |
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