| 紫金山不同海拔高度土壤的碳氮分布特征 |
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| 引用本文： | 朱红霞,王艳玲,张耀鸿,周晓冬. 紫金山不同海拔高度土壤的碳氮分布特征[J]. 南京信息工程大学学报, 2012, 4(4): 326-329 |
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| 作者姓名： | 朱红霞 王艳玲 张耀鸿 周晓冬 |
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| 作者单位： | 南京信息工程大学 江苏省农业气象重点实验室,南京,210044;南京信息工程大学 应用气象学院,南京,210044;南京信息工程大学 江苏省农业气象重点实验室,南京,210044;南京信息工程大学 应用气象学院,南京,210044;南京信息工程大学 江苏省农业气象重点实验室,南京,210044;南京信息工程大学 应用气象学院,南京,210044;南京信息工程大学 江苏省农业气象重点实验室,南京,210044;南京信息工程大学 应用气象学院,南京,210044 |
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| 基金项目： | 江苏省农业气象重点实验室开放基金(JKLAM201203);国家自然科学基金(40901146) |
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| 摘 要： | 有机碳氮是影响陆地生态系统的重要因子,保持并提高土壤碳氮储量,是稳定生态系统生产力的关键.以南京紫金山土壤为研究对象,依照海拔高度进行采样,对比分析了土壤有机碳氮的变化规律.研究结果表明:紫金山土壤有机碳氮受地表植被的影响比较大,混交林>林地>草地,土壤有机碳氮总量随海拔的升高呈现上升趋势,土壤碳氮比高达34~45,且随海拔升高呈下降趋势.相关分析表明,紫金山土壤有机碳与全氮质量分数呈显著正相关关系,由此说明氮素主要以有机氮的形式存在于有机质中.
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| 关 键 词： | 紫金山 不同海拔高度 土壤 有机质 全氮 |
| 收稿时间： | 2011-09-01 |
Distribution characteristics of soil carbon and nitrogen in different altitude of Purple Mountain |
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| ZHU Hongxi,WANG Yanling,ZHANG Yaohong and ZHOU Xiaodong. Distribution characteristics of soil carbon and nitrogen in different altitude of Purple Mountain[J]. Journal of Nanjing University of Information Science & Technology, 2012, 4(4): 326-329 |
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| Authors: | ZHU Hongxi WANG Yanling ZHANG Yaohong ZHOU Xiaodong |
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| Affiliation: | Jiangsu Key Laboratory of Agricultural Meteorology,Nanjing University of Information Science & Technology,Nanjing 210044;School of Applied Meteorology,Nanjing University of Information Science & Technology,Nanjing 210044;Jiangsu Key Laboratory of Agricultural Meteorology,Nanjing University of Information Science & Technology,Nanjing 210044;School of Applied Meteorology,Nanjing University of Information Science & Technology,Nanjing 210044;Jiangsu Key Laboratory of Agricultural Meteorology,Nanjing University of Information Science & Technology,Nanjing 210044;School of Applied Meteorology,Nanjing University of Information Science & Technology,Nanjing 210044;Jiangsu Key Laboratory of Agricultural Meteorology,Nanjing University of Information Science & Technology,Nanjing 210044;School of Applied Meteorology,Nanjing University of Information Science & Technology,Nanjing 210044 |
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| Abstract: | As important factors affecting terrestrial ecosystems,organic carbon and nitrogen can maintain and enhance soil carbon and nitrogen reserves,which is the key to ecosystem productivity.Soil samples were taken in different altitudes in Purple Mountain,and organic carbon and total nitrogen content were determined using routine analytical methods.The results show that the soil organic carbon and nitrogen contents vary with covering vegetation,which is largest in mingled forest and smallest in meadow.The soil organic carbon and nitrogen increase with altitude,while the ratio of carbon to nitrogen decreases with altitude.Significant linear relationship exists between organic carbon and total nitrogen,which suggests that the nitrogen is mainly existed in soil organic matter in organic form.The study is hoped to provide scientific references for ecological and environmental protection in Purple Mountain. |
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| Keywords: | Purple Mountain different altitude soil organic matter total nitrogen |
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