| 基于地统计学和15N技术的湿地土壤氮素
空间运移理论探讨 |
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| 作者姓名： | 孙志高 刘景双 姜艳艳 王金达 |
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| 作者单位： | 中国科学院东北地理与农业生态研究所，中国科学院东北地理与农业生态研究所，北京师范大学资源学院，中国科学院东北地理与农业生态研究所 长春130012中国科学院研究生院，北京100039，长春130012，北京100875，长春130012 |
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| 基金项目： | 中国科学院知识创新工程重要方向项目(KZCX3-SW-332)、中国科学院知识创新工程重大项目专题(KZCX1-SW-01)和国家自然科学基金项目(90211003)资助. |
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| 摘 要： | 地统计学是探讨自然环境要素空间异质性的有效工具,它适合于定量研究区域化变量的空间结构变异特征。湿地土壤氮素是时空连续的变异体,不论尺度大小均具有高度的空间异质性,而其变量又属于区域化变量,同时具有随机性和结构性特征。因15N示踪技术能够示踪氮素物质的踪迹,而用15N标记的示踪体在湿地土壤中运移时所产生的丰度变化又具有空间异质性,故可考虑将二者结合起来来定量探讨湿地土壤氮素的空间运移。在此,就试对这一问题进行了较为系统和完整的理论探讨。
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| 关 键 词： | 地统计学 15N示踪技术 空间异质性 湿地 |
A Theory Study on Soil Nitrogen Spatial Movement in Wetland Based on Geostatistics
and 15N Trace Technique |
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| Authors: | Sun Zhigao Liu Jingshuang Jiang Yanyan Wang Jinda |
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| Institution: | (1Northeast institute of geography and agricultural ecology, CAS. Changchun, 130012; 2Graduate School of Chinese academy science, Beijing 100039; 3Beijing Normal University College of Resources Science, Beijing 100875) |
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| Abstract: | Geostatistics is an effective tool to study the spatial heterogeneity of elements; it is suited to research quantitatively the characters of spatial structure variation of regionalized variable. The soil nitrogen in wetland is spatial and temporal successive variant, with higher spatial heterogeneity in any scale. The variable of soil nitrogen in wetland belongs to regionalized variable with its characters of randomness and constructive property. Because 15N trace technique can trace the movement track of nitrogen, and the changes of 15N abundance caused by the movement of 15N trace matter in wetland soil have spatial heterogeneity, we can combine Geostatistics with 15N trace technique to study quantitatively soil nitrogen spatial movement in wetland. In this paper, the author tries to have relative system and integrity theory study on this question. |
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| Keywords: | Geostatistics 15N trace technique Spatial heterogeneity Wetland |
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