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标题

土壤侵蚀对陆地生态系统碳源汇的影响

作者

崔利论 袁文平 张海成

机构

中国科学院西北生态环境资源研究院冰冻圈科学国家重点实验室; 北京师范大学地表过程与资源生态国家重点实验室

摘要

土壤侵蚀和沉积作用可导致土壤有机碳在空间上发生水平迁移, 从而改变植被生产力和土壤呼吸作用,显著影响生态系统碳源汇的空间格局。文章介绍了国内外相关的研究结果,综述了土壤侵蚀对生态系统碳源汇的影响,并着重分析了EDCM(Erosion Deposition Carbon Model)即侵蚀沉降碳模型等相关的土壤有机碳迁移和沉积模型。当前的研究倾向于土壤侵蚀是“碳汇”,但由于土壤有机碳动态变化受到多种因素的同时影响及对土壤侵蚀大范围长时间测定的不确定性, 所以对土壤侵蚀“碳源” “碳汇”的讨论仍存在很大的争议。当前的土壤有机碳迁移和沉积模型由于开发者侧重点的不同,应用区域有限,有待进一步优化,应加强参数区域化和尺度转换方面的研究,扩大模型适用范围。

关键词

碳源汇;碳水平迁移;土壤侵蚀

引用

崔利论 袁文平 张海成. 土壤侵蚀对陆地生态系统碳源汇的影响.[J]. 北京师范大学学报(自然科学版),2016,52(6):816-822.

基金

国家自然科学基金优秀青年科学基金资助项目(41322005);中国科学院百人计划资助项目(Y329k71002);中国科学院重点资助项目(KJZD-EW-G03-04)

分类号

S157.1

DOI

10.16360/j.cnki.jbnuns.2016.06.020

Title

Soil Erosion Effect on Terrestial Ecosystem Carbon Source and Sink

Author

CUI Lilun YUAN Wenping ZHANG Haicheng

Affiliations

Northwest Institute of Eco-Environment and Resources, CAS, University of Chinese Academy of Sciences; State Key Laboratory of Earth Surface Processes and Resource Ecology, Beijing Normal University

Abstract

Soil erosion and deposition induces substantial lateral redistribution of SOC, this will change vegetation productivity and soil respiration, to have profound effect on carbon budget of terrestrial ecosystems. The aim of this work is to summarize current researches in this field and evaluate effect of soil erosion on carbon budget of terrestrial ecosystems, and to analyze EDCM and other related SOC migration and deposition models. However, it is difficult to make a clear statement of erosion effect on SOC dynamics, as there are many factors affecting SOC dynamics and it is difficult to measure long term erosion effect on SOC redistribution. Current models of migration and deposition of soil organic carbon from different developers have varied focus, this limits the application area. Further optimizations are needed. Parameter regionalization and scaling studies should be strengthened and the scope of model applications needs to be expanded.

Key words

carbon source and sink; lateral movement of carbon; soil erosion

cite

CUI Lilun YUAN Wenping ZHANG Haicheng. Soil Erosion Effect on Terrestial Ecosystem Carbon Source and Sink [J]. Journal of Beijing Normal University (Natural Science), 2016,52(6):816-822.

DOI

10.16360/j.cnki.jbnuns.2016.06.020

Copyright © 2014 Journal of Beijing Normal University (Natural Science)
Designed by Mr. Sun Chumin. Email: cmsun@mail.bnu.edu.cn