Agricultural soil erosion and global carbon cycle: controversy over?

被引：125

作者：

Kuhn, Nikolaus J. ^{[1
]}

Hoffmann, Thomas ^{[2
]}

Schwanghart, Wolfgang ^{[1
]}

Dotterweich, Markus ^{[3
]}

机构：

[1] Univ Basel, Dept Environm Sci, Basel, Switzerland

[2] Univ Bonn, Dept Geog, D-5300 Bonn, Germany

[3] Univ Koblenz Landau, Inst Environm Sci, Landau, Germany

来源：

EARTH SURFACE PROCESSES AND LANDFORMS | 2009年 / 34卷 / 07期

关键词：

soil erosion; agricultural land; global carbon cycle; eco-geomorphology; ORGANIC-CARBON; INTERRILL EROSION; WATER EROSION; LAND-USE; SEQUESTRATION; IMPACT; ERODIBILITY; DEPOSITION; DYNAMICS; SLOPES;

D O I：

10.1002/esp.1796

中图分类号：

P9 [自然地理学];

学科分类号：

0705 ; 070501 ;

摘要：

Recent research on the contribution of soil erosion on agricultural land to atmospheric carbon dioxide (CO2) emphasizes either the contribution of soil organic matter (SOM) mineralization during transport as source for atmospheric CO2 or the deep burial of SOM-rich sediment in agricultural landscapes as a sink. The contribution of either process is subject to a controversial debate. In this letter, we present preliminary results on our research on interrill carbon (C) erosion, SOM transport by rill erosion and the stationarity of C erosion during the Holocene. None of those issues has been incorporated comprehensively and with global coverage in the debate on the role of C erosion in the global C cycle. Therefore, we argue that only an eco-geomorphologic perspective on organic C movement through landscapes can reconcile the two positions. Copyright (C) 2009 John Wiley & Sons, Ltd.

引用

页码：1033 / 1038

页数：6

共 40 条

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