Utilization of near infrared reflectance spectroscopy (NIRS) to quantify the impact of earthworms on soil and carbon erosion in steep slope ecosystem: A study case in Northern Vietnam |
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Authors: | Pascal Jouquet Thierry Henry-des-Tureaux Jérôme Mathieu Thuy Doan Thu Toan Tran Duc Didier Orange |
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Affiliation: | 1. SFRI – IWMI – IRD, Dong Ngac, Tu Liem, Hanoï, Vietnam;2. IRD, UMR 211 Bioemco, Equipe Transferts, Centre IRD Bondy, 32 Avenue H. Varagnat, 93143 Bondy Cedex, France;3. UPMC – UMR 7618 Bioemco, NCEAS, 735 State Street, Santa Barbara, 93101-5504 California, USA |
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Abstract: | This work focuses on a new approach to quantify the effects of above-ground earthworm's activity on soil erosion in steep slope ecosystems such as in Northern Vietnam. In these areas and in many others in the world, soil erosion becomes a major issue while the factors that determine it are still misunderstood. Earthworm's activity is believed to influence soil erosion rate, but we are still unable to precisely quantify their contribution to soil erosion. In this study, we used Near Infrared Reflectance Spectroscopy (NIRS) to quantify the proportion of soil aggregate in eroded soil coming from earthworm activity. This was done by generating NIRS signatures corresponding to different soil surface aggregates (above-ground soil casts produced by earthworms vs. surrounding topsoil). |
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Keywords: | Soil erosion Carbon loss Earthworm activity Near Infrared Reflectance Spectroscopy Vietnam Amynthas khami |
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