Soil erosion, dissolved organic carbon and nutrient losses under different land use systems in a small catchment in northern Vietnam
J.-L. Janeau
(1)
,
C. Gillard
,
S. Grellier
(2)
,
P. Jouquet
(3)
,
Thi Phuong Quynh Le
,
Thi Nguyet Minh Luu
(4)
,
Quoc Anh Ngo
(5)
,
D. Orange
(6)
,
Dinh Rinh Pham
,
Duc Toan Tran
(7)
,
Sy Hai Tran
,
Anh Duc Trinh
,
C. Valentin
(8)
,
E. Rochelle-Newall
(9)
1
SFRI -
Soils and Fertilizers Research Institute
2 VERI - Veolia Environnement Recherche et Innovation = Veolia Environnement Research and Innovation
3 Bioemco - Biogéochimie et écologie des milieux continentaux
4 UPMC - Université Pierre et Marie Curie - Paris 6
5 VAST - Vietnam Academy of Science and Technology
6 iEES Paris - Institut d'écologie et des sciences de l'environnement de Paris
7 LBMC UMR T9406 - Laboratoire de Biomécanique et Mécanique des Chocs
8 iEES - Institut d'écologie et des sciences de l'environnement de Paris
9 UR 103 Camélia
2 VERI - Veolia Environnement Recherche et Innovation = Veolia Environnement Research and Innovation
3 Bioemco - Biogéochimie et écologie des milieux continentaux
4 UPMC - Université Pierre et Marie Curie - Paris 6
5 VAST - Vietnam Academy of Science and Technology
6 iEES Paris - Institut d'écologie et des sciences de l'environnement de Paris
7 LBMC UMR T9406 - Laboratoire de Biomécanique et Mécanique des Chocs
8 iEES - Institut d'écologie et des sciences de l'environnement de Paris
9 UR 103 Camélia
C. Gillard
- Fonction : Auteur
Thi Phuong Quynh Le
- Fonction : Auteur
D. Orange
- Fonction : Auteur
- PersonId : 20826
- IdHAL : didier-orange
- ORCID : 0000-0001-8693-1778
- IdRef : 033169675
Dinh Rinh Pham
- Fonction : Auteur
Sy Hai Tran
- Fonction : Auteur
Anh Duc Trinh
- Fonction : Auteur
Résumé
The export of dissolved organic carbon (DOC) from agricultural soils can represent an important pathway of soil organic carbon loss. However, despite its importance in terrestrial and downstream aquatic ecosystems, most work has focused on temperate agrosystems with tropical and sub-tropical ecosystems being ignored. Here we present the results of a series of rain simulation experiments aimed at examining DOC export from sloping lands in North Vietnam. Three regularly used agricultural practices were tested and compared with Bare soils. We also compared the impact of leaf litter in two planted forest sites. We found high rates of DOC export (0.03-0.25 g C m(-2)) during a 40 min rain episode with the lowest rates observed in the Bare soils and the highest in the planted Forest without leaf litter. This is equivalent to a loss of between 0.001 and 0.008% of the total soil organic carbon in the upper 10 cm during a single, intense rain event. This work highlights the impact of different agricultural practices (Bare soil, hoeing, mulching and fallow) and land use (planted Forest with or without leaf litter) on the export of DOC from upland, tropical soils and further underlines the importance of studying DOC fluxes from agricultural land as it represents an important and highly mobile component of ecosystem carbon fluxes.
Domaines
Etudes de l'environnementFormat du dépôt | Notice |
---|---|
Type de dépôt | Article dans une revue |
Titre |
en
Soil erosion, dissolved organic carbon and nutrient losses under different land use systems in a small catchment in northern Vietnam
|
Résumé |
en
The export of dissolved organic carbon (DOC) from agricultural soils can represent an important pathway of soil organic carbon loss. However, despite its importance in terrestrial and downstream aquatic ecosystems, most work has focused on temperate agrosystems with tropical and sub-tropical ecosystems being ignored. Here we present the results of a series of rain simulation experiments aimed at examining DOC export from sloping lands in North Vietnam. Three regularly used agricultural practices were tested and compared with Bare soils. We also compared the impact of leaf litter in two planted forest sites. We found high rates of DOC export (0.03-0.25 g C m(-2)) during a 40 min rain episode with the lowest rates observed in the Bare soils and the highest in the planted Forest without leaf litter. This is equivalent to a loss of between 0.001 and 0.008% of the total soil organic carbon in the upper 10 cm during a single, intense rain event. This work highlights the impact of different agricultural practices (Bare soil, hoeing, mulching and fallow) and land use (planted Forest with or without leaf litter) on the export of DOC from upland, tropical soils and further underlines the importance of studying DOC fluxes from agricultural land as it represents an important and highly mobile component of ecosystem carbon fluxes.
|
Auteur(s) |
J.-L. Janeau
1
, C. Gillard
, S. Grellier
2
, P. Jouquet
3
, Thi Phuong Quynh Le
, Thi Nguyet Minh Luu
4
, Quoc Anh Ngo
5
, D. Orange
6
, Dinh Rinh Pham
, Duc Toan Tran
7
, Sy Hai Tran
, Anh Duc Trinh
, C. Valentin
8
, E. Rochelle-Newall
9
1
SFRI -
Soils and Fertilizers Research Institute
( 195933 )
- Hanoi
- Viêt Nam
2
VERI -
Veolia Environnement Recherche et Innovation = Veolia Environnement Research and Innovation
( 302157 )
- 21 rue de la Boétie – 75008 Paris 8 – France [ancienne adresse : Chemin de la Digue – 78603 Maisons Laffitte]
Nota : l'activité de la société s'exerce sur d'autres sites.
- France
3
Bioemco -
Biogéochimie et écologie des milieux continentaux
( 31573 )
- France
4
UPMC -
Université Pierre et Marie Curie - Paris 6
( 93591 )
- 4 place Jussieu - 75005 Paris
- France
5
VAST -
Vietnam Academy of Science and Technology
( 302598 )
- 18 Hoang Quoc Viet, Cay Giay, Ha Noi
- Viêt Nam
6
iEES Paris -
Institut d'écologie et des sciences de l'environnement de Paris
( 542077 )
- Sorbonne-Université, campus de Jussieu - Paris (75005) - AgroParisTech-INRA - Grignon (78) - INRA - Versailles (78) - IRD - Bondy (93) - UPEC - Créteil (94)
- France
7
LBMC UMR T9406 -
Laboratoire de Biomécanique et Mécanique des Chocs
( 222174 )
- 25, avenue François Mitterrand, Case24 Cité des mobilités F-69675 Bron Cedex
- France
8
iEES -
Institut d'écologie et des sciences de l'environnement de Paris
( 247213 )
- UPMC, campus de Jussieu - Paris (75005) - AgroParisTech-INRA - Grignon (78) - INRA - Versailles (78) - IRD - Bondy (93) - U-PEC - Créteil (94)
- France
9
UR 103 Camélia
( 63576 )
- Nouvelle-Calédonie
|
Audience |
Internationale
|
Comité de lecture |
Oui
|
Vulgarisation |
Non
|
Nom de la revue |
|
Langue du document |
Anglais
|
Volume |
146
|
Page/Identifiant |
314 - 323
|
Date de publication |
2014-12
|
URL éditeur |
http://www.journals.elsevier.com/agricultural-water-management/
|
Public visé |
Scientifique
|
Sous-type de document pour les Articles |
Research article
|
Domaine(s) |
|
Voir aussi |
|
Financement |
|
Indexation contrôlée |
|
Mots-clés |
en
Tropical catchments, Soil carbon loss, Acacia mangium, No-till
fr
Erosion, Rain simulations
|
DOI | 10.1016/j.agwat.2014.09.006 |
ProdINRA | 286754 |
UT key WOS | 000345815000030 |
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