Effects of agroecological practices on soil organic carbon sequestration using synchronic and diachronic approaches in Madagascar

Rakotovao, Narindra Harisoa; Ramifehiarivo, Nandrianina; Grinand, Clovis; Razakamanarivo, Herintsitohaina Ramarson; Albrecht, Alain; Razafimbelo, Tantely Maminiaina

dc.date.accessioned	2020-06-29T14:03:20Z
dc.date.available	2020-06-29T14:03:20Z
dc.date.issued	2020-06-16
dc.identifier	doi:10.17170/kobra-202005281299
dc.identifier.uri	http://hdl.handle.net/123456789/11609
dc.description	Gedruckte Ausgabe im Verlag kassel university press erschienen.	ger
dc.language.iso	eng	eng
dc.rights	Namensnennung 4.0 International	*
dc.rights.uri	http://creativecommons.org/licenses/by/4.0/	*
dc.subject	agroforestry	eng
dc.subject	compost	eng
dc.subject	MIRS	eng
dc.subject	sequestration rate	eng
dc.subject	tree plantation	eng
dc.subject.ddc	630
dc.title	Effects of agroecological practices on soil organic carbon sequestration using synchronic and diachronic approaches in Madagascar	eng
dc.type	Aufsatz
dcterms.abstract	Soil organic carbon (SOC) sequestration in agricultural systems is a key indicator of soil fertility improvement and climate change mitigation at the global scale. In Madagascar, the effect on SOC sequestration of converting from traditional practices to agroecological ones remains unclear. The objectives of this study were (i) to assess the impact of agroecological practices, such as agroforestry (AF), tree plantation (TP) and improved farming practices (IFPs), on SOC sequestration at the field level; and (ii) to use both synchronic and diachronic approaches to quantify SOC sequestration following the adoption of agroecological practices. For the diachronic approach, two sampling years (2014 and 2018) were used to assess the annual soil carbon sequestration rates with agroecological practices. For the synchronic approach, SOC sequestration arising from agroecological practices was compared to that on reference fields, such as fallow land (FL) and traditional farming practices (TFPs). Soil sampling were carried out on 36 fields with agroecological practices and 60 reference TFP and FL fields. The diachronic approach showed that SOC sequestration rates for AF, TP and IFPs were respectively, +2.8, +1.6 and -0.9 MgC.ha-1.yr-1. The synchronic approach showed that SOC stock in AF was higher (109.4 MgC.ha-1) than in reference TFP (73.8 MgC.ha-1) and FL (67.4 MgC.ha-1) fields. The SOC stock in IFP (74.8 MgC.ha-1) and TP (69 MgC.ha-1) presented no significant difference compared to reference fields. This study provided a better understanding of soil carbon dynamics at the farm level in Madagascar when agroecological practices are adopted in place of traditional practices.	eng
dcterms.accessRights	open access
dcterms.alternative	Impact of agroecological practices on soil organic carbon sequestration using synchronic and diachronic approaches in Madagascar	eng
dcterms.creator	Rakotovao, Narindra Harisoa
dcterms.creator	Ramifehiarivo, Nandrianina
dcterms.creator	Grinand, Clovis
dcterms.creator	Razakamanarivo, Herintsitohaina Ramarson
dcterms.creator	Albrecht, Alain
dcterms.creator	Razafimbelo, Tantely Maminiaina
dc.subject.swd	Agroforstwirtschaft	ger
dc.subject.swd	Sequestrierung	ger
dc.subject.swd	Kompost	ger
dc.subject.swd	Baumpflanzung	ger
dc.subject.swd	Madagascar	ger
dc.type.version	publishedVersion
dcterms.source.identifier	EISSN 2363-6033
dcterms.source.issue	No. 1
dcterms.source.journal	Journal of Agriculture and Rural Development in the Tropics and Subtropics (JARTS)	eng
dcterms.source.pageinfo	113-125
dcterms.source.volume	Vol. 121
kup.iskup	false