• Aucun résultat trouvé

that of the

N/A
N/A
Protected

Academic year: 2021

Partager "that of the"

Copied!
1
0
0

Texte intégral

(1)

P.LL4 (will also be presented as poster pitch)

E Fouillet1,2, L Herrmann2, T Tham Nguyenl,',0, HT Thanh Nguyens, M Otieno2, S Zhong6, D Lesueur2, 7,8 1

AgroPa ri sTech, Po ris, F ro nce zctAT-Asia/ cMBP, Honoi, Viet Nom 3

Ko setsa

rt

tJ nive rsity, Bo n g kok, Th a il a n d

avietnom

Notional tJniversity of Agriculture, Honoi,

Viet

Nam

sNorthern Mountainaus Agriculture ond Forestry Science

lnstitute,

Honoi, Viet Nom 6Chinese Academy

of

Tropical

Agriculturol

Sciences, Haikou, China

TClRAD, UMR Eco&Sols, Montpellier, France sDeakin University, Melbourne, Austrolia

lndustrial agriculture

has

allowed

food

safety

through the crop

homogenization

and

the

massive

use of

pesticides and chemical fertilizers. This intensive agriculture has positively influenced

the

crop

productivity

but

has also negatively affected

the

environment

with

direct

consequences

on

soil

health

and

productivity.

The

importance

of the

micro

and macro organisms in

the

sustainability

of

soil

fertility

is

widely

recognized. Soil

fauna represents 23% of

the

global fauna and contributes

to

most of

the

ecosystem services such as porosity,

soil aggregation,

control

of

the

microbial activity and plant

protection

against pests and diseases. To mitigate

the

collateral effects

of

intensive agriculture on soil

productivity

in South East Asia, agro-ecological practices

are

currently promoted,

including

the

use

of

legumes

in

intercropping systems. We studied

the

effect

of

the

intercropping system cassava-cowpea (Vigno unguiculota L.) on the soil biotic compartment in Yen Bai province, a mountainous region in

the

North of Vietnam. lntercropping resulted in

the

increase

of

macro fauna richness

and

evenness.

lntercropping

system also significantly enhanced

both diversity

and abundance

of

soil

micro

fauna.

The

high throughput

sequencing analysis

of

the

microbial community showed

that

bacterial

communities' abundance and richness were significantly higher in intercropping system than in mono-cropping

fields.

However,

intercropping

did not

significantly

affect

the

fungal communities

and

the

soil

parameters

including pH and organic

matter. Our

results

highlight

the

importance

of the

promotion

of

agro ecological practices such as legume intercropping systems in

the

Highlands in Northern Vietnam where the sustainability of

the

ecosystem is very fragile.

P.115

XZhangl,NBilyera2,LFan3,PDuddeka,YKuzyakovs,MDippoldl,MAhmeda,SSpielvogel2,BSRazavi2

lDepartment of Biogeochemistry of Agraecosystems, tJniversity of Giittingen, Gottingen, Germany

2Department

of

Sail Science, lnstitute

of

Soil Science and Plant

Nutrition,

Christian-Albrechts-Universitdt zu Kiel, Kiel, Germony

3Deportment

of

Soil Science

of

Temperate Ecosystems, lJniversity of Gottingen, Gdttingen, Germony 4Chair

of

Soil Physics, lJniversity of Bayreuth, Bayreuth, Germany

stnstitute of Environmentol Sciences, Kazon Federal University, Kozon, Russio

Références

Documents relatifs

For active remote sensing, different studies have shown a considerable potential for the characterization of different soil parameters: moisture, roughness, and texture.. Active

The lack of differences in the lower layer of forest soils may be due to similar soil organic matter contents in all stands and very slight differences in soil organic matter quality,

Our result suggest that the variation of soil properties which is observed within the various vegetation units should partially be attributed to differences of geochemical

(ii) the capacity of a soil to adsorb water according to its clay content and therefore to reduce 31.. the surface active for O 3

The extended set of transfer parameter data was published in Handbook of Parameter Values for the Prediction of Radionuclide Transfer in Terrestrial and Freshwater

Yield of oats in the Zhitomir (sod-podzolic soil) and Kiev (chernozem) regions was 1.5–2.7 times higher, beetroot 2.2 times higher and potatoes 2 times higher than the yield of

Globally, soil erosion by water accounts for the greatest loss of soil directly associated with other global change drivers, like land use (e.g., clear-cutting, intensification

Here, we pre- sent our collective musings on soil research challenges and opportunities and, in particular, the points raised by Philippe Baveye (Baveye, 2020a, 2020b) and Johan