Titre :
|
Role of some riparian wetland plants in reducing erosion of organic carbon and selected cations
|
Auteurs :
|
R. Kumar ;
R. Ambasht ;
A. Srivastava ;
AL Et
|
Type de document :
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article/chapitre/communication
|
Année de publication :
|
1996
|
Format :
|
p. 227-239
|
Langues:
|
= Anglais
|
Catégories :
|
SCIENCES FONDAMENTALES ET APPLIQUEES
|
Mots-clés:
|
RIPISYLVE
;
PLANTE ANTIEROSIVE
;
NUTRIMENT
;
CONSERVATION DES SOLS
|
Résumé :
|
Five riparian herbaceous plants, dominant on the banks of the Rihand river at Renukoot (India), were selected to assess experimentally their quantitative role in conserving organic-C, Na, K and Ca. Young seedlings from the river bank were planted on sloping experimental plots made of alluvial soil. Simulated rainfall totalling 42.5 mm was applied at 300 mm h(-1) on five vegetated and one bare plots. Runoff water and eroded soil were collected from each experimental plot in artificial reservoirs and their quantities were measured. The soil conservation value of the five selected species ranged between 33 and 84% while the water conservation value varied between 19 and 50%. The overall nutrient conservation value, based on the losses in runoff water and eroded soil taken together, varied from 30 to 83% for organic-C, 19 to 78% for Na, 13 to 72% for K and 29 to 52% for Ca under different species. Loss of these four nutrients in response to 42.5 mm simulated rainfall was much higher than their input through rainfall.
|
Source :
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Ecological engineering, vol.6
|