In:
Revista Brasileira de Engenharia Agrícola e Ambiental, FapUNIFESP (SciELO), Vol. 17, No. 2 ( 2013-02), p. 162-169
Abstract:
In the watershed of the Timboteua and Buiuna streams in the State of Pará, the effect of land use change and soil management on the runoff rates was evaluated. Eighteen experimental plots (1 m²) were established, three in each one of the six evaluated agroecosystems as follows: i) 20 years Secondary vegetation ("Capoeira") (CP), ii) Agroforestry system / slash-and-burn (SQ), iii) Agroforestry system / chop-and-mulch (ST), iv) Cassava crop / chop-and-mulch (RT), v) Cassava crop / slash-and-burn (RQ), vi) Cattle pasture / slash-and-burn (PQ). Nearby these plots two rain gauges and three rainwater collectors for monitoring of precipitation were also installed. Along 2010 rainy season 234 samples were collected on 26 different dates. A strong correlation was found between precipitation and runoff, being the highest value of 54.53% of total volume of superficial flow for Cattle pasture degraded and lowest of 1.11% for Agroforestry system that was under recovery for 7 years after burning. The runoff decreased in agroecosystems with lower percentage of organic material in relation to systems with higher percentage.
Type of Medium:
Online Resource
ISSN:
1415-4366
DOI:
10.1590/S1415-43662013000200007
Language:
Unknown
Publisher:
FapUNIFESP (SciELO)
Publication Date:
2013
detail.hit.zdb_id:
2164420-2
