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language
eng
Author
AFLIZAR Faculty of Life and Environmental Science, Shimane University
SAIDI, Amirizal Faculty of Agriculture, Andalas University
HUSNAIN Faculty of Life and Environmental Science, Shimane University
ISMAWARDI National Polytechnic of Agriculture Payakumbuh
ISTIJONO, Bambang National Polytechnic of Agriculture Payakumbuh
HARMAILIS Faculty of Agriculture, Andalas University
SOMURA, Hiroaki Faculty of Life and Environmental Science, Shimane University
WAKATSUKI, Toshiyuki Faculty of Agriculture, Kinki University
Description
In the present study, we provide a land use planning recommendation for land conservation and agro-economical production for the Sumani watershed in West Sumatra, Indonesia, where intensive agriculture has long been practiced. We based our land conservation management recommendations on soil erosion rates using the Universal Soil Loss Equation (USLE) determined in our previous paper (Aflizar et al. 2010). Our land use planning vision is to maintain current land use practices as much as possible. In sites where the soil erosion rate remains less than the tolerable erosion rate (TER) (14 Mg ha-1 y-1; a rate set by the Indonesian government) land use was not altered. When soil erosion rates exceeded the TER, we selected a new land use with a smaller CP-factor than the former land practice to reduce soil erosion rates. The recommended land use planning resulted in a 16.1% change distributed as follows: vegetable gardens with terracing (10%), vegetable gardens with contour cropping (1.8%) and sawah (4.3%). The changes made in the recommended land use plans could reduce soil erosion rates by 88%, a reduction from 58.9 to 7.1 Mg ha-1 y-1, with a total profit loss in agricultural production of only 3.9% in the Sumani watershed.
Subject
recommended land use
soil erosion
USLE
Journal Title
Tropics
Volume
19
Issue
1
Start Page
43
End Page
51
ISSN
0917-415X
ISSN(Online)
1882-5729
Published Date
2010-11-01
DOI
Publisher
日本熱帯生態学会
Publisher Transcription
ニホン ネッタイ セイタイ ガッカイ
Publisher Aalternative
The Japan Society of Tropical Ecology
NII Type
Journal Article
Gyoseki ID
e11757
OAI-PMH Set
Faculty of Life and Environmental Science
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