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effect of land-use practice on soil moisture variability for soils covered with dense forest vegetation of puerto ricoLittle is known about the landuse management effect on soil moisture and soil pH distribution on a landscape covered with dense tropical forest vegetation. This study was conducted at three locations where the history of the landuse management is different. Soil moisture was measured using a 6-cm three-rod Time Domain Reflectometery (TDR) probe. Disturbed soil samples were taken from the top 5-cm at the up, mid, and foothill landscape position from the same spots where soil moisture was measured. The results showed that soil moisture varies with landscape position and depth at all three locations. Soil pH and moisture variability were found to be affected by the change in landuse management and landscape position. Soil moisture distribution usually expected to be relatively higher in the foothill (P3) area of these forests than the uphill (P1) position. However, our results indicated that in the Luquillo and Guanica site the surface soil moisture was significantly higher for P1 than P3 position. These suggest that the surface and subsurface drainage in these two sites may have been poor due to the nature of soil formation and type.
Document ID
20000032232
Document Type
Conference Paper
Authors
Tsegaye, T.
(Alabama A & M Univ. Normal, AL United States)
Coleman, T.
(Alabama A & M Univ. Normal, AL United States)
Senwo, Z.
(Alabama A & M Univ. Normal, AL United States)
Shaffer, D.
(Puerto Rico Univ. San Juan, Puerto Rico)
Zou, X.
(Puerto Rico Univ. San Juan, Puerto Rico)
Date Acquired
August 19, 2013
Publication Date
February 28, 1998
Publication Information
Publication: NASA University Research Centers Technical Advances in Aeronautics, Space Sciences and Technology, Earth Systems Sciences, Global Hydrology, and Education
Volume: 2 and 3
Subject Category
Earth Resources and Remote Sensing
Funding Number(s)
CONTRACT_GRANT: NCC8-140
CONTRACT_GRANT: NCCW-84
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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