| Summary: | 碩士 === 國立中興大學 === 水土保持學系 === 86 === ABSTRACT
The objective of this study was to examine the influences of
different landuses and water quality at slopeland area
along Ali-shan highway . The experiments were carried out
to compare the differences in infiltration, soil
physical and chemical properties, water quality at sites
with various covers(forests, bamboo, tea, betel-nut marstard)
1.The final infiltration rates for the different agricultural
crops planting areas are compared as follows:
(1)Forest District #3:
forest＞marstard.
(2)Forest District #7:
forest＞marstard.
(3)Forest District #146:
bamboo＞tea bare ground.
(4)Forest District #151:
forest＞betel-nut＞tea.
2.The regression equations relating infiltration rates(mm/min)
are listed below:
(1)Forest District #3:
forest: F = 6.714 + 7.103 * e-0.0302t
marstard: F = 2.010 + 2.865 * e-0.0896t
(2) Forest District #7:
forest: F = 6.310 + 7.895 * e-0.0420t
marstard: F = 1.897 + 3.305 * e-0.0221t
(3) Forest District #146:
bamboo: F = 7.343 + 18.413 * e-0.0248t
tea: F = 5.945 + 16.890 * e-0.0480t
bare ground: F = 1.238 + 4.835 * e-0.0578t
(4) Forest District #151:
forest: F = 14.179 + 5.846 * e-0.0200t
bamboo: F = 13.335 + 6.398 * e-0.0177t
betel-nut: F = 5.418 + 19.327 * e-0.0428t
tea: F = 2.406 + 9.008 * e-0.0493t
3.The water regulation capacities of soils as related to
macropore contents, are compared for various landuses
as follows: forest＞bamboo＞betel nut＞tea＞
marstard 4.Planting of
agricultural crops caused degradation of water.
This is especially true for marstard site with E.C., total P and
COD of water significantly higher than those from forest sites.
Keywords: Ali-shan highway ,landuses ,infiltration rate,water
quality,betel-nut,,marstard
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