Influences of Different Landuses on Infiltration and Water Quality at Slopeland Area along ALI-shan Highway

• Main Authors: Su, Jeng-Yen, 蘇正炎
• Other Authors: Ching-Zui Lee, Hao-Jung Shieh
• Format: Others
• Language: zh-TW
• Published: 1998
• Online Access: http://ndltd.ncl.edu.tw/handle/91401986731208756230

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