Establishment of Proper Land-use Assessment and Management Strategy for Deji Reservoir Catchment, Taiwan
Establishment of Proper Land-use Assessment and Management Strategy for Deji Reservoir Catchment, Taiwan
复制标题
为台湾德吉水库流域制定适当的土地利用评估和管理策略
DOI：
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发表时间：
2009
期刊：
影响因子：
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通讯作者：
T. Guo
中科院分区：
文献类型：
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作者：
Li;Zue;T. Guo
德基水库位于台湾中部，大甲溪上游集水区，面积60,160多公顷。堤坝高180米，是台湾最高的混凝土拱坝。这座大坝蓄水17亿立方米的有效水量。它每年提供超过3.7亿千瓦时的电力。它还是防洪、水电、灌溉、公共供水等的重要设施。72%的地形在2000-3000米的高度，5.2%的地形在3200米以上。超过59%的区域被55%的陡峭地形所覆盖。仅有7.9%的区域具有坡度小于30%的缓坡，这些缓坡位于海拔1500~2500米的干流两岸之间，大部分缓坡用于温带水果、蔬菜和茶叶种植园。这一土地用途立即毗邻水库集水区，对山区环境造成了巨大的影响。这项研究回顾了人类开发的土地利用区域，以适当地处理和评估减轻对水库影响的标准。初步调查提出了坡度、坡面移动类型和过程、距水库距离、开发区位置、与农道距离等参数。我们把重点放在区分不良土地使用的地形类型上。分析了一种不同的土地利用管理策略。
Deji Reservoir is situated in the middle of Taiwan on the upstream catchment of the Dajia stream with an area of over 60,160 ha. The embankment stands 180 m high and is the tallest concrete arch dam in Taiwan. This dam stores 1.7 billion cubic meters of valid volume water. It provides over 370 million kilowatt-hours of electricity annually. It is also an important facility for operating flood control, hydroelectricity, irrigation, public water supply, etc. Seventy-two percent of the terrain is at 2,000- to 3,000-m altitude, and 5.2% is above 3,200-m altitude. More than 59% of the area is covered with steep topography of 55% slope. Only 7.9% of the area is shown with gentle slopes of less than 30% slope, which are located among the two banks of main streams with the altitudes ranging from 1,500 to 2,500 m. Most of the gentle slopes are used for temperate zone fruit, vegetable, and tea plantations. This land-use immediately adjoins a reservoir catchment region, resulting in an enormous impact on the mountainous environment. This study reviewed human-developed land-use area to properly address and evaluate norms for mitigating the impacts on the reservoir. The initial investigation brought up the parameters of gradient, slope movement types and processes, distance to the reservoir, location of developed area and distance with the farm road, etc. Local investigation and global information system technology were conducted in this research. We focused on segregating the terrain types of indisposed land-use. A different land-use management strategy is also analyzed.