頁籤選單縮合
題名 | Hydrological Characteristics of a Makino Bamboo Woodland in Central Taiwan=臺灣中部地區桂竹林水文特性之研究 |
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作者姓名(中文) | 陸象豫; 劉瓊霦; 黃良鑫; 王秋嫻; | 書刊名 | 臺灣林業科學 |
卷期 | 22:1 2007.03[民96.03] |
頁次 | 頁81-93 |
分類號 | 436.19 |
關鍵詞 | 桂竹; 枯枝落葉; 水文特性; Makino bamboo; Litterfall; Hydrological characteristics; |
語文 | 英文(English) |
中文摘要 | 本研究以廣泛分布於台灣中北部低海拔山區的桂竹林為對象,於1999至2004年期間,調查林業試驗所蓮華池研究中心桂竹林之枯枝落葉量,探討截留、入滲、蒸發散及次地表逕流等水文特性,並與天然闊葉林、檳榔園及杉木林上述特性相比較。研究結果獲知,桂竹林的落葉高峰期為4至5月,每年枯枝落葉量分別約為4.66 ton ha-1,較天然闊葉林之7.98 ton ha-1為低。降雨截留量及幹流量分別佔年降雨總量之13.6及4.6%,均稍許較天然闊葉林的截留量與幹流量為高。由簡易滲漏計所得之蒸發散量約為4.56 mm day-1,可視為推估野外大面積桂竹林蒸發散量之參考。最終與起始入滲率分別為0.20與2.15 cm min-1,入滲容量較檳榔園及杉木林為高。由於根系分布及陡坡的雙重因素,超過95%的次地表逕流來自表土30 cm以內的土層,且快速流中心與暴雨中心相差僅約1.5~4.0 h。 |
英文摘要 | Hydrological characteristics of litterfall, interception, infiltration, evapotranspiration, and subsurface runoff of a makino bamboo (Phyllostachys makinoi Hayata) woodland, a special forest type found mainly on mid-elevation slopelands from the central to the northern part of Taiwan, in the Lienhuachih Research Center of Taiwan Forestry Research Institute were investigated during the period 1999 to 2004 and compared with those of natural hardwood forests and other major vegetation cover types in Taiwan. Results of the investigation indicated that the peak of litterfall for the makino bamboo woodland was from April to May. The average yearly litterfall was 4.66 ton ha-1 yr-1, which is relatively low in comparison to that of a natural hardwood forest (7.98 ton ha-1 yr-1). The estimated average annual interception loss was 13.6% of gross rainfall, and the average stemflow ratio was 4.6%. Both of the ratios are slightly higher than those of a natural hardwood forest owing to the special structure of the canopy and the smoother bark of culms in the makino bamboo woodland. Estimated daily average evapotranspiration was about 4.56 mm day-1 as detemined with a simplified lysimeter. The final and initial infiltration rates were respectively as 0.20 and 2.15 cm min-1. The infiltration capacity is higher than those of betelnut and China fir plantations. More than 95% of the subsurface runoff, the main component of quickflow, came from the top 30-cm layer of the soil profile due to abundant quick pathways associated with roots in that layer and the steep slope. The quickflow often appeared during the same day as precipitation with a1.5~4.0 h time lag between peaks of rainfall and quickflow. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。