頁籤選單縮合
題名 | 蓮華池地區陡坡地栽植檳榔對土壤水文性質與沖蝕性之影響 |
---|---|
作者 | 胡蘇澄; | 書刊名 | 林業試驗所研究報告季刊 |
卷期 | 8:4 1993.12[民82.12] |
頁次 | 頁271-276 |
分類號 | 434.227 |
關鍵詞 | 檳榔; 土壤沖蝕性; 土壤水文性質; 陡坡地; 蓮華池; 水里溪集水區; Betel palm; Soil erodibility; Soil hydrological property; Steep slope; Lien-hua-chi; Sui-li-chi watershed; |
語文 | 中文(Chinese) |
中文摘要 | 為明瞭南投水里溪集水區上游蓮華池地區栽植檳榔對土壤水文性質與 土壤沖蝕性之影響,以及提供土地利用規劃及水土保持處理之基本資料,經於該 地區陡坡地天然闊葉林(A)、杉木林(B)、幼齡檳榔園(C)及成齡檳榔園(D)以及測 滲計之杉木小區(E1)、檳榔小區(E2)及雜草小區(E3),分別採集土壤樣本,在室 內測定分析其水文及物理性質,藉以比較其差異,並以Wischmeier土壤沖蝕性 線解圖推定各樣區土壤之相對沖蝕性。結果獲知上述A、B、C、D四處樣區土 壤孔隙度均在50%以上,有助入滲及地表下水分移動;土壤之保水容量亦大,在 1/3bar時,土壤水分含量達35%以上,且最大含水量均大於65%;土壤有機質含 量均高,在4.41-7.11%之間,其中幼齡檳榔園土壤有機質含量最低,似與開墾種 植檳榔有關;土壤水穩性團粒粒徑平均值在7.8-14.5mm之間,顯示土壤之相對 抗蝕力甚高。又天然林地、杉木林地及成齡檳榔園之土壤沖蝕性K值皆低於 0.20,屬低沖蝕性土壤;而幼齡檳榔園土壤之K值為0.34,較前三者為高,屬中 沖蝕性土壤。測滲計三小區之土壤容重、孔隙度及保水容量差異小;土壤有機質 含量差異較明顯,以檳榔小區最低,與栽植檳榔清除地面有機物有關;杉木小區 及檳榔小區土壤之K值低於0.20,屬低沖蝕性土壤;雜草小區土壤之K值為 0.25,屬中沖蝕性土壤。 |
英文摘要 | Field soils on steep hillslopes covered by natural hardwoods, China-fir and young and old betel palms and soils in the lysimeter with three small plots planted with China-fir, betel palm and weeds in Lien-hua-chi area, upstream of Sui-li-chi watershed in central Taiwan, were sampled for laboratory analyses to determine the effects of different land uses on their hydrological properties and to estimate their erodibility (K values) using Wischmeier and associates nomograph. The results show that the porosity of the field soils studied was higher than 50%, indicating high infiltration and water-holding capacity. Soil moisture contents at 1/3 bar were more than 35% and the maximum water contents of the soils were over 65%. The organic matter contents in the soils ranged from 4.41-7.11%. The lowest one was measured at the young betel palm soils. This could be caused by conversion of China-fir to betel palms. The sizes of water-stable aggregates of the soils ranged from 7.8 to 14.5 mm and thus may provide high resistance to water erosion. The K values of both soils at natural hardwoods and China-fir stand were lower than 0.20 while that of soils at betel palm was 0.34, the highest. The plot soils in the lysimeter had small differences in bulk density, porosity and water-holding capacity. The differences in organic matter contents were quite significant and the lowest was measured at the betel palm plot which was cleared for planting in July 1990. The K values of both soils at China-fir and betel palm plots were lower than 0.20 while that of soils at weeds plot was 0.25. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。