茶園不同水土保持處理下土壤流失量之評估

Evaluation of Soil Loss on Tea Plantation under Different Soil and Water Consrvation Practices

林俐玲(Li-Ling Lin) ； 胡自健(Tyzh-Jiann Hu)

《中華水土保持學報》 29卷3期 (1998/09) Pp. 249-260

https://doi.org/10.29417/JCSWC.199809_29(3).0007

摘要

高山茶為當前坡地農業高獲利作物之一，所以茶園在坡地所佔的面積相當廣大，確實做好水土保持，有效的評估土壤沖蝕是刻不容緩的工作。本研究結果顯示茶園以平台階段配合覆蓋與敷蓋處理能有效的控制水土流失量。本研究更利用修正版通用土壤流失公式（RUSLE）推估不同處理下茶園的土壤流失量，並收集實測資料驗證之，初步證明RUSLE模式可應用於茶園土壤流失量之推估。此外，本研究亦建立日月潭魚池試區的各種資料庫，其中降雨沖蝕指數R值計算為756，為USLE模式R值887之0.85倍左右，並且初步訂定出阿薩姆紅茶（Assam tea）一年生至十年生的覆蓋管理因子C值為0.14至0.04左右。

關鍵字

茶園 ； 修正版通用土壤流失公式 ； 平台階段 ； 覆蓋 ； 敷蓋 ； 水土流失

並列摘要

In recent years, intense development on steep slopes has resulted in rapid erosion and induced environment deterioration. Thorough assessment of the soil erosion problem is, therefore necessary to ensure proper slope development appropriate soil and water conservation practices. Bench terrace with cover and mulch is found to control soil and water losses effectively on tea plantation The Revised Universal Soil Loss Equation (RUSLE) is a new soil erosion prediction technology. The objective of this study is to evaluate the capability of RUSLE in predicting the soil erosion on hillslope. The soil loss predicted by RUSLE was validated with data collected from field experiments conducted at Yuchih Tea Experimental Station. The results indicated that RUSLE was able to predict adequately soil loss on tea plantation. The city, crop, and management database at Yuchih Tea Experimental Station have been constructed. The preliminary research results are: the Rindex is 756 and is approximately 0.85 times of that obtained by USLE. The C values range from 0.14 to 0.04 for the 1 to 10-year-old Assam tea plants.

並列關鍵字

tea plantation ； RUSLE ； bench terrace ； cover ； mulch ； soil and water loss