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采用迳流小区研究了湘中丘陵不同林分结构的水土流失特征。结果表明，不同林分结构水土流失形式、产流过程、保水护土效益各异，以保水护土效益的大小将研究的６个林分结构进行排序：封山育林林分＞乔灌草结构＞乔草结构＞乔灌结构＞灌种结构＞乔种结构。
This paper studied the characteristics of soil and water loss in different stands in the hilly area of Central Hunan Province by using a streamflow plot. The results showed that the structure of soil and water loss, runoff process and water and soil conservation benefit differed among different stands, and the order of the six stands was classified according to the benefit of water and soil conservation. Grass structure> Arbor structure> Shrub structure> Arbor structure.