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研究了苏南丘陵次生栎林中栓皮栎、枫香两树种蒸腾强度的时间、空间变化特征。结果表明：两树种展叶初期日变化为双峰型，生长期其余各月份均呈单峰型。两树种蒸腾强度月变化趋势一致，表现为６、７月份最大。栓皮栎最大月均蒸腾强度为１１７．２９ｇ／ｍ２·ｈ，枫香最大月均蒸腾强度为１１５．５８ｇ／ｍ２·ｈ。空间变化两树种均表现为：上层＞中层＞下层。
The temporal and spatial variation characteristics of transpiration intensity of Quercus variabilis and Liquidambar formosana in the secondary oak forest in southern Jiangsu hills were studied. The results showed that the diurnal changes of the two tree species were bimodal at the early stage of development, and the rest of the growing season showed a single peak. The monthly variation trend of transpiration intensity of the two species was the same, showing the largest in June and July. The maximum monthly transpiration intensity of Q. variabilis was 117.29g / m2 · h, and the maximum monthly transpiration intensity of Liquidambar formosana was 115.58g / m2 · h. Spatial variation of the two species are manifested as: upper> middle> lower.