A model to estimate annual forest evapotranspiration in Japan from mean annual temperature

Hikaru Komatsu, Eiichi Maita, Kyoichi Otsuki

研究成果: Contribution to journalArticle査読

47 被引用数 (Scopus)

抄録

In Japan, forested areas are usually located upstream of urban and agricultural areas. Estimating annual water yield from such forested areas is therefore crucial for water resources management. For this purpose, estimating annual forest evapotranspiration is required. We developed an empirical model for estimating annual forest evapotranspiration E in Japan based on 43 catchment water balance datasets summarized from earlier publications. The model formulated E as E (mm) = 31.4T (°C) + 376, where T is mean annual air temperature. This model estimated E observed in forest catchments with an average 6% error relative to incident annual precipitation. This error was comparable to or smaller than the error included in precipitation data due to the spatial heterogeneity of precipitation. High-quality air temperature data are commonly available in Japan, thus this model is a practical tool for annual water yield estimates from forested areas and therefore water resources management.

本文言語英語
ページ(範囲)330-340
ページ数11
ジャーナルJournal of Hydrology
348
3-4
DOI
出版ステータス出版済み - 1 15 2008

All Science Journal Classification (ASJC) codes

  • 水の科学と技術

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