Global Patterns of Energy Efficiency of Terrestrial Productivity

DOI Web Site Web Site 参考文献7件
  • OHTA Shunji
    Department of Human Behavior and Environment Sciences, Faculty of Human Sciences, Waseda University

この論文をさがす

抄録

This paper describes current patterns of net primary productivity (NPP) and radiation use efficiency (RUE) of terrestrial vegetation of the world. Geographical patterns of NPP showed little productivity in areas with a shortage of climate resources, mainly in high latitudes, high altitudes and arid areas. Potential total net production (TNP) was evaluated to be about 53.2×109 tC year-1 with a total land area of 129.1×108 ha excluding Antarctica. Annual shortwave radiation absorbed at the whole terrestrial area has reached 7.2×1014 GJ. Using this value and the potential TNP in the whole continental area, the world mean of annual RUE in the total for land surface was estimated to be 0.24%. The latitudinal gradient in RUE during the growing period revealed that higher efficiency was in low and high latitudes, which were dominated by tropical rain forests and conifer forests. In contrast, deciduous broad-leaved forests and temperate or tropical grasslands in the mid-latitudes were of efficiency at lower converting the useable solar radiation into biomass, owing mainly to decreased precipitation and the resulting decrease in available water.

収録刊行物

  • 農業気象

    農業気象 60 (5), 861-864, 2005

    日本農業気象学会

参考文献 (7)*注記

もっと見る

関連プロジェクト

もっと見る

キーワード

詳細情報 詳細情報について

問題の指摘

ページトップへ