摘要
气孔导度是影响作物蒸散和作物的光合速率进而影响作物产量的重要因子。文中通过利用NOAA－AVHRR数据首次对华北平原典型区冬小麦气孔导度分布进行了研究，给出了华北平原典型区冬小麦不同生长季节的气孔导度空间分布状况，为进一步研究田间水分和作物蒸散对产量影响以及建立遥感作物水分胁迫生物量模型和监测不同生育期的农田缺水等提供依据。
The leaf stomatal movement, a physiological process, occurs within leaves but its influence on fluxes CO2, water vapor, and sensible heat extends to canopy, regional,and global scales. The theoretical and laboratory studies document that the interaction between leaf photosynthesis and stomatal conductance is obvious, thus stomatal conduc-tance is an important factor influencing on crop photosynthetic rate and crop net primary product, in special in the condition of crop water deficit. In the paper, based on the re-mote sensing information from NOAA-AVHRR and meteorological data, stomatal con-ductance distribution of winter wheat in typical area of North China plain have been studied. The stomatal conductance diagram in different development period has been presented. The developed stomatal conductance methods have been used to study crop and field moisture and estimate the winter wheat yield in typical research area of North China Plain. This will help us much better estimate NPP model influenced by water deficit and drought in the near further.
出处
《气象学报》
CSCD
北大核心
2000年第3期347-353,共7页
Acta Meteorologica Sinica
基金
国家基础研究发展规划项目!G1999043400
国家自然科学基金!39900084
关键词
遥感信息
华北平原
冬小麦
气孔导度
时空分布
Remote sensing information, Winter wheat, Stomatal conductance,North China plain
