干旱区生态环境知识资源中心

In this study soil temperatures were measured 1 mm below the soil surface by microsensors in three locations on the matrix and in depressions on a natural area near a flat loess of Sede Boker in the Negev and recorded daily every 10 min. In this area many seeds of desert annual’s seed banks germinate on or close to the soil surface. Temperatures over 2 days in the spring, one with rain, were compared with 2 hot days during a ’hamsin’ at the beginning of summer. Temperatures in these microhabitats may affect the spread of germination over time according to seed location during storage and germination. (C) 1997 Academic Press Limited.