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本文研究了南洞庭湖杨树清理1 a、2 a后的迹地（简称1 a和2 a）和未清理杨树洲滩（ck）涨水前后土壤种子库特征变化及其与地上植被的关系.结果显示：杨树清理迹地土壤种子库共萌发物种23科59属65种，涨水前后土壤种子库密度和种类均表现出1 a > 2 a > ck的趋势，且随着土层加深而递减.退水后ck、1 a、2 a不同土层物种数量和密度较涨水前均有所减少，其中一或二年生物种较涨水前有所减少...
Parameterization of a coupled CO2 and H2O gas exchange model at the leaf scale of Populus euphratica
Parameterization coupled CO2 and H2O gas exchange model leaf scale Populus euphratica
2010/3/5
The following two models were combined to simultaneously predict CO2 and H2O gas exchange at the leaf scale of Populus euphratica: a Farquhar et al. type biochemical sub-model of photosynthesis (Farqu...