Evolution of pore-size distribution of intact loess and remolded loess due to consolidation

Journal of Soils and Sediments - It is widely acknowledged that the mechanical behavior of a soil is significantly influenced by the soil microstructure; and the microstructure can evolve as a...     

从叶片光合作用分析绿豆和谷子对科尔沁沙地光照条件的适应能力

科尔沁沙地大田种植的绿豆和谷子两种作物,叶片净光合速率(Pn)日变化曲线虽然均为单峰曲线,但Pn峰值出现的时间不同,且8:00后,谷子的Pn总是大于绿豆的。分析认为,谷子对强光的适应性比绿豆高。非气孔因素造成6:00～10:00绿豆Pn的降低,而10:00～12:00谷子Pn的降低主要是气孔导度下降引起的。与净光合测定同步的叶绿素荧