先锋植物沙棘Ⅱ--克隆行为和根系特化是实现沙棘先锋作用的又一根本因素

沙棘是根源性根出条型克隆植物,它有克隆习性和克隆行为,它具有有性和无性2种繁殖方式。在田间沙棘林内,株间、片断、斑块间,存在着种群遗传上的多样性。沙棘侧根的特化结构组成了天然生物蓄水库,缓解了在干旱条件下对水分需求的矛盾。因此,作为一种双重生态型植物,解决了肥(N2)、水2个重要的生命及生态因子,是实现先锋植物功能的重要原因。

The Clonal Growth Behavior and Root System Specilization is Again One Basic Factor of Realization the Pioneer Plant Function

The seabuckthorn is clonal plant of root sucker of root-derived.It has the clonality,the clonal architecture and clonal behavior of the characters.It have there is sexual multiplication and cloning two kinds of method,So in seabuckthorn tree forest of in the field,of the offshoot,clonal fragment of the spot piece the existence have population genetics of diversity.More important its secondary root the especially structure to constitute the natural living creature cistern,Alleviate under the condition of dry to demanding antinomy of humidity.Therefore,dual ecosystem a plant of the seabuckthorn carry out important reason of the pioneer plant.It is to solve two important lifes of fertilizer(N_2),water and ecosystem factors.