J Integr Plant Biol. ›› 1980, Vol. 22 ›› Issue (3): -.

• Research Articles •    

The Eco-Geographical Rule of Stipeta Steppe on the Sungliao Plain

Li Bo, Yong Shi-peng, Liu Zhung-ling, Sun Hong-liang and Zeng Si-di   

Abstract: Acoording to the field investigation data, five species of Stipa in Sungliao Plain have been confirmed in this article, namely Stipa baicalensis, S. grandis, S. Krylovii, S. bungeana and S. breviflora. Except the last one all belong to the older section leiostipa. The five species of Stipa may all be deficated in Sungliao Plain, they form respectively the communities, with definite distribution limits. The former four formations bear clearly the zone significance. In this article the species composition, the ecological qualities and geographical distribution of communities have been comared and analyzed; and according to the difference of water and heat reflected by the different formation, the problem of the division of the vegetation region has been discussed. The facts have proved that, on the basis of Stipeta steppe distribution and the division of the vegetation region is consistent with the division of the natural complex. Thus, the difference of the vegetation and the land resources of Sungliao Plain are ascertained, and the theoretical basis is provided for the division of the natural region and the division of agricultural, forestal and animal husbandry region.

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