Floristic Analysis of the Seed Plants in Sand Lake Nature Reserve(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Author(s):: TENG Ying-feng¹; WANG Jun²; ZHANG Ying-cai¹; 1.College of Life and Science，Ningxia University，Yinchuan，Ningxia 750021;
2.College of National Preparatory Education，Ningxia University,Yinchuan,Ningxia 750021

Abstract:: Sand Lake Nature Reserve is located in Arid Zone of Ningxia.There are 161 species (including varieties) of the seed plants distributed in Sand Lake Nature Reserce belong to 47 families and 123 genera.These species in 47 families can be divided into 5 areal-types and 2 sub-types，and the 57.1% of them are tropic areal-types involving 12 families，42.9% of them are temperate areal-type involving 9 families.Two types have small difference in families，it is illustrated the area is transition of triopical to temperrate type.Further，the 123 genera can be divided into 13 areal-types and 9 sub-types，in which the temperate areal-type and sub-types involve 60 genera accounting for 60.6% in total，also showed a dominant floristic element in this seed flora.The investigation results demonstrated that the seed plant in the composition of simple and moiority of them are desertification and salilinazation plants;but eographical elements of the flora are comparatively complex，has a significant temperate characteristic;because of the intensification of human activities，the flora of the Sand Lake area is increasingly fragile.

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Last Update: 2014-08-25