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| Characters of spermatophyte flora in ecological restoration area of soil and water conservation in the middle of Shandong province |
| Li Xuelei, Wang Li, Guo Jing, Yuan Li, Liu Xia, Zhang Guangcan |
| Department of Soil and Water Conservation Shandong Agricultural University, 271018, Taian,Shandong, China |
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Abstract In order to provide the theoretical basis for selecting, conservation and reasonable managing of vegetation species in the course of ecological restoration of soil and water conservation in the mountain area of middle Shandong province, the composition of the spermatophyte flora and geographical characteristics were analyzed. The results show that firstly there are 271 kinds of seed plant in all in this flora, belong to 61 families and 157 genus, accounting for 17.28%, 4.90% and 0.998% of family, genus and species of the spermatophyte flora in our country separately. The number of species which include single family and light family (including 2-9 species) account for 91.6% of the total species. The number of the single genus and the genus which include 2-4 genus is 161, accounting for 96.18% of the total genus. It can be showed that distribution of the family and genus in this flora are rather even and abundant. Secondly, the composition of temperate zone in this flora is obvious advantage, especially the composition of the north temperate zone. Genus of tropical nature in this flora occupy large proportion, it prove that the origin of this local flora and tropical flora is closed. It can be showed that distribution of the family and genus in this flora are more even and abundant. Thirdly, the endemicity of this flora is unconspicuous.
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Received: 20 March 2005
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