Study on the Biomass and Site Factors of Salix oritrepha in the Loess Hilly Region of Qinghai Province

doi:10.13466/j.cnki.lyzygl.2014.01.014

Abstract

Abstract: 72 Salix oritrepha sample plots were set in loess hilly region of Qinghai province,samples were collected and the biomass were analyzed.The effects of site factors on the total biomass were analyzed systematically.Results showed that the biomass of Salix oritrepha forest had a large variation from 0.34t/hm² to 31.19 t/hm²,the average biomass is 6.17t/hm².The average percentage of biomass above the ground accounted for 59.71%of the total biomass,and underground part had an average of 40.28%,the proportion of stems and roots of Salix oritrepha in meadow soil and grey brown soil were smaller than other kinds of soil,which indicated strong root development.There was good positive relationship between the total biomass and the coverage,while there was no obvious relationship between the total biomass and slope gradient,or slope positions.Salix oritrepha showed obvious growth advantage at 2800 to 3400m elevation,steep slope,medium and shady slope .

Key words: loess hilly region, Salix oritrepha, biomass, site factor

CLC Number:

S718.556

ZHAO Chuanchuan, MENG Hanlong, SONG Ruize, ZHAO Qiaoyu, AN Ruolan, DONG Xu. Study on the Biomass and Site Factors of Salix oritrepha in the Loess Hilly Region of Qinghai Province[J]. FOREST RESOURCES WANAGEMENT, 2014, 0(1): 66-70.

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