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当前位置: 首页 > 文章 > 藏北高寒植被地上生物量与土壤环境因子的关系 中国草地学报 2011,33 (1) 59-64
Position: Home > Articles > Relationships between Aboveground Biomass and Soil Factors in Alpine Grasslands in North Tibet Chinese Journal of Grassland 2011,33 (1) 59-64

藏北高寒植被地上生物量与土壤环境因子的关系

作  者：
赵景学;陈晓鹏;曲广鹏;多吉顿珠;尚占环
单  位：
西藏自治区农牧科学院畜牧兽医研究所;兰州大学青藏高原生态系统管理国际中心/草地农业科技学院
关键词：
藏北;高寒植被;地上生物量;土壤环境因子
摘  要：
用样带法研究藏北高寒植被地上生物量与土壤环境因子之间的关系,对高寒植被地上生物量和7个土壤指标进行相关性分析和回归分析,结果表明:高寒草原到高寒荒漠植被,群落组成逐渐趋于简单化。土壤环境因子影响高寒植被地上生物量,0~10cm土层的土壤有机碳、有效氮、全磷和速效磷与高寒植被地上生物量极显著正相关(P<0.01);10~20cm土层的土壤总有机碳和全磷与高寒植被地上生物量极显著正相关(P<0.01);20~30cm土层的土壤各环境因子与高寒植被地上生物量的关系均未达到显著水平。
译  名：
Relationships between Aboveground Biomass and Soil Factors in Alpine Grasslands in North Tibet
作  者：
ZHAO Jing-xue1,CHEN Xiao-peng1,QU Guang-peng2,DUOJI Dun-zhu2,SHANG Zhan-huan1,3(1.International Centre for Tibetan Plateau Ecosystem Management,College of Pastoral Agriculture Science and Technology,Lanzhou University,Lanzhou 730020,China;2.Institute of Livestock Research,Tibet Academy of Agriculture and Animal Husbandry Sciences,Lasa 850009,China;3.Institute of Tibetan Plateau Research,Chinese Academy of Sciences,Beijing 100085,China)
关键词：
North Tibet;Alpine vegetation;Aboveground biomass;Soil factor
摘  要：
Relationships between aboveground biomass and the soil factors in alpine grassland were studied in north Tibet.Correlation and regression analysis was used to study the relationships between aboveground biomass and seven soil factors.The results indicated that community composition gradually tends to simplify from alpine grassland to alpine desert.Organic carbon,available nitrogen,and available phosphorus in soil in the 0～10cm soil layers were positively correlated to aboveground biomass significantly(P<0.01);organic carbon and total phosphorus in soil in the 10～20cm soil layers were positively correlated to aboveground biomass significantly(P<0.01);the relationships between soil factors in the 20～30cm soil layers and aboveground biomass were not significant.

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