中国农业科学院农业信息研究所 中国农学会
Agricultural Information Institute of CAAS China Association of Agricultural Science Societies
En
Ch
中国农业科学院农业信息研究所 中国农学会 主办

AI检索

订阅

返回顶部
当前位置: 首页 > 文章 > 西藏不同草地类型群落根系分布特征与土壤因子的关系 中国草地学报 2018 (6) 33-38+46
Position: Home > Articles > Relationship between Root Distribution Characteristics and Soil Factors in Different Grassland Communities in Tibet Chinese Journal of Grassland 2018 (6) 33-38+46

西藏不同草地类型群落根系分布特征与土壤因子的关系

作  者：
魏巍;周娟娟;白玛嘎翁;多吉顿珠;刘云飞;土登群配;史睿智
单  位：
青稞和牦牛种质资源与遗传改良国家重点实验室/西藏自治区农牧科学院草业科学研究所
关键词：
青藏高原;土壤理化性质;粒径分布;根系分布特征
摘  要：
选取西藏高原高寒沼泽化草甸、高寒草甸、高寒草原3类草地类型的典型样地,于2016年在植被生长季获取0~30cm土层的根系生物质、土壤粒径和养分变化特征,分析不同植被群落根系分配规律及其与土壤因子之间的关系。结果显示,3类植被群落根系生物质分别为14.33、4.54、1.23kg/m2,根系垂直分布呈"T"字形,90%以上的生物质分布在0~20cm土层;根据土壤粒径组成,高寒沼泽化草甸和高寒草甸土壤可定性为粉质壤土,高寒草原为沙质壤土;土壤有机质、全氮和全磷变化规律与根系分布格局一致;根系分布与土壤粉粒、有机质、全氮、全磷呈极显著正相关(P<0.001),与砂粒含量呈极显著负相关(P<0.001),且呈现不同拟合曲线。表明根系分布受土壤理化特性的制约,要充分结合根-土关系进行分析,才能更准确地为草地保护和合理利用提供有力的数据支撑。
译  名：
Relationship between Root Distribution Characteristics and Soil Factors in Different Grassland Communities in Tibet
作  者：
WEI Wei;ZHOU Juan-juan;Baima Gaweng;Duoji Dunzhu;Basang Dunji;Tudeng Qunpei;SHI Rui-zhi;Institute of Pratacultural Science,Tibet Academy of Agriculture and Animal Husandry Science;Ali Grassland Station of Tibet Autonomous Region;
关键词：
Qinghai-Tibet Plateau;;Soil physical-chemical proprieties;;Particles size distribution;;Root distribution characteristics
摘  要：
The objective of the research was to explore the relationship between root distribution and soil factors of different grassland communities in Qinghai-Tibet plateau,Root biomass,soil particle size and variation characteristics of soil nutrient in the depth of 0-30 cm soil layer were analyzed at vegetation growing season across typical sample plots of Alpine Swamp meadow,Alpine meadow and Alpine steppe in 2016.The results showed that the root biomass were 14.33,4.54,1.23 kg/m2,respectively;root vertical distribution was presented"T"shape,and more than 90%of that was mainly concentrated in 0-20 cm.According to the composition of soil particle size,the soil texture of Alpine Swamp meadow and Alpine meadow were silt loam,Alpine steppe was sandy loam.The change rules of soil organic matter,total nitrogen and total phosphorus were consistent with the distribution pattern of root system.The root distribution was significantly positively correlated with soil silt,organic matter,total nitrogen and total phosphorus(P<0.001),while it was significantly negatively correlated with the content of sand content(P<0.001),and presented different fitting equations.Through the research,it is explicit that root distribution is restricted by the soil physicalchemical proprieties.It is necessary to analyze the relationship between root and soil to provide more accurate data supporting for grassland protection and rational utilization.

相似文章

导出引用
计量
文章访问数: 11
HTML全文浏览量: 0
PDF下载量: 0

所属期刊

推荐期刊

友情链接Friendly link
农业信息研究所Agricultural information institute 农业智能知识服务平台Agricultural intelligent knowledge service platform 农业学术服务平台Agricultural Knowledge Service System 中国知网CNKI 维普网VIP 万方WANFANG DATA
联系我们Contact us

电话Tell：010-82109652-808

邮箱E-mail：agrijournal@caas.cn

服务Service
关于我们About us 意见建议Opinions and suggest
版权说明Copyright
单位：中国农业科学院农业信息研究所 中国农学会 © 2017中国农业科学院农业信息研究所 ICP备案号：京ICP备09089781号-46