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 > 藏北退化草地群落生物量与土壤养分的关系 草业科学 2016,33 (6) 1062-1069
Position: Home > Articles > The relationships between community biomass and soil nutrients in the northern Tibet degradation grassland Pratacultural Science 2016,33 (6) 1062-1069

藏北退化草地群落生物量与土壤养分的关系

作  者：
孙磊;刘玉;武高林;魏学红
单  位：
中国科学院水利部水土保持研黄土高原土壤侵蚀与旱地农业国家重点实验室;西藏大学农牧学院
关键词：
藏北地区;退化草地;土壤养分;地上生物量;同步退化
摘  要：
草地退化会呈现出地上群落与土壤的同步退化,相对于地上植被的退化,土壤退化呈现一定的滞后性,为分析藏北高寒草地退化过程中的群落地上生物量与土壤养分关系,选取那曲地区不同退化程度高寒草地,对土壤养分和地上生物量进行研究。结果表明,随着退化程度的加剧,藏北地区退化草地群落地上生物量和土壤养分(除全钾外)总体上表现为降低趋势,而且步调基本一致。土壤全氮、全钾含量与土壤有机质呈显著正相关(P<0.05),土壤pH与有机质含量呈显著负相关(P<0.05)。草地地上生物量与土壤有机质含量呈显著正相关(P<0.05),与全氮、全磷、全钾含量的相关性不显著(P>0.05)。
译  名：
The relationships between community biomass and soil nutrients in the northern Tibet degradation grassland
作  者：
Sun Lei;Liu Yu;Wu Gao-lin;Wei Xue-hong;Agricultural and Animal Husbandry College of Tibet University;State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau,Institute of Soil and Water Conservation,Chinese Academy of Sciences and Ministry of Water Resources;
关键词：
northern Tibet;;degradation grassland;;soil nutrients;;aboveground biomass;;degradation synchronization
摘  要：
Grassland degradation had characteristic of vegetation and soil degradation synchronization.In order to study the relationships between community biomass and soil nutrient during degradation processes in the northern Tibet grassland,alpine grassland in Nagqu,northern Tibet with different degraded degrees were selected to study the variations of soil nutrients and above ground biomass.The results showed that with increasing of grassland degradation,aboveground biomass and soil organic matter significantly decreased.Total nitrogen,total phosphorus and total potassium had significant positive correlation with soil organic matter(P<0.05)whereas soil pH had significant negative correlation with soil organic matter content(P <0.05).Aboveground biomass had significant positive correlation with soil organic matter content(P<0.05)but had no correlation with total nitrogen,total phosphorus,total potassium and pH(P>0.05).

相似文章

导出引用
计量
文章访问数: 0
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