野牛草碳氮磷密度分配特征

doi:10.11733/j.issn.1007-0435.2024.01.018

草地学报 ›› 2024, Vol. 32 ›› Issue (1): 168-178.DOI: 10.11733/j.issn.1007-0435.2024.01.018

野牛草碳氮磷密度分配特征

黄馨慧, 位晓婷, 褚章衫, 张金鑫, 邹博坤, 钱永强

中国林业科学研究院生态保护与修复研究所/国家林业和草原局草原研究中心, 北京 100091

收稿日期:2023-05-05 修回日期:2023-11-10 出版日期:2024-01-15 发布日期:2024-01-30
通讯作者: 钱永强,E-mail:qianyq@caf.ac.cn
作者简介:黄馨慧(1997-),女,汉族,新疆昌吉人,硕士研究生,主要从事草原植物挖掘与利用研究,E-mail:714099893@qq.com
基金资助:
中央级公益性科研院所基本科研业务费“揭榜挂帅”专项（CAFYBB2022XA002）；国家林草局应急科技揭榜挂帅项目（202201）资助

Characteristics of Carbon, Nitrogen, and Phosphorus Density Distribution in Buffalograss

HUANG Xin-hui, WEI Xiao-ting, CHU Zhang-shan, ZHANG Jin-xin, ZOU Bo-kun, QIAN Yong-qiang

Institute of Ecological Protection and Restoration, Chinese Academy of Forestry/Grassland Research Center, National Forestry and Grassland Administration, Beijing 100091, China

Received:2023-05-05 Revised:2023-11-10 Online:2024-01-15 Published:2024-01-30

摘要/Abstract

摘要： 为探究不同野牛草（Buchloe dactyloides）种质资源在同一种植条件下生物量和碳（Carbon，C）、氮（Nitrogen，N）、磷（Phosphorus，P）元素的分配规律，本研究以40份野牛草种质资源为研究对象，通过分析种植一年的野牛草的生物量和C，N，P含量及密度特征，发现地上生物量和C密度均是地下的两倍左右，地上N，P密度略小于地下部分，这说明野牛草N，P养分优先供应给根系，生物量和C养分优先分配给地上部分。通过因子分析将野牛草C，N，P密度及比值等18个指标浓缩成4个因子，聚类分析将野牛草种质资源分为5类，C，N，P密度及比值特征相近、地理种源相近的种质资源大多被分在同一组，其中HC-16，5-1B，71-10A，7-1C，A，8-1A，53-2A，63-5B，26-3A这9个种质资源在种植条件一致的情况下表现良好，均具有较高的C，N，P含量及较大的生物量，抗逆性较好，适宜应用于多种生境环境推广种植。

关键词: 野牛草, 碳、氮、磷化学计量特征, 因子分析, 聚类分析

Abstract: In order to explore the distribution of biomass and C, N, and P elements in different buffalograss (Buchloe dactyloides) germplasm resources under the same planting conditions, 40 buffalograss materials were used as research objects. It was found that aboveground biomass and C density were twice of those underground, and aboveground N and P densities were slightly smaller than underground parts, which was based on the analysis of the content and density of carbon, nitrogen, and phosphorus and the biomass in Buffalograss that had been planted for one year.It indicates that the N and P nutrients of buffalograss were preferentially supplied to the root system and the biomass and C nutrients were preferentially allocated to the aboveground part. Through factor analysis, the 18 indicators of C, N, P density and ratio of buffalograss could be condensed into four factors, and the germplasm resources of buffalograss were divided into five classes by cluster analysis, and most of the germplasm resources with similar characteristics of C, N, P density and ratio, and geographic sources of origin were classified into the same group. The nine germplasm resources of HC-16, 5-1B, 71-10A, 7-1C, A, 8-1A, 53-2A, 63-5B, and 26-3A all performed well under the same planting conditions, and all of them have high C, N, and P contents and large biomass, with good resistance to adversity, and are suitable for cultivation in a variety of habitats.

Key words: Buffalograss, Carbon,nitrogen,and phosphorus stoichiometric characteristics, Factor analysis, Cluster analysis

中图分类号:

S543

黄馨慧, 位晓婷, 褚章衫, 张金鑫, 邹博坤, 钱永强. 野牛草碳氮磷密度分配特征[J]. 草地学报, 2024, 32(1): 168-178.

HUANG Xin-hui, WEI Xiao-ting, CHU Zhang-shan, ZHANG Jin-xin, ZOU Bo-kun, QIAN Yong-qiang. Characteristics of Carbon, Nitrogen, and Phosphorus Density Distribution in Buffalograss[J]. Acta Agrestia Sinica, 2024, 32(1): 168-178.

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https://manu40.magtech.com.cn/Jweb_cdxb/CN/Y2024/V32/I1/168

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野牛草碳氮磷密度分配特征

Characteristics of Carbon, Nitrogen, and Phosphorus Density Distribution in Buffalograss

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