|本期目录/Table of Contents|

[1]吴雨晴 田 赟 ** 周建琴 张克斌.不同放牧制度草地土壤碳氮磷化学计量特征*[J].应用与环境生物学报,2019,25(04):1-7.[doi:10.19675/j.cnki.1006-687x.2018.10004]
 WU Yuqing,TIAN Yun **,ZHOU Jianqin & Z HANG Kebin.Ecological stoichiometric characteristics of soil carbon, nitrogen and phosphorus in the different gra zing regimes*[J].Chinese Journal of Applied & Environmental Biology,2019,25(04):1-7.[doi:10.19675/j.cnki.1006-687x.2018.10004]
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不同放牧制度草地土壤碳氮磷化学计量特征*()
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《应用与环境生物学报》[ISSN:1006-687X/CN:51-1482/Q]

卷:
25卷
期数:
2019年04期
页码:
1-7
栏目:
研究论文
出版日期:
2019-07-30

文章信息/Info

Title:
Ecological stoichiometric characteristics of soil carbon, nitrogen and phosphorus in the different gra zing regimes*
文章编号:
201810004
作者:
吴雨晴1 田 赟 1** 周建琴 1 张克斌 1
1北京林业大学水土保持学院 北京 100083
Author(s):
WU Yuqing 1 TIAN Yun 1** ZHOU Jianqin 1 & Z HANG Kebin 1
1School of Soil and Water ConservationBeijing Forestry UniversityBeijing 100083China
关键词:
放牧制度化学计量特征草地土壤内蒙古
Keywords:
grazing regimes stoichiometric characteristics grassland soil Inner Mongolia
DOI:
10.19675/j.cnki.1006-687x.2018.10004
摘要:
放牧是人类对草地资源管理和利用的主要方式之一,研究不同放牧制度下的草地土壤化学计量特征,将为草地植被的可持续利用和草地放牧制度的选择提供科学依据。以呼伦贝尔新巴尔虎左旗4种不同放牧制度(禁牧、休牧、划区轮牧和常牧)的草场为研究对象,通过样地调查和土壤碳(C)、氮(N)和磷(P)3种元素含量的测定,分析了4种不同放牧制度下土壤化学计量特征及其与植被群落特征和土壤化学性质的相关性。结果显示:禁牧条件下,植被生长状况较好。碳氮磷含量大体均呈现:禁牧>休牧>划区轮牧>常牧的变化趋势;在不同的放牧制度下,土壤碳氮含量集中分布于0-10cm,且显著高于下层土壤(p<0.05);4种放牧制度下土壤C/N无明显变化,而常牧区的C/P和N/P均显著低于禁牧区;此外,土壤碳氮磷含量均与pH值呈极显著负相关(p<0.01),物种丰富度指数和多样性指数均与C/P和N/P呈极显著负相关(p<0.01)。研究表明,磷是该地区主要的限制性养分元素,且磷含量受土壤深度的影响较小;与常牧相比,禁牧、休牧及轮牧均有利于植物生长、土壤理化性质改良以及养分含量积累。(图2表3参39)
Abstract:
Objectives: Understanding the impact of grazing regimes on ecological stoichiometric characteristics of grassland soil is important for grassland conservation and management. The present paper is aiming to study the ecological stoichiometric characteristics of carbon (C) , nitrogen (N) , and phosphorus (P) in the temperate typical grassland of Hulun Buir, in Inner Mongolia, China.Methods:Plots survey under different grazing regimes , including forbidden grazing, seasonal grazing, rotation grazing and permanent grazing. We compared 4 types of grazing regimes by studying vegetation traits and soil properties, stoichiometric characteristics of soil C, N and P, and revealed the ir relationship. Results: Under the regime of permanent grazing, the vegetation growth was the best . The C, N and P contents were generally shown as: forbidden grazing > seasonal grazing > rotation grazing > permanent grazing. Under all 4 different grazing regimes , the C and N contents in surface soil (0-10cm) significantly higher than those in the lower layer ( p<0.05). As for soil stoichiometric ratios, there was no significant change in C/N among the 4 different grazing regimes. In contrast, C/P and N/P were the highest in permanent grazing area and the lowest in permanent grazing area. In addition, the correlation analysis showed that C, N and P contents were significantly and negatively correlated with pH (p<0.01), and species richness index and diversity index were significantly and negatively correlated with C/P and N/P (p<0.01). Conclusions: P is the main limit ed nutrient element in the study area, and P content is less affected by soil depth. Compared with permanent grazing, forbidden grazing, seasonal grazing and rotating grazing are beneficial to plant growth, improveme nt of edaphic properties and nutrient accumulation.? ? ? ? ? ? ? ? ? ? ? ? ?

相似文献/References:

[1]邓浩俊,陈爱民,严思维,等.不同林龄新银合欢重吸收率及其C:N:P化学计量特征[J].应用与环境生物学报,2015,21(03):522.[doi:10.3724/SP.J.1145.2014.11032]
 DENG Haojun,CHEN Aimin,YAN Siwei,et al.Nutrient resorption efficiency and C:N:P stoichiometry in different ages of Leucaena leucocephala[J].Chinese Journal of Applied & Environmental Biology,2015,21(04):522.[doi:10.3724/SP.J.1145.2014.11032]
[2]蒋 龙,徐振锋,吴福忠,等.亚热带3种常绿森林土壤和植物叶片C、N、P化学计量特征*[J].应用与环境生物学报,2019,25(04):1.[doi:10.19675/j.cnki.1006-687x.2018.11023]
 JIANG Long,XU Zhen-Feng,WU Fu-Zhong,et al.Stoichiometr study of C, N and P in soil and plant leaves at three typical evergreen forest types in subtropical zone[J].Chinese Journal of Applied & Environmental Biology,2019,25(04):1.[doi:10.19675/j.cnki.1006-687x.2018.11023]

备注/Memo

备注/Memo:
收稿日期: 2018-10-06 接受日期 Accepted: 2018-11-21*国家重点研发计划(2016YFC0500908)资助 **通讯作者(E-mail: tianyun@bjfu.edu.cn)点击摘要页题目后的“PDF”可下载阅读全文;本文为已录用的作者修定稿,尚未经编辑全面修改。引用本文请注明出处本刊;发表刊期和页码将以正式出版时的安排为准,但DOI确定不变。
更新日期/Last Update: 2018-12-28