新疆农业科学 ›› 2018, Vol. 55 ›› Issue (11): 2134-2141.DOI: 10.6048/j.issn.1001-4330.2018.11.021

• 畜牧·兽医·草业 • 上一篇    下一篇

短期封育对博乐绢蒿荒漠群落特征和碳密度的影响

别尔达吾列提·希哈依, 董乙强, 安沙舟, 刘慧敏   

  1. 新疆农业大学草业与环境科学学院,乌鲁木齐 830052
  • 收稿日期:2018-09-02 发布日期:2019-02-22
  • 通信作者: 安沙舟(1956-),男,陕西富平人,教授,博士,博士生导师,研究方向为草地资源与生态,E-mail:xjasz@126.com
  • 作者简介:别尔达吾列提·希哈依(1991-),男,新疆阿勒泰人,硕士研究生,研究方向为草地资源与生态,E-mail:2411160320@qq.com
  • 基金资助:
    国家科技基础资源调查专项“中国荒漠主要植物群落调查”之“塔里木-准噶尔盆地荒漠主要植物群落调查(2017FY100201)”

Effects of Short-term Non-grazing on Community Characteristics and Carbon Density in Seriphidium borotalense Desert

Berdaulet Xihayi, DONG Yi-qiang, AN Sha-zhou , LIU Hui-min   

  1. College of Pratacultural and Environmental Sciences, Xinjiang Agricultural University, Urumqi 830052, China
  • Received:2018-09-02 Published:2019-02-22
  • Correspondence author: AN Sha-zhou (1956-), male, native place Fuping, Shanxi. Professor, DAG; research field Grassland resource and ecology, E-mail: xjasz@126.com
  • Supported by:
    The Special Project of National Science and Technology Basic Resources Survey -Investigation of the Basic Resources in Desert Regions of China "The Investigation of Desert Main Plant Communities in Tarim-Junggar Basin" (2017FY100201)

摘要: 【目的】研究封育对荒漠草地群落特征和物种多样性影响,分析生态系统碳库对草地封育的响应规律,为退化荒漠草地的修复和科学管理提供科学依据。【方法】以新疆博乐绢蒿荒漠为研究对象,采用野外调查和室内分析相结合的方法,对封育4 a的荒漠草地群落数量特征、物种多样性和生态系统碳库(生物量碳库,凋落物碳库和土壤碳库)测定分析。【结果】(1)与自由放牧区(FG)相比,封育4 a后博乐绢蒿荒漠草地的植被高度、盖度、密度、多样性指数、均匀度指数和丰富度指数降低了6.2%~48.4%(P>0.05)。(2)封育不利于生物量的积累,茎、枯落物和地下(0~100 cm根系)生物量封育后显著下降了18.6%~31.1%(P<0.05),但根冠比没有显著变化。(3)封育降低了博乐绢蒿荒漠草地地上生物量碳密度、表层土壤有机碳含量,且土壤上层(0~50 cm)有机碳密度降低幅度为53.5~233.6 g/m2【结论】短期封育不利于博乐绢蒿荒漠草地生物多样性的维持和生态系统碳库的积累,在封育措施的基础上配合施肥、补播等其他恢复措施。

关键词: 禁牧; 博乐绢蒿; 有机碳库; 物种多样性

Abstract: 【Objective】 This research aims to clarify the effects of non-grazing (NG) on the community characteristics, plant diversity and the ecosystem carbon pool in the hope of providing a scientific basis for the restoration and scientific management for the degraded desert grassland.【Method】The community characteristics, the plant diversity and the ecosystem carbon pool in the Seriphidium borotalense desert for 4 years fencing in Bole were studied by using the method of combination field survey with the laboratory analysis.【Result】(1) Compared with freely grazing, the community height, coverage, density, diversity index, evenness index and richness index decreased(P>0.05)by 6.2%-48.4% in NG plots; (2) Non-grazing had a negative effect on the accumulation of biomass. Stem, litter and below-ground (0-100 cm soil layers) biomass significantly decreased(P>0.05)by 18.6%-31.1% and the root-shoot ratio did not change significantly after NG; (3) Non-grazing reduced the above-ground biomass carbon density and soil organic carbon content, and the soil upper layer (0-50 cm) organic carbon density decreased by 53.5-233.6 g/m2.【Conclusion】On the whole, short-term non-grazing is not conducive to the maintenance of biodiversity and the accumulation of carbon pool in ecosystem of Seriphidium borotalense desert grassland, so it is suggested that other restoration measures should be combined with fertilization and supplementary sowing on the basis of fencing measures.

Key words: non-grazing; Seriphidium borotalense; organic carbon storage; plant diversity

中图分类号: 


ISSN 1001-4330 CN 65-1097/S
邮发代号:58-18
国外代号:BM3342
主管:新疆农业科学院
主办:新疆农业科学院 新疆农业大学 新疆农学会

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