首页|模拟增温对管涔山林下草地土壤可培养细菌数量的影响

模拟增温对管涔山林下草地土壤可培养细菌数量的影响

扫码查看
原文链接
  • 万方数据
  • 维普
作为生态系统的重要组成部分，土壤微生物对温度变化十分敏感。为揭示气候变暖对管涔山不同海拔(2 222。4、2 395。0和2 571。3 m)土壤细菌数量变化特征的影响，采用开顶式增温箱进行模拟增温试验，设置CK(对照)、低度增温、高度增温3种处理，采用可培养方法研究不同增温处理下土壤细菌数量特征，同时测定理化性质，并分析其相关性。结果表明:(1)与对照相比，3个海拔样地2种增温处理均显著提高了 土壤可培养细菌数量(P＜0。05)。(2)不同海拔下，2种增温处理细菌数量的变化特征不同，只有在2 571。3 m处，高度增温显著高于低度增温(P＜0。01)。(3)纵向来看，CK与低度增温处理样地细菌数量随海拔升高呈显著下降趋势(P＜0。05)，而高度增温样地呈相反趋势，但未达到显著水平。(4)研究区可培养细菌数量与含水量呈极显著正相关关系(P＜0。01)。研究结果为区域生态系统微生物响应气候变暖提供理论依据与数据支撑。
The Effect of Simulated Warming on the Number of Culturable Bacteria in the Soil of Understorey Grassland of Guancen Mountain
As an important part of the ecosystem,soil microorganisms are very sensitive to temperature changes.In order to reveal the effect of climate warming on the characteristics of soil bacterial population at different altitudes(2222.4 m,2395.0 m and 2571.3 m)in Guancen Mountain,an open-top chamber(OTC)was used to simulate the warming experiment,and set up three kinds of treatments,namely,CK(control),low warming,and high warming,to study the characteristics of soil bacterial population under different warming treatments by using a culturable method,at the meantime,the physicochemical properties were measured and their correlations were analyzed.The results showed as the following four aspects.(1)Compared with the control,both warming treatments significantly increased the number of soil culturable bacteria in the three altitude samples(P＜0.05).(2)The characteristics of the changes in bacterial counts under the two warming treatments were different at different elevations,and only at 2571.3 m the high degree of warming was significantly higher than the low degree of warming(P＜0.01).(3)Longitudinally,the bacterial counts in the CK and low warming treatment samples showed a significant decreasing trend with increasing altitude(P＜0.05),while the opposite trend was observed in the high warming samples with-out reaching significant level.(4)There was a very significant positive correlation between the number of culturable bacteria and water content in the study area(P＜0.01).The results of the study provide theoretical basis and data support for regional ecosystem microbial response to climate warming.

Guancen Mountainsimulated warmingbacteria countsenvironmental factors

吴佳灵、刘晓娇、常丽娟、朱茜、冯煜清、郭子怡、赵慧茹、张宝贵

展开 >

太原师范学院地理科学学院,山西晋中 030619

中国科学院西北生态环境资源研究院甘肃省极端环境微生物资源与工程重点实验室,甘肃兰州 730000

管涔山 模拟增温 细菌数量 环境因子

国家自然科学基金项目山西省高等学校科技创新项目山西省高等学校科技创新项目山西省哲学社会科学规划项目太原师范学院大学生创新创业训练项目太原师范学院研究生教改项目太原师范学院教学改革项目太原师范学院研究生教育创新项目

420011022018021052021L4372022YJ116CXCY2125SYYJSJG-2113JGLX2204SYYJSYC-2241

2024

10.13601/j.issn.1005-5215.2024.01.004

防护林科技
黑龙江省森林与环境科学研究院　国家林业局三北防护林建设局　黑龙江省三北林业建设指导站

防护林科技

影响因子：0.264
ISSN：1005-5215
年,卷(期)：2024.(1)
  • 44