| 黑龙江不同玉米秸秆还田方式下土壤动物群落结构及其对秸秆降解的影响 |
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| 引用本文： | 杨迪,林琳,杨旭,张雪萍,沙迪,高梅香,张利敏. 黑龙江不同玉米秸秆还田方式下土壤动物群落结构及其对秸秆降解的影响[J]. 生态学报, 2020, 40(1): 356-366 |
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| 作者姓名： | 杨迪 林琳 杨旭 张雪萍 沙迪 高梅香 张利敏 |
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| 作者单位： | 哈尔滨师范大学地理科学学院/寒区地理环境监测与空间信息服务黑龙江省重点实验室, 哈尔滨 150025,哈尔滨师范大学地理科学学院/寒区地理环境监测与空间信息服务黑龙江省重点实验室, 哈尔滨 150025,哈尔滨师范大学地理科学学院/寒区地理环境监测与空间信息服务黑龙江省重点实验室, 哈尔滨 150025,哈尔滨师范大学地理科学学院/寒区地理环境监测与空间信息服务黑龙江省重点实验室, 哈尔滨 150025,哈尔滨师范大学地理科学学院/寒区地理环境监测与空间信息服务黑龙江省重点实验室, 哈尔滨 150025,哈尔滨师范大学地理科学学院/寒区地理环境监测与空间信息服务黑龙江省重点实验室, 哈尔滨 150025,哈尔滨师范大学地理科学学院/寒区地理环境监测与空间信息服务黑龙江省重点实验室, 哈尔滨 150025 |
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| 基金项目： | 国家自然科学基金项目（41371072，41471037）；哈尔滨师范大学校青年学术骨干项目（10XQXG08） |
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| 摘 要： | 以黑龙江省海伦市典型黑土耕地为试验样区,研究黑土区不同秸秆还田方式下土壤动物群落结构特征及其在秸秆降解中的作用。实验选取6目、30目、260目降解袋,设置5个处理:17kg玉米秸秆+2kg水还田+含微生物100%浓度催腐剂(样方A)、8.5kg玉米秸秆+1kg水还田+含微生物50%浓度催腐剂(样方B)、原始样方(样方C)、8.5kg玉米秸秆+1kg水还田(样方D)、17kg玉米秸秆+2kg水还田(样方E),并于2009—2011每年9月份测定不同样方的玉米秸秆降解率和微生物数量。结果表明:所有样方累积秸秆降解率都达55%以上,秸秆降解率从高到低排序依次为:样方A>样方B>样方C>样方D>样方E;对秸秆降解起主要作用的动物类群为中小型土壤动物中的甲螨亚目、中气门亚目和节跳虫科,约占土壤动物个体数的86.70%;不同处理样方中,土壤动物群落结构相似;相同处理样方中,不同规格的降解袋中土壤动物个数与类群差异显著(P<0.001);不同孔径降解袋中土壤动物的个数、类群数、多样性基本都与秸秆降解率呈正相关,进一步表明土壤动物对秸秆降解具有促进作用。
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| 关 键 词： | 耕作黑土 秸秆降解 土壤动物 响应特征 群落结构 |
| 收稿时间： | 2018-09-03 |
| 修稿时间： | 2019-08-22 |
Community structure of soil animals and its effect on straw degradation under different maize straw returning patterns in Heilongjiang Province |
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| YANG Di,LIN Lin,YANG Xu,ZHANG Xueping,SHA Di,GAO Meixiang and ZHANG Limin. Community structure of soil animals and its effect on straw degradation under different maize straw returning patterns in Heilongjiang Province[J]. Acta Ecologica Sinica, 2020, 40(1): 356-366 |
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| Authors: | YANG Di LIN Lin YANG Xu ZHANG Xueping SHA Di GAO Meixiang ZHANG Limin |
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| Affiliation: | Key Laboratory of Remotes Sensing Monitoring of Geographic Environment, College of Heilongjiang Province/College of Geographical Science, Harbin Normal University, Harbin 150025 China,Key Laboratory of Remotes Sensing Monitoring of Geographic Environment, College of Heilongjiang Province/College of Geographical Science, Harbin Normal University, Harbin 150025 China,Key Laboratory of Remotes Sensing Monitoring of Geographic Environment, College of Heilongjiang Province/College of Geographical Science, Harbin Normal University, Harbin 150025 China,Key Laboratory of Remotes Sensing Monitoring of Geographic Environment, College of Heilongjiang Province/College of Geographical Science, Harbin Normal University, Harbin 150025 China,Key Laboratory of Remotes Sensing Monitoring of Geographic Environment, College of Heilongjiang Province/College of Geographical Science, Harbin Normal University, Harbin 150025 China,Key Laboratory of Remotes Sensing Monitoring of Geographic Environment, College of Heilongjiang Province/College of Geographical Science, Harbin Normal University, Harbin 150025 China and Key Laboratory of Remotes Sensing Monitoring of Geographic Environment, College of Heilongjiang Province/College of Geographical Science, Harbin Normal University, Harbin 150025 China |
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| Abstract: | Taking the typical black soil farmland in Hailun City, Heilongjiang Province as an experimental sample area, the characteristics of soil animal community structure and its role in straw degradation under different straw returning methods in black soil area were studied. The degradation bags of 6, 30, and 260 meshes were selected and five treatments were set up including 17kg corn straw+2kg paddy returning+100% microbial concentration accelerator (sample A), 8.5kg corn straw+1kg paddy returning+50.0% microbial concentration accelerator (sample B), original sample (sample C), 8.5kg corn straw+1kg paddy returning (sample D), and 17kg corn straw+2kg paddy returning (sample E), respectively. The degradation rate of corn straw and the number of microorganisms were determined in each September from 2009 to 2011. The results showed that the cumulative straw degradation rate of all samples was more than 55.0%. The order of straw degradation rate was A > B > C > D > E. The main animal groups that played a major role in straw degradation were Oribatidae, Mesostigmata, and Arthropodiaceae, which accounted for 86.7% of the total number of soil animals. In the same treatment sample, the number and diversity of soil fauna in different size degradation bags were significantly different (P<0.001), while the number, type and diversity of soil fauna in different aperture degradation bags were positively correlated with the degradation rate of straw, which further indicated that soil fauna could promote the degradation of straw. |
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| Keywords: | cultivated black soil straw degradation soil animal response characteristics community structure |
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