| 寒武纪生物大爆发之后的底栖生态系统工程建造者:以河南地区为例 |
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| 引用本文： | 刘炳辰,齐永安,代明月,白万备,樊钰超,庆国帅.寒武纪生物大爆发之后的底栖生态系统工程建造者:以河南地区为例[J].地球科学,2021,46(1):148-161. |
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| 作者姓名： | 刘炳辰 齐永安 代明月 白万备 樊钰超 庆国帅 |
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| 作者单位： | 河南理工大学资源环境学院,河南焦作 454000;河南理工大学资源环境学院,河南焦作 454000;河南理工大学资源环境学院,河南焦作 454000;河南理工大学资源环境学院,河南焦作 454000;河南理工大学资源环境学院,河南焦作 454000;河南理工大学资源环境学院,河南焦作 454000 |
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| 摘 要： | 扰动生物作为生态系统工程建造者，通过对沉积底质的改造直接影响沉积物和水体之间的相互作用（营养物质的循环、迁移和存储），对底栖生态系统工程有重要的影响.遗迹化石作为底栖生物活动的载体，为研究寒武纪大爆发之后底栖生态系统工程建造者的演化规律，并评价底栖生态系统工程建造者对生态系统工程产生的影响提供了依据.对河南地区8个寒武系剖面的遗迹化石数据进行统计，应用现代生物学中生态系统工程影响值的概念，从功能群、阶层、生物灌溉3个方面对底栖生态系统工程建造者进行研究.研究结果表明，寒武系第三阶至鼓山阶底栖生态系统工程建造者功能群类型由生物扩散型扰动者往向上/下运输者转变，阶层逐渐加深，生物灌溉越来越普及，生态系统工程影响值不断增大.鼓山阶至第十阶，遗迹化石类型及结构变化不大，生态系统工程影响值趋于稳定.这表明从寒武纪生物大爆发至鼓山阶，底栖生态系统工程建造者的行为策略发生着明显的进化与创新，生态系统工程建造者不仅开拓了重要的生态空间，而且为其他底栖生物和微生物创造了新的生境，在寒武纪海洋生态系统中扮演着重要的角色.
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| 关 键 词： | 寒武纪 底栖生物 生态系统工程 功能群 阶层 生物灌溉作用 古生物 |
| 收稿时间： | 2019-09-28 |
Benthic Ecosystem Engineer after the Cambrian Explosion:An Example from Henan Province |
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| Liu Bingchen,Qi Yong'an,Dai Mingyue,Bai Wanbei,Fan Yuchao,Qing Guoshuai.Benthic Ecosystem Engineer after the Cambrian Explosion:An Example from Henan Province[J].Earth Science-Journal of China University of Geosciences,2021,46(1):148-161. |
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| Authors: | Liu Bingchen Qi Yong'an Dai Mingyue Bai Wanbei Fan Yuchao Qing Guoshuai |
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| Affiliation: | (School of Resources and Environment,Henan Polytechnic University,Jiaozuo 454000,China) |
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| Abstract: | The bioturbators,which are ecosystem engineers,act on the interaction between sediments and water(the circulation,migration and storage of nutrients)through the reworking of sediments directly.As a result,they have an significant impact on benthic ecosystems engineering.The trace fossils provide evidence for studying the evolution of ecosystem engineers and assessing the impact of engineers on ecosystem engineering after the Cambrian explosion,as they provide records for activities of benthic organism.This paper studies benthic ecosystem engineers from three aspects-functional group,tiering and biological irrigation,by applying the modern biology concept of‘ecosystem engineering impact’.Statistics on the trace fossils of eight Cambrian sections in Henan Province show that the functional group types of the ecosystem engineers have changed from biodiffusive bioturbators to upward/downward conveyors,infaunal tier has gotten deeper,biological irrigation has became more common,and the ecosystem engineering impact has been increasing from Stage 3 to Drumian.But the type and structure of trace fossils have no changes,and the ecosystem engineering impact tends to be stable from Drumian to the Stage 10.This means that the behavioral strategy of benthic ecosystem engineer sevolve and innovate obviously during the time from the ending of the Cambrian Explosion to Drumian,by expanding ecospaces and creating new habitats for other macrobiotic and microbiotic organisms.In a word,these ecosystem engineers played an important role in the Cambrian marine ecosystem. |
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| Keywords: | Cambrian benthic organism ecosystem engineer functional groups tiering biological irrigation paleontology |
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