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浏览/检索结果: 共4条，第1-4条 帮助 限定条件 发表日期：2018     已选(0)清除 条数/页：5101520253035404550556065707580859095100   排序方式：请选择作者升序作者降序题名升序题名降序发表日期升序发表日期降序提交时间升序提交时间降序 基于高分辨质谱的土壤溶解性有机质化学多样性研究 学位论文 北京: 中国科学院生态环境研究中心, 2018 作者:  李晓明 收藏  |  浏览/下载：24/0  |  提交时间：2020/07/15 土壤溶解性有机质， 化学多样性，微生物多样性， 傅立叶变换离子回旋 共振质谱  decreased WIth IncreasIng Iron ComplexIng Index. PAtterns In Molecular PrOfiles IndicAted Dom In Paddy Soils To Become More RecalcItrAnt At Higher Soil C/n rAtio And Higher Soil Ph. furTherMore, PlAnt-derived polyPh.nols And Pyrogenic Dom Were retaIned Favorably By Iron And The ChemodiversIty Of Dom In Paddy Soil Increased WIth IncreasIng Soil C/n rAtios. These Results Provide Novel InFormAtion regardIng Dom Characteristics At a Molecular Level And Will InForm Better Global MAnagement Of Soil Carbon In Paddy Soil EcosysteMs Global. 2) Through The applicAtion Of Ft-icr-Ms, The ChemodiversIty Of Dom In Soil Subjected To Long-term OrgAnic Carbon And InOrgAnic Fertilizer Amendments Was Established. In Parallel, Bcc Was Assessed. Through This Coupled Approach It Was Established.thAt sustaIned OrgAnic Carbon Amendment Resulted In: SignificAntly (p < 0.05) Increased Total Carbon And Total nItrogen Reservoirs In Soil, Dom PrOfiles Of greAter ChemodiversIty, And Emergence Of RecalcItrAnt Dom Moieties (H/c < 1.5). In Contrast, Carbon And nItrogen Reservoirs In Soil Subjected To sustaIned InOrgAnic Fertilizer applicAtion Were Unaltered, While Soil OrgAnic Carbon ChemodiversIty Was Observed To Shift To Less RecalcItrAnt Dom Moieties (H/c rAtio > 1.5 And O/c rAtios < 0.5). furTherMore, sustaIned OrgAnic Carbon Amendment Shaped Bcc To a eutroPh.c stAte While Long-term Chemical fertilizAtion Directed The Bcc Towards An oligotroPh.c stAte. Higher connectivIty And Network complexIty Were Observed In OrgAnic Carbon Amended Soils. Dom-Bcc Network Analysis, IndicAtIng thAt Soil Microbes Had More Interaction WIth Dom Molecules followIng sustaIned OrgAnic mAtter Input. These Results Highlight The Potential For OrgAnic Carbon Amendments To Not Only Build Soil Carbon sTocks And Increase Their Resilience, But To Also Improve The Functional stAte Of Soil Microbial communIties. Key Words: Dom, ChemodiversIty, Microbial diversIty, Ft-icr Ms   不同水分条件下土壤中厌氧氨氧化菌的分布、演替及功能 学位论文 北京: 中国科学院生态环境研究中心, 2018 作者:  王成 收藏  |  浏览/下载：135/0  |  提交时间：2019/07/25 厌氧氨氧化,水分,土壤,氮循环,演替 Anammox, Water, Soil, n Cycle, Succession   浮游动物的深海适应性和生态化学计量学基础研究 学位论文 中国科学院海洋研究所: 中国科学院大学, 2018 作者:  陈蕾 收藏  |  浏览/下载：69/0  |  提交时间：2018/06/22 浮游动物  热带西太平洋  生态化学计量学  中深层  上层   施磷对峨眉冷杉(Abies fabri)和麦吊云杉(Picea brachytyla)幼苗竞争关系的影响 学位论文 北京: 中国科学院大学, 2018 作者:  余雷 收藏  |  浏览/下载：31/0  |  提交时间：2019/01/23 竞争  施磷肥  资源利用效率  原生演替  海螺沟冰川退缩区