中国开放科研知识云: 检索

汽爆秸秆溶磷新工艺及其系统集成的研究 学位论文
: 中国科学院大学, 2020
作者: 刘菲菲

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酸碱循环,汽爆秸秆,生物质炼制,腐植酸,系统集成

不同氮肥管理下春玉米地土壤硝态氮的淋溶阻控技术与阈值研究 学位论文
北京: 中国科学院大学, 2019
作者: 吴三鼎

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春玉米缓控肥硝化抑制剂秸秆深埋土壤硝态氮淋溶阈值

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

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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

肥盐交互作用对滨海盐渍土与冬小麦生长的影响及肥料效应研究 学位论文
硕士, 北京: 中国科学院大学, 2017
作者: 单晶晶

收藏 | 浏览/下载：35/0 | 提交时间：2017/06/08

肥料效应模型，氮磷肥，冬小麦，黄河三角洲

大豆替代其他农作物的N2O减排效应研究 学位论文
2016, 2016
许俊武

收藏 | 浏览/下载：8/0 | 提交时间：2017/06/20

N2O减排措施种植大豆减排潜力 N2O mitigation measures Growing soybeans Abatement potential

合成氨生产企业ERP系统的设计与实现 学位论文
2016, 2015
马晓东

收藏 | 浏览/下载：4/0 | 提交时间：2017/06/20

合成氨生产企业 ERP B/S架构 Synthetic ammonia Enterprises ERP B/S Framework

生物炭对土壤中磷的形态转化以及有效性的影响 学位论文
硕士, 北京: 中国科学院研究生院, 2015
作者: 武玉

收藏 | 浏览/下载：356/0 | 提交时间：2015/06/25

生物炭磷的形态玉米小麦花生壳

人类活动对水生态系统的胁迫强度评价 ——以海河流域为例 学位论文
博士后, 北京: 中国科学院研究生院, 2015
作者: 郝利霞

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海河流域、县域、人类活动、水生态系统、胁迫评价，The Haihe River Basin, county scale, anthropogenic activities, aquatic ecosystem, stress evaluation

水稻土碳、氮投入对甲烷产生及产甲烷古菌的影响 学位论文
博士后, 北京: 中国科学院研究生院, 2014
保琼莉

收藏 | 浏览/下载：141/0 | 提交时间：2015/06/12

水稻土稻秸硝态氮 CH4 产甲烷古菌 rice paddy soil rice straw nitrate CH4 methanogenic community

海河流域农田生态系统1990-2010年氮平衡时空变化特征研究 学位论文
硕士, 北京: 中国科学院研究生院, 2014
作者: 郑萌萌

收藏 | 浏览/下载：50/0 | 提交时间：2015/06/26

氮平衡氮盈余强度氮利用效率农田生态系统海河流域 nitrogen budget nitrogen surplus intensity nitrogen use efficiency agroecosystem Haihe Basin

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