中国开放科研知识云: 检索

基于DNDC模型的土地利用和气候变化对土壤碳氮储量影响的模拟研究 学位论文
北京: 中国科学院生态环境研究中心, 2020
作者: 李守娟

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土地利用 Climate Change Soil Organic Carbon Total Nitrogen Soil Ecosystem Service 气候变化土壤有机碳总氮土壤生态服务 land Use

Mechanisms of organic-instead fertilization for coupling nitrogen supply and retention in cropland of purplish soil 学位论文
北京: 中国科学院大学, 2020
作者: HAMIDOU BAH

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固碳有机添加温室气体排放氮淋失紫色土

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

黄河三角洲滨海湿地铁循环微生物多样性和电活性 学位论文
博士, 北京: 中国科学院大学, 2017
作者: 张洪霞

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滨海湿地河口铁循环菌多样性电活性

塔里木盆地南缘不同土壤盐分生境下骆驼刺适应特性研究 学位论文
新疆乌鲁木齐: 中国科学院大学, 2017
作者: 罗瀚林

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疏叶骆驼刺极端干旱区盐分生境叶片性状根系分株 Alhagi sparsifolia Shap. extremely arid areas saline habitats leaf trait root ramet

黄土高原样带土壤水分空间变异与动态模拟 学位论文
北京: 中国科学院大学, 2017
作者: 王聪

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黄土高原样带尺度 Loess Plateau 土壤水分 Transect Scale 空间变异 Soil Moisture 随机模拟 Spatial Variation Stochastic modeling

三七根腐病根际微生态特征与调控技术研究 学位论文
博士, 北京: 中国科学院研究生院, 2016
作者: 吴照祥

收藏 | 浏览/下载：286/0 | 提交时间：2017/08/03

AM真菌，三七，根腐病，根际土壤，土壤微生物群落 AM fungi, Panax notoginseng, Root-rot disease, Rhizosphere soil, Soil microbial community

黑河中游土壤性质变异及其与植被分布的关系研究 学位论文
博士后, 北京: 中国科学院研究生院, 2016
作者: 李丹凤

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土壤有机碳 Soil organic carbon 土壤水分特征曲线 Soil water characteristic curve 模型模拟 Model simulation 土壤水分 Soil moisture 植被分布 Vegetation distribution

水陆交错界面氧化还原状况变化特征与氨氮吸附机理 学位论文
硕士, 北京: 中国科学院研究生院, 2016
作者: 黄维

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Wetlands, Ecotones, Oxidation-Reduction (Redox), Ammonia Nitrogen, Adsorption, Interaction of River and Lake, Water Level Fluctuation

零维石墨烯量子点及二维石墨基组装膜用于重金属离子的荧光传感研究 学位论文
博士, 北京: 中国科学院大学, 2016
作者: 许宏波

收藏 | 浏览/下载：47/0 | 提交时间：2016/09/27

重金属离子荧光石墨烯量子点二维自组装膜扫描隧道显微镜(STM)

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