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浏览/检索结果: 共17条，第1-10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   黄土塬区旱作农田土壤水库动态及蒸散规律 学位论文 北京: 中国科学院研究生院, 2018 作者:  李鹏展 收藏  |  浏览/下载：102/0  |  提交时间：2018/06/04 黄土塬区  旱作农业  水量平衡  土壤水库  蒸散  土壤干层   黄土宽梁缓坡丘陵区次降雨对土壤水分补给效率与阈值研究 期刊论文 中国科学:地球科学, 2018, 卷号: 48, 期号: 04, 页码: 457-466 作者:  张涵丹;  杨磊;  陈利顶 收藏  |  浏览/下载：15/0  |  提交时间：2019/03/14 植被恢复  土壤水分  降雨补给延滞  补给效率  补给阈值   APSIM-wheat模型在我国干旱半干旱地区的适应性评价——以内蒙古地区为例 期刊论文 干旱区资源与环境, 2018, 卷号: 32, 期号: 06, 页码: 99-105 作者:  杨霏云;  张婧婷;  潘宇鹰;  董智强;  樊栋樑 收藏  |  浏览/下载：25/0  |  提交时间：2019/03/13 春小麦  APSIM-wheat模型  适应性  内蒙古   生物炭对不同水氮条件下小麦产量的影响 期刊论文 干旱地区农业研究, 2018, 卷号: 36, 期号: 2, 页码: 8-15 作者:  李帅霖;  上官周平 收藏  |  浏览/下载：27/0  |  提交时间：2019/06/13 生物炭  氮肥  水分  产量  光合作用  小麦   西北旱地农家小麦品种抗旱生理机制探究 期刊论文 分子植物育种, 2018 杨倩; 袁飞敏; 王海庆; 陈志国; 刘德梅 收藏  |  浏览/下载：18/0  |  提交时间：2019/06/14 西北旱地农家小麦品种抗旱生理机制探究 期刊论文 分子植物育种, 2018 杨倩; 袁飞敏; 王海庆; 陈志国; 刘德梅 收藏  |  浏览/下载：28/0  |  提交时间：2019/07/05 西北旱地农家小麦品种抗旱生理机制探究 期刊论文 分子植物育种, 2018 杨倩; 袁飞敏; 王海庆; 陈志国; 刘德梅 收藏  |  浏览/下载：17/0  |  提交时间：2019/06/21 西北旱地农家小麦品种抗旱生理机制探究 期刊论文 分子植物育种, 2018 杨倩; 袁飞敏; 王海庆; 陈志国; 刘德梅 收藏  |  浏览/下载：11/0  |  提交时间：2019/06/28 西北旱地农家小麦品种抗旱生理机制探究 期刊论文 分子植物育种, 2018 杨倩; 袁飞敏; 王海庆; 陈志国; 刘德梅 收藏  |  浏览/下载：16/0  |  提交时间：2019/07/12