Results 21 to 30 of about 1,016 (145)

Nutrient Characteristics and Factors Influencing Surface Soil with Gully Erosion on Sloping Farmland for Low Hilly Terrain in Black Soil Area [PDF]

open access: yes, 2023
[Objective] The soil nutrient characteristics and influencing factors of surface soil gully erosion for low hilly terrain in the black soil area were studied in order to provide data and theoretical support for the rational use of land resources ...
He Xuyang   +7 more
core   +1 more source

不同有机物料对苏打碱化土有机碳库和化学性质的影响

open access: yesShuitu Baochi Xuebao, 2022
以内蒙古河套灌区苏打碱化土为研究对象开展田间试验,设置常规施肥(CK)、生物炭+常规施肥(BC)、牛粪+常规施肥(CD)、玉米秸秆+常规施肥(SW)和羊粪+常规施肥(GM)5个处理,研究不同有机物料添加对碱化土壤有机碳(SOC)库和化学性质的影响。分别于2019年和2020年收获季采集0—30 cm耕层土壤,分析不同有机物料添加下SOC及其活性碳组分和主要盐碱指标的变化特征及其相关关系。结果表明:与CK相比,2019年和2020年各有机物料添加处理下SOC平均增幅分别为22.7%和17.2 ...
张月鲜   +6 more
doaj   +2 more sources

Pre‐Formation of LiF‐Rich Interfaces on Prelithiated Si/C Anodes for High‐Energy Lithium‐Ion Batteries

open access: yesRare Metals, Volume 45, Issue 4, April 2026.
ABSTRACT Prelithiation is effective for compensating active lithium‐ion (Li+) loss in silicon (Si)‐based battery electrode materials. However, owing to the dynamic growth of the solid electrolyte interface (SEI), capacity fading remains the biggest challenge for the industrialization of Si electrodes.
Wen‐Jie He   +9 more
wiley   +1 more source

Lithology modulates soil priming effect via resource limitations and bacterial community structure

open access: yesFunctional Ecology, Volume 40, Issue 1, Page 176-190, January 2026.
Read the free Plain Language Summary for this article on the Journal blog. Abstract The soil priming effect (PE), triggered by root exudate inputs that stimulates microbial activity and drives significant soil carbon (C) losses in terrestrial ecosystems.
Xinyu Hou   +4 more
wiley   +1 more source

Study on microbial community responses and dissolved organic matter (DOM) transformations in coastal surface seawater amended with sedimentary DOM in Xiamen [PDF]

open access: yes, 2016
海洋沉积物是海水溶解有机质(Dissolvedorganicmatters,DOM)的重要来源。DOM作为海洋异养微生物生存的主要物质和能量来源,影响着微生物群落的结构,而微生物群落也同时影响着DOM的化学组成和最终命运。近年来,海洋沉积物DOM成为海洋生物地球化学领域的热点研究对象,但其生物可利用性一直存在争议,且沉积物DOM释放到上层水体后将如何影响微生物群落的结构也不清晰。为了研究沉积物DOM的生物可利用性,以及沉积物DOM与上层海水微生物群落之间的相互关系,本论文采集了厦门近岸沉积物表层DOM ...
周文楚
core  

Mechanisms of carbon distribution and stability in the photosynthetic processes of plant-soil systems influenced by arbuscular mycorrhizal fungi during reclamation of mining areas [PDF]

open access: yes
Inoculation of Arbuscular Mycorrhizal Fungi (AMF) combined with vegetation restoration has become a key reclamation technology for ecological restoration in mining subsidence.
Dongdong WANG   +3 more
core   +1 more source

近海生态系统碳汇过程、调控机制及增汇模式 [PDF]

open access: yes, 2017
海洋是地球上最大的碳库,发挥着全球气候变化缓冲器的作用.蓝色碳汇,简称蓝碳,即由海洋生态系统捕获的碳(主要是有机碳),是海洋储碳的重要机制之一.; 蓝碳最初认识的形式是可见的海岸带植物固碳.其实之前没有得到足够重视的、看不见的微型生物(浮游植物、细菌、古菌、病毒、原生动物)占海洋生物量90%; 以上,是蓝碳的主要贡献者.中国陆架边缘海占国土总面积的1/3,碳汇潜力巨大,亟待研发.本文以近海生态系统碳汇过程、调控机制及增汇模式为主线,论述; 了近海生态系统结构与碳循环功能特征、碳汇形成过程与机理 ...
严重玲   +16 more
core   +3 more sources

海洋储碳机制及区域碳氮硫循环耦合对全球变化的响应 [PDF]

open access: yes, 2017
海洋作为地球表面最大的活跃碳库,其碳收支在很大程度上决定了全球气候变化的走向.然而,海洋碳循环是一个多时空尺度的过程,相关的碳收支估算存在很大的; 不确定性,其控制过程与机理更是一个颇具挑战性的难题(胡敦欣等, 2015),特别是海洋储碳机制,是研究全球变化及应对的核心内容之一 ...
刘纪化   +7 more
core  

Taiwan as an example for “Source to Sink” processes of particulate organic matter in high mountainous river and surrounding marginal seas [PDF]

open access: yes, 2017
陆海交互界面“源到汇”沉积体系由高山环境延伸,横跨大陆边缘,最后汇入深海,是侵蚀和沉积过程发生的主要位置,构成地球沉积循环的主要组成部分,同时,也是连接地球系统长时间尺度碳循环的枢纽。在轨道时间尺度上,大气二氧化碳的含量主要取决于化石碳的氧化以及光合作用所固定碳的埋藏这二者之间的平衡。而陆海交互界面是这两个过程发生的主要场所,因此理清陆海交互界面碳的迁移转化过程对定量全球碳收支至关重要。高山岛屿(high-standingislands)的河流流域面积占地球面积不到3 ...
郑立伟
core  

黄土丘陵区典型沟道侵蚀诱发的CO2通量估算

open access: yesShuitu Baochi Xuebao, 2022
以黄土丘陵区典型侵蚀沟道为对象,基于沟道剖面有机碳和137Cs数据,采用碳库重分布模型估算了典型沟道侵蚀诱发的CO2通量,并通过检验模型预测效率、解析影响因子,提出了模型校正的思路。结果表明:(1)在长期侵蚀作用下,沟道侵蚀区和沉积区均表现为剧烈的侵蚀效应,侵蚀区侵蚀速率介于30.99~46.44 mm/a,沉积区侵蚀速率介于34.20~37.88 mm/a,沉积区土壤流失速率略小于侵蚀区;(2)碳库重分布模型估算显示,侵蚀区与沉积区均表现为较强烈的碳源效应,侵蚀区CO2通量介于18.41~28.44 ...
郝旺林
doaj  

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