Results 31 to 40 of about 2,686 (157)

Factors influencing fine roots decomposition rates in response to nitrogen addition vary across root characteristics

open access: yesFunctional Ecology, Volume 39, Issue 12, Page 3504-3516, December 2025.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Nitrogen (N) deposition strongly affects litter decomposition and nutrient release, thereby reshaping carbon cycling in terrestrial ecosystems. Although most studies have focused on above‐ground litter, the effects of N addition on fine root decomposition and their ...
Yuneng Wang   +5 more
wiley   +1 more source

Extracellular Enzyme Stoichiometric Characteristics of Subtropical Forest Soil under Forest Fire Disturbance [PDF]

open access: yes
[Objective] Forest fire, as the primary natural and human-induced disturbance in subtropical forests, seriously affects the soil biochemical cycle.
GUO Qiling   +5 more
core   +1 more source

Guard‐cell expression of abscisic acid receptors for engineering water‐use‐efficient plants without trade‐offs in growth

open access: yesNew Phytologist, Volume 248, Issue 2, Page 690-705, October 2025.
Summary Abscisic acid (ABA) induces stomatal closure, reducing transpirational water loss, a critical adaptation for agriculture under drought. However, ABA is often viewed cautiously as stomatal closure limits CO2 uptake for photosynthesis and growth.
Jinghui Liu   +4 more
wiley   +1 more source

后续施肥措施改变对红壤性水稻土团聚体有机碳组分的影响

open access: yesShuitu Baochi Xuebao, 2016
利用一个长达30 年且已进行适当变更的长期定位施肥试验,采用物理方法对团聚体有机碳进行分组,并运用δ13C自然丰度方法,研究长期施用高量有机肥、常量有机肥、化肥及当其施肥措施改变(化改常、常改高、高改化、常改化)3年后红壤性水稻土团聚体有机碳组分含量及其分布比例的变化规律,以期为调控稻田土壤肥力及红壤性水稻土有机碳库的管理提供理论依据。结果表明:与施用化肥30年相比,长期施用有机肥显著提高了红壤性水稻土团聚体总有机碳、粗游离态颗粒有机碳(cfPOC)、细游离态颗粒有机碳(ffPOC)、闭蓄态颗粒有机碳 ...
张 艺, 尹力初, 戴 齐
doaj  

长期施用畜禽粪对黑土有机无机复合体动态变化的影响

open access: yesShuitu Baochi Xuebao, 2022
为探究不同畜禽粪长期施用后,对黑土有机无机复合状况及有机碳在土壤有机无机复合体中分布的动态影响,以吉林农业大学教学实验田始于2010年的长期定位试验下的黑土作为研究对象。试验共设4个处理,分别为施用鸡粪(JF)、施用牛粪(NF)、施用猪粪(ZF)以及对照处理(CK)。土壤样品选取连续施用畜禽粪的第1年(2010年)、第3年(2012年)、第6年(2015年)、第9年(2018年)和第11年(2020年)土壤,测定不同处理下黑土重组有机碳含量、有机无机复合度、胶散复合体含量以及有机碳在各组分复合体中的分布。
孟庆龙   +5 more
doaj  

Drought decreases carbon flux but not transport speed of newly fixed carbon from leaves to sinks in a giant bamboo forest

open access: yesJournal of Ecology, Volume 113, Issue 7, Page 1746-1759, July 2025.
In forests dominated by large clonal plants, such as giant moso bamboo, drought can alter the allocation of newly assimilated C within the tissues of source ramet but may not affect its allocation among interconnected ramets or within plant–soil systems.
Xiaogai Ge   +9 more
wiley   +1 more source

Distribution Characteristics of Soil Organic Carbon and Its Composition in Suaeda salsa Wetland in the Yellow River Delta [PDF]

open access: yes, 2013
应用物理分组方法研究了黄河三角洲典型碱蓬湿地土壤有机碳及其组分分布特征.结果表明,研究区土壤重组有机碳是土壤有机碳的主要组成部分,土壤重组有机碳含量、土壤颗粒有机碳含量与土壤总有机碳含量都显著正相关.研究区土壤轻组组分比例和含量范围分别在0.008%~0.15%和0.10~0.40 g·kg-1,颗粒有机碳分配比例范围为8.83%~30.58%,说明黄河三角洲碱蓬湿地土壤有机碳中非保护性组分较低 ...
于君宝, 管博, 董洪芳
core  

Effect of Reforestation Tree Species on the Distribution and Stability of Purple Soil Aggregates [PDF]

open access: yes
[Objective] Afforestation following the Grain for Green initiative is a crucial measure to improve soil structure and reduce soil erosion. Understanding the mechanisms of the effects of afforestation tree species on the formation of soil aggregates can ...
HAN Guangzhong   +4 more
core   +1 more source

Tree mycorrhizal associations regulate relationships between plant and microbial communities and soil organic carbon stocks at local scales in a temperate forest

open access: yesFunctional Ecology, Volume 39, Issue 6, Page 1550-1566, June 2025.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Forests store substantial amounts of soil organic carbon (SOC), but SOC stocks differ strongly between forest ecosystems dominated by arbuscular mycorrhizal (AM) or ectomycorrhizal (EcM) fungi.
Mengxu Zhang   +10 more
wiley   +1 more source

黄土高原典型植被根系对土壤团聚体及其有机碳组分的影响

open access: yesShuitu Baochi Xuebao, 2023
为探究植被根系作用下不同粒径团聚体内碳组分含量的相对变化及其主要影响因素,以黄土高原地区自然生长的直根系植物铁杆蒿(Artemisia gmelinii Web.)和须根系植物长芒草(Stipa bungeana Trin.)典型植被为研究对象,以退耕1年撂荒地为对照样地(CK),测定各粒径团聚体质量占比及其土壤有机碳(SOC)、颗粒态有机碳(POC)、矿物结合态有机碳(MAOC)含量,分析土壤基本理化性质和根系特征参数与不同粒径团聚体碳组分特征间的相互关系。结果表明:(1)与撂荒地相比 ...
于雯霏   +4 more
doaj  

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