Results 41 to 50 of about 1,104 (167)

Measuring the Value of Blue Carbon in China Coastal Zone [PDF]

open access: yes, 2017
自工业化以来,大气二氧化碳及其他温室气体的浓度已增加了40%,不断增 加的温室气体排放是全球气候变化的重要原因,从而对全球粮食生产以及人类的 生活和生计造成严重影响,气候变化是人类21世纪面临的重大挑战之一。研究 显示全球自然系统封存的生物碳中,超过一半是由海洋生态系统所捕获,被海洋 生态系统捕获并封存的碳称为蓝碳。维持和促进海洋生态系统封存二氧化碳的能 力是应对气候变化的关键措施之一,但是海洋生态系统在应对气候变化中的作用 被长期忽略,其中重要的原因之一是没有赋予蓝碳适宜的价值。本文在对蓝碳理 ...
易思亮
core  

Electronic Modulation of Cu Sites via Iron Incorporation in Cu5FeS4 Bimetallic Sulfide for High‐Efficiency Oxygen Reduction Reaction

open access: yesRare Metals, Volume 45, Issue 2, February 2026.
ABSTRACT The sluggish kinetics of the oxygen reduction reaction (ORR) necessitate developing oxygen electrodes with enhanced electrocatalytic activity for practical zinc–air battery applications. In this study, an iron‐doped copper sulfide electrocatalyst (CuFeNS‐PNC) anchored on metal–organic framework‐derived carbon substrates was designed, featuring
Taichong Chitboonyakasem   +4 more
wiley   +1 more source

喀斯特小流域土壤有机碳密度及碳储量空间分布异质性

open access: yesShuitu Baochi Xuebao, 2017
为阐明喀斯特小流域土壤有机碳密度分布特征及有机碳储量空间分布格局,采用野外布点采样、实验室测定和地统计学分析相结合的方法,利用2 755个详细调查的剖面样地和23 536个土壤样品,定量研究了喀斯特小流域土壤有机碳密度、碳储量的空间异质性及分布特征。结果表明:后寨河小流域表层(0—20 cm)土壤有机碳含量和密度的平均值为分别为25.07 g/kg和5.23 kg/m2,剖面土壤(0—100 cm)土壤有机碳含量和有机碳密度分别为20.71 g/kg和10.21 kg/m2 ...
张珍明, 周运超, 黄先飞, 田
doaj  

Coupling Coordination Relationship of Land Ecological Security and Prosperity Process at Border Areas in Guangxi Zhuang Autonomous Region from 2000 to 2020 [PDF]

open access: yes, 2023
[Objective] The effect of land ecological security at border areas in Guangxi Zhuang Autonomous Region, and the process for improving border areas and enriching people were evaluated scientifically, and the coupling coordination mechanism was revealed in
Huang Ronghua   +3 more
core   +1 more source

Contrasting light demands determine the coordination of plants' non‐structural carbohydrates and economic strategy over the range of solar spectral composition

open access: yesFunctional Ecology, Volume 40, Issue 2, Page 534-552, February 2026.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Non‐structural carbohydrates (NSC) are critical mediators of plant adaptation to fluctuating light environments. They are tightly coordinated with plant economic strategy, that is, leaf economics spectrum (LES) and root economics spectrum (RES).
Lulu Xie   +6 more
wiley   +1 more source

Porous Mn2O3@C Cathode With High Activity and Long Lifespan for Aqueous Zinc Ion Batteries

open access: yesRare Metals, Volume 45, Issue 1, January 2026.
ABSTRACT Manganese‐based oxides are widely employed as cathode materials for aqueous zinc ion batteries (AZIBs) due to their low toxicity and high theoretical specific capacity. However, their inherent poor electrical conductivity, coupled with the dissolution of manganese into the electrolyte, often leads to structural degradation of the cathode.
Cheng‐Jie Yin   +5 more
wiley   +1 more source

漓江流域喀斯特森林土壤碳氮磷储量分布特征及其影响因素

open access: yesShuitu Baochi Xuebao, 2023
以探明漓江流域喀斯特森林土壤的碳氮磷储量分布为目的,为保护漓江流域脆弱的喀斯特生态系统提供理论依据。在漓江上中下游各流域段的典型喀斯特森林共设置20 m×20 m的15块天然林样方,对森林植被进行每木检尺调查,采用五点采集法采集0-20,20-40 cm土层土壤,分析土壤碳氮磷储量空间分布情况及驱动因子作用途径,量化各类生物和非生物因子对区域喀斯特森林土壤养分储量分布格局形成的作用贡献。结果表明:(1)漓江流域喀斯特森林土壤碳氮磷储量平均分布表现为上游>下游>中游,在漓江流域喀斯特森林土壤中碳、氮 ...
钟建军   +7 more
doaj  

High‐Performance Sodium‐Ion Capacitors With Kinetics‐Matched Characteristics Enabled by N/O/S‐Doped Homologous Carbon Electrodes Derived From a Single Precursor

open access: yesRare Metals, Volume 45, Issue 1, January 2026.
ABSTRACT Sodium‐ion capacitors (SICs) offer high energy and power density with long cycle life, but developing kinetically compatible electrodes remains challenging. This work developed a simple and sustainable strategy to synthesize homologous carbon electrodes from the inner shells of durian husks (ISDH) for high‐performance SICs.
De‐Bing Yan   +7 more
wiley   +1 more source

Carbon Reserve and Carbon Sink Potential Estimation of Mangrove in Guangdong Province [PDF]

open access: yes
[Introduction] The mangrove ecosystem has a high carbon sequestration capacity and is an important part of the global carbon cycle. Exploring its carbon sink potential can promote the mitigation and adaptation to climate change, providing a potential ...
Fang WEN   +4 more
core   +1 more source

Sulfur‐Doped Carbon Matrix‐Coated Co1‐xS/Ni0.96S@NC Rhombic Cubes Significantly Enhanced the Storage Performance and Kinetics of Lithium/Sodium‐Ion Batteries

open access: yesRare Metals, Volume 45, Issue 1, January 2026.
ABSTRACT Metal sulfide, as a type of lithium/sodium‐ion battery material, possesses merits such as high capacity and low cost. Nevertheless, it is prone to structural changes during the cycling process, leading to volume changes and affecting electrochemical performance.
Wenjin Qin   +7 more
wiley   +1 more source

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