Results 11 to 20 of about 1,292 (205)

Effects of interactions between anthropogenic stressors and recurring perturbations on ecosystem resilience and collapse

open access: yesConservation Biology, Volume 37, Issue 1, February 2023., 2023
Abstract Insights into declines in ecosystem resilience and their causes and effects can inform preemptive action to avoid ecosystem collapse and loss of biodiversity, ecosystem services, and human well‐being. Empirical studies of ecosystem collapse are rare and hampered by ecosystem complexity, nonlinear and lagged responses, and interactions across ...
David A. Keith   +8 more
wiley   +1 more source

Rewilding in the face of climate change

open access: yesConservation Biology, Volume 35, Issue 1, Page 155-167, February 2021., 2021
Abstract Expansion of the global protected‐area network has been proposed as a strategy to address threats from accelerating climate change and species extinction. A key step in increasing the effectiveness of such expansion is understanding how novel threats to biodiversity from climate change alter concepts such as rewilding, which have underpinned ...
Carlos Carroll, Reed F. Noss
wiley   +1 more source

果壳生物质炭的改性及其对DEP的吸附机理

open access: yesShuitu Baochi Xuebao, 2021
为探究改性前后生物质炭的理化属性变化及其对邻苯二甲酸二乙酯(DEP)的吸附机理,以椰子壳和花生壳为原料制备生物质炭,分别进行14% H3PO4改性和1.0 mol/L NaOH-30% H2O2联合改性处理。结果表明:改性后生物质炭的芳香化程度和含氧官能团含量增加,除C300N (经NaOH-H2O2改性的300℃—椰子壳生物质炭)外比表面积(SA)都增大。P800N (经NaOH-H2O2改性的800℃—花生壳生物质炭)有最大的SA (584.22 m2/g),因此对DEP的吸附亲和力最高 ...
范新会   +5 more
doaj  

Research on co-combustion behavior of sewage sludge and coal slime [PDF]

open access: yes, 2023
The treatment of the large amount of coal slime and municipal sewage sludge in Shanxi Province and even the country is facing unprecedented challenges. Clean combustion technology is the preferred method for sewage sludge-coal slime co-processing.
Biru WANG   +6 more
core   +1 more source

水洗生物炭对2种类型土壤钾素淋失的影响

open access: yesShuitu Baochi Xuebao, 2021
为了探究生物炭对潮土和砂土钾素淋失的调控效应,通过土柱淋溶模拟试验,以水洗生物炭为研究对象,比较生物炭水洗前后不同形态钾含量、表面形貌和含氧官能团变化,进而探究不同用量水洗生物炭对2种类型土壤钾素淋失的阻控效应。结果表明:水洗处理可使生物炭水溶性钾含量由13.9 g/kg降至0.06 g/kg,而对生物炭孔隙结构和表面含氧官能团影响较小。水洗生物炭对潮土和砂土水分淋失的影响受其施用量的影响,表现为低量促进、高量抑制的趋势,添加1%水洗生物炭显著增加了2种类型土壤水分淋失总量 ...
岳小松   +7 more
doaj  

土壤属性和作物生长对生物炭施用的响应和反馈研究进展

open access: yesShuitu Baochi Xuebao, 2022
生物炭作为一种土壤改良剂,近年来在提升土壤质量和作物产量方面效应良好。在全面梳理生物炭施用效果方面的最新研究基础上,总结了土壤理化性质、作物生长和产量对生物炭施用的响应和反馈规律。结果表明:(1)生物炭的来源、是否酸化、施用年限及施用量决定了施用后的土壤属性及作物产量变化幅度。一般来说,施用量增加、土壤容重降低,土壤孔隙度增加、土壤水力性质及入渗性能改善,土壤温度也增加。(2)由于土壤物理性质改变,施用生物炭最终降低了土壤表层的盐分表聚。生物炭对土壤pH的调节效果取决于两者pH的差异。此外 ...
李毅   +6 more
doaj  

磁性生物炭对土壤Cd的钝化性能研究

open access: yes生态环境与保护, 2020
本文选用玉米秸秆为原材料,利用FeSO4?7H2O和羟基磷灰石(HAP)对生物质原材料进行改性,获得磁性生物炭。在长沙县北山镇镉污染农田中,研究施加不同比例的磁性生物炭对土壤pH值、土壤有效态Cd的影响,并探讨钝化机制。其中当投加量为6.3t/ha,12.6t/ha及25.2t/ha时,pH分别提高0.32,0.60和0.90,有效态Cd分别降低-0.007mg/kg0.07mg/kg和0.18mg/kg,线性拟合发现pH和有效态之间存在明显的负相关关系,结果表明磁性生物炭能有效的提高土壤pH值 ...
成琼 杜   +5 more
semanticscholar   +1 more source

Research progress on porous materials for capturing carbon dioxide from flue gas [PDF]

open access: yes, 2023
The CO2 emission caused by fossil fuel combustion is one of the important reasons for global warming and extreme weather. At present, fossil fuel is still the primary energy in China and CO2 emission remains high. The use of low-cost and energy-efficient
Huimin GAO   +4 more
core   +1 more source

N示踪法研究生物炭施用对水稻—土壤系统氮肥去向的影响

open access: yesShuitu Baochi Xuebao, 2022
为探究施用水稻秸秆生物炭对水稻产量、氮肥利用率、氮肥残留及损失的影响,采用盆栽试验结合15N示踪技术,分析了施用水稻秸秆生物炭对水稻生物量、氮素积累量、肥料氮去向以及氨氧化微生物的影响。研究共设置5个处理:不施氮肥(N0)、单施化肥(CF)、施化肥配施0.5%生物炭(BC1)、施化肥配施1%生物炭(BC2)和施化肥配施2%生物炭(BC3)。结果表明:与CF处理相比,BC2和BC3处理均显著提高水稻产量,增产率分别为19.3%和22.0%。施用生物炭显著增加水稻氮素积累量和表观利用率 ...
陈照明   +6 more
doaj  

Characterization of poultry and swine manure-derived biochar as affected by pyrolysis temperature(热解温度对畜禽粪便制备的生物质炭性质的影响)

open access: yesZhejiang Daxue xuebao. Lixue ban, 2014
以猪粪和鸡粪为原料,研究了热解温度(200~700 ℃)对生物质炭物理和化学性质的影响.结果表明,生物质炭的得率随着热解温度的升高逐渐降低,猪粪生物质炭的得率较鸡粪高;猪粪和鸡粪生物质炭的灰分含量分别为41. 2%~70. 6%和20. 3%~48.1%.生物质炭均为中性或碱性,300~700 ℃热解所制备的生物质炭的pH值不仅与灰分含量有关,还可能与Ca含量密切相关.红外光谱表明,低温热解条件下(≤300 ℃)生物质炭中的含氧官能团与原材料相比无明显变化;但是当热解温度高于400 ℃时 ...
WANGLihua(王立华), LINQi(林琦)
doaj   +1 more source

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