Community and bacterial respiration in the South China Sea and Fujian coastal waters [PDF]
, 2014 采用黑白瓶方法，分别于2012年夏季、2013年夏季两个航次，开展了群落总初级生产力(Grossprimaryproduction,GPP)和群落呼吸(Communityrespira-tion,CR)的调查研究，初步划分了南海北部和西部自养、异养区域。并在厦门近岸水体开展了浮游生物群落代谢因子对温度变化响应机制的研究，取得如下主要结果： 1、南海北部夏季浮游生物群落代谢 南海北部夏季总的初级生产力GPP水柱积分平均值为106.6±7.51mmolO2m-2d-1(mean±SE，以下同 ...
王娜
core
Shuitu Baochi Xuebao, 2004 土壤有机碳是陆地生态系统的重要碳库之一,增加土壤中碳的储量对于减缓全球变暖的趋势具有重要意义。通过野外样品采集及室内分析,比较了退耕1年,3年,5年,7年,10年,15年和25年7个不同年限撂荒地的土壤有机碳及其活性的变化。结果表明:耕地撂荒后,表层土壤有机碳及活性有机碳的含量随着退耕年限的增长呈增加趋势;土壤中的腐殖质以胡敏素为主,占总有机碳含量的70%～80%;深度在40cm以上的表土,腐殖酸总量及各组分含量都随着撂荒年限的增长呈递增趋势。说明耕地撂荒后,土壤中有机碳的含量明显增高 ...
贾松伟 贺秀斌 陈云明
doaj
Analysis of complete genome sequence and cloning, expression of key enzymes in formaldehyde metabolic pathways of the deep-sea bacteria Pseudomonas sp.IOFA1 [PDF]
, 2013 深海中蕴藏着巨大的生物资源。生境独特多样的深海沉积和洋壳环境蕴育了海底深部生物圈微生物的高度多样性，表现为物种、基因、生理生化和生态功能的多样性。海底深部生物圈已经成为生物技术开发的一个重要领域。 从深海沉积物中筛选到一株可高效降解甲醛的菌株（Pseudomonassp.IOFA1），本文对该菌株进行了全基因组的测序，并对该菌株甲醛降解途径中的关键酶醇脱氢酶，甲醛歧化酶和甲酸脱氢酶展开研究。首先利用第二代高通量测序技术solexa对该菌株进行了全基因组测序以及基因预测与注释。测序结果表明 ...
杨敏
core
Effects of Different Logging Residue Treatments on Acid Hydrolyzed Soil Organic Carbon Fractions and Soil Microbial Communities in a Chinese Fir Plantation [PDF]
[Objective] Acid hydrolyzed soil organic carbon fractions are important in soil, and the changes of their contents will affect soil microbial community composition.
GUO Jianfen +5 more
core +1 more source
Shuitu Baochi Xuebao, 2019 通过5年田间定位试验，研究了不同玉米秸秆还田方式对黑钙土土壤团聚体含量、稳定性和团聚体有机碳贡献率的影响。结果表明：与秸秆不还田（CK）比较，秸秆还田处理能显著提高土壤大团聚体（>250 μm）含量、团聚体平均重量直径（MWD）和几何平均直径（GMD）（P2 000 ...
高洪军 +5 more
doaj
Research on carbon emission accounting model for open-pit mines in alpine ecologically fragile areas [PDF]
To accurately measure carbon emissions from open-pit mines in alpine ecologically fragile areas, a rigorous and comprehensive accounting method is essential. This method must account for both direct emissions from mining operations and indirect emissions
Bin BAI +5 more
core +1 more source
Shuitu Baochi Xuebao, 2011 以19年的长期定位施肥土壤为材料,研究不同施肥管理:不施肥(CK),施无机肥(N、NP、NK、NPK),施有机肥(OM),有机-无机配施(F、F’)下稻田耕层土壤有机碳库组分及含量变化。结果表明:不同施肥方式对土壤有机碳及其组分有显著影响,土壤总有机碳(TOC)变化趋势为有机无机配施(平均12.34g/kg)>单施有机肥(平均12.15g/kg)>无肥(平均10.56g/kg)>化肥(平均9.78g/kg);有机肥和化肥配施土壤微生物量碳(SMBC)、水溶性有机碳(WSOC)、轻组有机碳(LFOC ...
廖敏 +7 more
doaj
Simulation and analysis method for dynamic fatigue reliability of shovel stick for mining electric shovel [PDF]
In order to reduce the stick fracture caused by random load during the operation of the electric shovel in open-pit mines, a simulation and analysis method of the dynamic reliability of the stick of the electric shovel in the mining was proposed.
Chong CHEN +3 more
core +1 more source
Shuitu Baochi Xuebao[目的] 为探讨菇渣有机肥与脱硫石膏对盐碱土有机碳组分及碳库管理指数的影响。[方法] 以黄河三角洲新垦殖小麦—玉米轮作地为研究对象,采用随机区组试验方法,设置不施肥(CK)、农民常用施肥(CN)、菇渣有机肥(MCOF)、菇渣有机肥+脱硫石膏(MCOG)4个处理,通过3年田间施肥处理。[结果] 菇渣有机肥与脱硫石膏配施显著降低0—20 cm土壤盐碱度,提高土壤氮磷钾养分含量和阳离子交换量(p＜0.05);各处理0—20 cm土层总有机碳(TOC)、易氧化有机碳(EOC)、微生物量碳(MBC)含量高于20 ...
李传福 +7 more
doaj
Synergistic benefit analysis of carbon sink capacity and biodiversity function of artificial ecosystems in mining reclamation sites [PDF]
Land reclamation in mining areas is an inevitable measure to accelerate the restoration of biodiversity, promote the transformation and development of mining areas, and realize the transformation of carbon sources into carbon sinks. There are few studies
Cong MEN +5 more
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