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Atmospheric nitrogen deposition affects forest plant and soil system carbon:nitrogen:phosphorus stoichiometric flexibility:A meta-analysis

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Forest Ecosystems 2024年第3期11卷 307-317页

作者： Xiyan Jiang Xiaojing Wang Yaqi Qiao Yi Cao Yan Jiao An Yang Mengzhou Liu Lei Ma Mengya Song shenglei fu Key Laboratory of Geospatial Technology for the Middle and Lower Yellow River Regions College of Geography and Environmental ScienceHenan UniversityKaifeng475004China Henan Key Laboratory of Integrated Air Pollution Control and Ecological Security College of Geography and Environmental ScienceHenan UniversityKaifeng475004China Henan Dabieshan National Field Observation and Research Station of Forest Ecosystem Henan UniversityZhengzhou450046China

Background:Nitrogen(N)deposition affects forest stoichiometric flexibility through changing soil nutrient availability to influence plant ***,the effect of N deposition on the flexibility of carbon(C),N,and phosphorus(P)in forest plant-soil-microbe systems remains ***:We conducted a meta-analysis based on 751 pairs of observations to evaluate the responses of plant,soil and microbial biomass C,N and P nutrients and stoichiometry to N addition in different N intensity(050,50–100,>100 kg·ha^(-1)·year^(-1)of N),duration(0–5,>5 year),method(understory,canopy),and matter(ammonium N,nitrate N,organic N,mixed N).Results:N addition significantly increased plant N:P(leaf:14.98%,root:13.29%),plant C:P(leaf:6.8%,root:25.44%),soil N:P(13.94%),soil C:P(10.86%),microbial biomass N:P(23.58%),microbial biomass C:P(12.62%),but reduced plant C:N(leaf:6.49%,root:9.02%).furthermore,plant C:N:P stoichiometry changed significantly under short-term N inputs,while soil and microorganisms changed drastically under high N *** N addition primarily affected plant C:N:P stoichiometry through altering plant N content,while understory N inputs altered more by influencing soil C and P *** N significantly influenced plant and soil C:N and C:P,while ammonia N changed plant N:*** C:P and soil C:N were strongly correlated with mean annual precipitation(MAT),and the C:N:P stoichiometric flexibility in soil and plant under N addition connected with soil ***,N addition decoupled the correlations between soil microorganisms and the ***:N addition significantly increased the C:P and N:P in soil,plant,and microbial biomass,reducing plant C:N,and aggravated forest P ***,these impacts were contingent on climate types,soil layers,and N input *** findings enhance our comprehension of the plant-soil system nutrient cycling mechanisms in forest ecosystems and plant strategy responses to N deposition.

关键词： C:N:P stoichiometry Meta-analysis Forest ecosystem Nitrogen addition form Nutrient cycles

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Drought shifts soil nematode trophic groups and mediates the heterotrophic respiration

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Journal of Plant Ecology 2024年第2期17卷 100-109页

作者： Cancan Zhao Yuanhu Shao Huijie Lu Aimée T.Classen Zuyan Wang Ying Li Yanchun Liu Zhongling Yang Guoyong Li shenglei fu International Joint Research Laboratory for Global Change Ecology School of Life SciencesHenan UniversityKaifeng 475004China Henan Dabieshan National Field Observation and Research Station of Forest Ecosystem Zhengzhou 450046China Key Laboratory of Geospatial Technology for the Middle and Lower Yellow River Regions Ministry of EducationCollege of Environment and PlanningHenan UniversityKaifeng 475004China Henan Key Laboratory of Integrated Air Pollution Control and Ecological Security Kaifeng 475004China Department of Ecology and Evolutionary Biology University of MichiganAnn ArborMI 48109USA South China Botanical Garden Chinese Academy of SciencesGuangzhou 510650China Department of Natural Resource of Henan Province Institute of Natural Resources Survey and PlanningZhengzhou 450000China

As the most diverse metazoan taxa,soil nematodes serve a diversity of functions in soil food webs and thus can regulate microbial community composition and affect organic matter decomposition and nutrient turnover *** nematodes depend on water flms to access food resources,drought can negatively affect nematode-microbial food webs,yet the impacts of drought on nematode diversity and abundance and how these changes may infuence food web members and their functions are hardly ***,we coupled research along a drought gradient in arid and semiarid grasslands with a detailed intact plant-soil microcosm experiment to explore the patterns and mechanisms of how drought impacts nematode abundance and carbon footprint,microbial phospholipid fatty acid(PLFA)and heterotrophic soil ***,in the feld and the microcosm experiments,we found that nematode abundance,carbon footprint and diversity,microbial PLFA and heterotrophic respiration were reduced under drier *** addition,drought altered nematode and microbial community composition,through reducing the nematode channel ratio and increasing the relative fungivorous nematode abundance and the fungal to bacterial *** soil decomposition channel shifted from a bacterial to a fungal pathway in response to drought,indicating decelerated heterotrophic respiration under *** results highlight the important contribution of soil nematodes and their associated microbial food web to soil carbon *** fndings underscore the need to incorporate key soil fauna into terrestrial ecosystem model evaluation.

关键词： soil biota fungal energy channel bacterial energy channel carbon footprint arid grassland

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Forest soil CO_2 fluxes as a function of understory removal and N-fixing species addition

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Journal of Environmental Sciences 2011年第6期23卷 949-957页

作者： Haifang Li shenglei fu Hongting Zhao Hanping Xia Institute of Ecology South China Botanical Garden Chinese Academy of Sciences Guangzhou 510650 China College of Tourism Guilin University of Technology Guilin 541004 China E&E Applied Research LLC 3628 Oakwood Drive Longmont Colorado 80503 USA

We report on the effects of forest management practices of understory removal and N-fixing species（Cassia alata） addition on soil CO2 fluxes in an Eucalyptus urophylla plantation（EUp）,Acacia crassicarpa plantation（ACp）,10-species-mixed plantation（Tp）,and 30-species-mixed plantation（THp） using the static chamber method in southern *** forest management treatments,including（1） understory removal（UR）;（2） *** addition（CA）;（3） understory removal and replacement with ***（UR＋CA）;and（4） control without any disturbances（CK）,were applied in the above four forest plantations with three replications for each *** results showed that soil CO2 fluxes rates remained at a high level during the rainy season（from April to September）,followed by a rapid decrease after October reaching a minimum in *** CO2 fluxes were significantly higher（P 〈 0.01） in EUp（132.6 mg/（***）） and ACp（139.8 mg/（***）） than in Tp（94.0 mg/（***）） and THp（102.9 mg/（***））.Soil CO2 fluxes in UR and CA were significantly higher（P 〈 0.01） among the four treatments,with values of 105.7,120.4,133.6 and 112.2 mg/（***） for UR＋CA,UR,CA and CK,*** CO2 fluxes were positively correlated with soil temperature（P 〈 0.01）,soil moisture（P 〈 0.01）,NO3？-N（P 〈 0.05）,and litterfall（P 〈 0.01）,indicating that all these factors might be important controlling variables for soil CO2 *** study sheds some light on our understanding of soil CO2 flux dynamics in forest plantations under various management practices.

关键词： soil C02 fluxes forest management practices understory removal N-fixing species addition forest plantation

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Applications of physical methods in estimation of soil biota and soil organic matter

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Soil Ecology Letters 2020年第3期2卷 165-175页

作者： Chagovetc Sergei shenglei fu Key Laboratory of Geospatial Technology for the Middle and Lower Yellow River Regions Ministry of EducationCollege of Environment and PlanningHenan UniversityKaifeng 475004China Henan Key Laboratory of Integrated Air Pollution Control and Ecological Security Henan UniversityKaifeng 475004China

Soil biota is the living component of soil organic matter(SOM),and plays a key role in the decomposition of *** soil biota and SOM are indicators of soil fertility and soil ***,they both are sensitive to soil *** researchers developed various technologies to detect soil biota and SOM,they are mostly destructive and cause disturbance to soil,which may not reflect the actual situation of soil biota and ***,here we mostly focused on the non-destructive physical methods for estimating soil biota and SOM and discussed their advantages and *** methods include but not limited to acoustic detection,radio frequency identification,radioactive tagging,hyperspectral sensing and electron energy loss *** addition,we pointed out the current research problems and the potential research directions for applications of physical methods in estimation of soil biota and SOM.

关键词： Soil organic matter Soil biota Advanced method Acoustic method Spectroscopy Tagging

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Natural recovery of different areas of a deserted quarry in South China

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Journal of Environmental Sciences 2008年第4期20卷 476-481页

作者： DUAN Wenjun REN Hai fu shenglei WANG Jun YANG Long ZHANG Jinping Heshan National Field Research Station of Forest Ecosystem South China Botanical Garden the Chinese Academy of Sciences Guangzhou 510650 China Graduate University of the Chinese Academy of Sciences Beijing 100039 China

A quarry is a surface mining operated place, which produces enormous quantifies of gravel, limestone, and other materials for industrial and construction applications. Restoration and revegetation of deserted quarries are becoming increasingly important. Three areas of a typical quarry in South China： terrace for crushed materials （terrace）, spoiled mound, and remaining side slope, were investigated, to compare the existing plant species and to study the relationship between environmental factors and revegetation. The plant species composition of these three areas was found to differ significantly after eight years of natural recovery. The typical plant communities found over them were composed of gramineous herbs, ferns, and shrubs. Soil organic matter, soil moisture, and soil bulk density were considered to be the major determining factors for vegetation succession. There existed abiotic and biotic thresholds during quarrying restoration. Suggestions had been presented that could have accelerated the process of natural recovery in quarries.

关键词： natural recovery quarry vegetation environment-vegetation relationships

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深远海大兆瓦级半潜式风机基础运动特性数值模拟及试验研究

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中国海上油气 2024年第5期36卷 206-217页

作者：黄检易丛白雪平葛晗吕柏呈高巍付升雷齐磊中海油研究总院有限责任公司浙江大学海洋学院中海油能源发展股份有限公司清洁能源分公司

针对水深百米以上的深远海浮式风电开发需求，本文面向可搭载大兆瓦级(15 MW)风机的新型半潜式风机基础的运动特性展开研究。利用AQWA软件建立了该基础与系泊系统的数值模型，基于南海实际海况确定了风机塔筒的载荷，并开展了缩尺比为1... 详细信息

针对水深百米以上的深远海浮式风电开发需求，本文面向可搭载大兆瓦级(15 MW)风机的新型半潜式风机基础的运动特性展开研究。利用AQWA软件建立了该基础与系泊系统的数值模型，基于南海实际海况确定了风机塔筒的载荷，并开展了缩尺比为1∶64的水池模型试验，验证了数值模型计算的准确性；基于验证的数值模型分析了新型风机基础在南海恶劣海况下的运动特性及系泊张力，发现该新型风机基础的运动极值和系泊张力均满足规范要求。相同海况下，新型风机基础与经典半潜式风机基础OC4-DeepCwind(三浮筒平台)的运动性能及系泊缆张力对比结果表明：发电工况下，新型风机基础的垂荡和倾角的极值较三浮筒平台的分别下降62.8%和81.3%;停机工况下，垂荡和倾角的极值则分别下降46.1%和41.4%,充分说明该新型风机基础具有优越的运动性能；而在停机工况下1、2号缆系泊张力最大值分别下降17.4%和9.6%,大大降低了系泊系统的设计难度。研究结果为中国深远海浮式风电开发船型的选择提供了借鉴。

关键词：深远海风电半潜式风机基础数值模拟模型试验运动特性系泊张力

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Aboveground biomass and corresponding carbon sequestration ability of four major forest types in south China

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Chinese Science Bulletin 2013年第13期58卷 1551-1557页

作者： CHEN QingQing XU WeiQiang LI ShengGong fu shenglei YAN JunHua South China Botanical Garden Chinese Academy of Sciences Graduate University of Chinese Academy of Sciences Institute of Geographic Sciences and Natural Resources Research Chinese Academy of Sciences

We estimated aboveground biomass carbon (TABC) and net carbon accumulation rates (TNEP) for trees in four major forest types based on national forest inventory data collected in 1994-1998 and 1999-2003. The four types were Pinus massoniana forest, Cunninghamia lanceolata forest, hard broad-leaved evergreen forest and soft broad-leaved evergreen forest. We analyzed variations in TABC and TNEP for five stand ages (initiation, young, medium, mature and old). In both time periods, estimated TABC in all four forest types increased consistently with forest stand age and the oldest stage had the largest TABC compared with other stages. Broad-leaved forests (hard and soft) had higher TABC than needle-leaved forests (Pinus massoniana and Cunninghamia lanceolata) for each of the five age stages. The difference of TABC between broad-leaved and needle-leaved forests increased with forest stand age. Comparison of estimated TNEP by age category indicated TNEP increased from the initiation stage to the young stage, and then decreased from the mature stage to old stage in all four forest types. TNEP for any particular stage depended on the forest type; for instance, broad-leaved forests at both the mature and old stages had greater TNEP than in needle-leaved forests. A logistic curve was applied to fit the relationship between TABC and forest stand age. In each period, correlations in all four forest types were all statistically significant (P 0.95. TABC was therefore predicted by these regression functions from 2000 to 2050 and the mean TNEP during the predicted period was estimated to be about 41.14, 31.53, 75.50 and 75.68 gCm-2a-1 in Pinus massoniana forest, Cunninghamia lanceolata forest, hard broad-leaved forest and soft broad-leaved forest, respectively. Results from both forest inventory and regression prediction suggest broad-leaved forests are greater carbon sinks, and hence have greater carbon sequestration ability especially in the mature and old stages

关键词：森林类型固碳能力地上生物量中国南部常绿阔叶林森林资源清查成熟阶段马尾松林

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Soil microbial community structure and activity in a 100-year-old fertilization and crop rotation experiment

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Journal of Plant Ecology 2015年第6期8卷 623-632页

作者： Cancan Zhao shenglei fu Reji P.Mathew Kathy S.Lawrence Yucheng Feng Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems South China Botanical GardenChinese Academy of Sciences723 Xingke RoadGuangzhou 510650China State Key Laboratory of Cotton Biology Key Laboratory of Plant Stress BiologySchool of Life ScienceHenan University1 Jinming AvenueKaifengHenan 475004China Department of Crop Soil and Environmental SciencesAuburn UniversityAuburnAL 36849USA Department of Entomology and Plant Pathology Auburn UniversityAuburnAL 36849USA

Aims Nitrogen(N)fertilization and lime addition may affect soil micro-bial and nematode communities and ecosystem functions through changing environmental conditions,such as soil pH and soil organic *** objectives of this experiment were to examine the impact of N input and liming on soil microbial and nematode communities and to identify the key environmental determinant of community composition in a century-old fertilization and crop rota-tion *** The field experiment consisting of a 3-year crop rotation regime was established in 1911 in southeastern *** treatments,(i)no-input control,(ii)NPK with winter legume,(iii)PK with legume and lime and(iv)NPK with legume and lime,were included in this *** samples collected at the 0-5 cm depth were used to determine the bacterial growth rate by the 3H-thymidine incorporation *** of 13C into neutral lipids,glycolipids and phospholipid fatty acids(PlFas)was measured after incubation of soil with 13C-labeled acetate for 24 ***-living nematodes in fresh soil were extracted using a density sucrose centrifugal flotation method and identified to trophic group *** Findingsliming resulted in a 10-fold increase in bacterial growth rates compared with the no-input control,whereas N fertilization had no significant *** analysis of PlFa profiles showed that soil microbial community composition was different among the four treatments;the difference was primarily driven by soil *** indicative of gram-negative bacteria covaried with soil pH,but not those of fungi and *** enhanced 13C incorpora-tion into neutral lipids,glycolipids and phospholipids by 2-15 *** addition,13C incorporation into 16:0,16:1ω9,18:1ω9,18:1ω7 and 18:2ω6 were greater than other PlFas,suggesting that gram-negative bacteria and fungi were more active and sensitive to simple C *** nematodes were the dominant trophic group in the soil,but no si

关键词： long-term experiment phospholipid fatty acid analysis stable isotope probing bacterial growth rate soil microbial community

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An ignored key link in greenhouse effect:Soil and soil CO_(2) slow heat loss

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Soil Ecology Letters 2020年第4期2卷 308-316页

作者： Weixin Zhang Chengde Yu Zhifeng Shen Shu Liu Suli Li Yuanhu Shao shenglei fu Key Laboratory of Geospatial Technology for the Middle and Lower Yellow River Regions Ministry of Education/College of Environment and PlanningHenan UniversityKaifeng 475004China School of Life Sciences Henan UniversityKaifeng 475004China

The ever-increasing atmospheric CO_(2) concentration is a key driver of modern global ***,the low heat capacity of atmosphere and strong convection processes in the troposphere both limit heat *** the higher heat capacity and CO_(2) concentration in soil compared to the atmosphere,the direct contributions of soil to the greenhouse effect may be *** experimentally manipulating CO_(2) concentrations both in the soil and the atmosphere,we demonstrated that the soil-retained heat and the slower soil heat transmission decrease the amount of heat energy leaking from the ***,the soil air temperature was affected by soil CO_(2) concentration,with the highest value recorded at 7500 ppm CO_(2).This study indicates that soil and soil CO_(2),together with atmospheric CO_(2),play a crucial role in the greenhouse *** spatial and temporal heterogeneity of soils and soil CO_(2) should be further investigated,given their potentially significant influence on global climate change.

关键词： Soil CO_(2)concentration Soil temperature Atmosphere temperature Soil heat loop Earth heat balance

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Interactive effects of understory removal and fertilization on soil respiration in subtropical Eucalyptus plantations

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Journal of Plant Ecology 2015年第3期8卷 284-290页

作者： Songze Wan Chenlu Zhang Yuanqi Chen Jie Zhao Xiaolin Zhu Jianping Wu Lixia Zhou Yongbiao Lin Zhanfeng Liu shenglei fu Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems South China Botanical GardenChinese Academy of ScienceXingke Road No.723Tianhe DistrictGuangzhou 510650China Graduate University of the Chinese Academy of Sciences Yuquan Road No.19Shijingshan DistrictBeijing 100049China Key laboratory of Plant Stress Biology College of Life ScienceHenan UniversityMinglun StreetJinming RoadKaifeng CityHenan 475004China Key Laboratory of Agro-ecological Processes in Subtropical Region Institute of Subtropical AgricultureChinese Academy of SciencesYuandaer Road No.644Furong DistrictChangsha 410125China Institute of Ecology&Environmental Science Nanchang Institute of TechnologyTianxiang Road NO.289Gaoxin DistrictNanchang 330099China

Aims It has been well recognized that understory vegetation plays an important role in driving forest ecosystem processes and *** subtropical plantation forests,understory removal and fertiliza-tion have been widely applied;however,our understanding on how understory removal affects soil respiration and how the process is regulated by fertilization is ***,we conducted an under-story removal experiment combined with fertilization to evaluate the effects of the two forest management practices and their inter-actions on soil respiration in subtropical forest in southern *** The study was conducted in a split-plot design with fertilization as the whole-plot factor,understory removal as the subplot factor and block as the random factor in subtropical Eucalyptus *** total,there were four treatments:control with unfertilized and intact understory(CK),understory removal but without fertilization(UR),with fertilization but without understory removal(FT)and with fertilization+understory removal(FT+UR).Eucalyptus above-and belowground biomass increment,fine root biomass,soil tempera-ture,soil moisture and soil respiration were measured in the present *** respiration(Ru)was quantified in different ways:Ru=RCK−Ru or Ru=RFT−R(FT+u);fertilization increased soil respiration(RFI)was also quantified in different ways:RFI=RFT−RCK or RFI=R(FT+u)−*** Findingsover a 2-year experiment,our data indicate that understory removal significantly decreased soil respiration,while fertilization increased soil *** removal decreased soil respiration by 28.8%under fertilization,but only 15.2%without *** significantly increased soil respiration by 23.6%with the presence of understory vegetation,and only increased by 3.7%when understory was removed,indicating that fertilization increased soil respiration mainly by increasing the contribution of the *** study advances our understanding of

关键词： understory removal fertilization interactive effects soil respiration subtropical plantation

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