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Journal of Oceanology and Limnology 2024年第1期42卷 174-186页

作者： Yufei ZHANG Xianjun LI Yuhui LI Shiqi LIU Yanrui CHEN Miao JIA Xin WANG Lu ZHANG Qiping GAO Liang ZHANG Daoyong YU Baosheng GE State Key Laboratory of Heavy Oil Processing and Center for Bioengineering and Biotechnology China University of Petroleum(East China)Qingdao 266580China Tongwei Co. Ltd.Healthy Aquaculture Key Laboratory of Sichuan ProvinceChengdu 610093China

Light plays an important role in the photosynthesis and metabolic process of ***,how different light conditions regulate the biomass production and protein accumulation of microalgae is mostly *** this study,the influence of different light conditions,including light colors,densities,and light:dark cycles on the cell growth and biochemical composition of Spirulina platensis was symmetrically *** different colored lights,*** all shows an increase trend within the increased light intensity ranges;however,each showing different optimal light *** the same light intensity,different colored lights show different growth rate of *** following the sequence of red>white>green>yellow>*** maximum growth rate and protein accumulation were determined as 21.88 and 5.10 mg/(L·d)when illuminated under red *** energy efficiency of different light sources was calculated and ranked as red>white>blue≈green>*** analysis suggests that red light can promote cell growth and protein accumulation by upregulating genes related to photosynthesis,carbon fixation,and C-N metabolism *** study provides a conducive and efficient way to promote biomass production and protein accumulation of *** by regulating light conditions.

关键词： microalgae light emitting diode protein accumulation biomass production transcriptomic analysis

biomass production of hybrid aspen growing on former farm land in Sweden

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Journal of Forestry Research 2013年第2期24卷 237-246页

作者： Tord Johansson Department of Energy and Technology Swedish University of Agricultural Sciences

We construct dry weight equations for hybrid aspen growing on former farmland in Sweden. Dry weight equations for fractions of hybrid aspen trees were also made. We estimated biomass production in 24 stands. The stands were located in Sweden at latitudes ranging from 55 to 60o N. The mean age was 18 years （range 15-23）, the mean stand density 1090 stems·ha-1 （range 378 2374）, and the mean diameter at breast height （over bark） 178 mm （range 85 244 mm）. Soil types in the hybrid aspen stands were mainly clay （21 stands）, tills （2 stands） and other （1 stand）. The mean total standing dry weight above stump level （≈ 200 mm） for the hybrid aspen stands was 135±53 t·ha-1 with a range of 42 219 t·ha-1 . In addition to estimating conventional dry weights of trees and tree components, basic density, specific leaf area （SLA）, projected leaf area （PLA） and leaf area index （LAI） were estimated and were in agreement with published figures.

关键词： basic density biomass production farmland hybrid aspen MAI plantation forestry

The importance of proleptic branch traits in biomass production of poplar in high-density plantations

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Journal of Forestry Research 2022年第2期33卷 463-473页

作者： Changjun Ding Ningning Wang Qinjun Huang Weixi Zhang Juan Huang Suli Yan Boyi Chen Dejun Liang Yufeng Dong Yingbai Shen Xiaohua Su State Key Laboratory of Tree Genetics and Breeding Research Institute of ForestryChinese Academy of ForestryBeijingPeople’s Republic of China Key Laboratory of Tree Breeding and Cultivation of State Forestry Administration Research Institute of ForestryChinese Academy of ForestryBeijingPeople’s Republic of China College of Biological Sciences and Technology Beijing Forestry UniversityBeijing 100083People’s Republic of China National Engineering Laboratory for Tree Breeding Beijing Forestry UniversityBeijing 100083People’s Republic of China Liaoning Provincial Poplar Institute Gaizhou 115200LiaoningPeople’s Republic of China Shandong Provincial Key Laboratory of Forest Tree Genetic Improvement Shandong Academy of ForestryJinan 250014ShandongPeople’s Republic of China

Branch phenotypic traits determine tree crown architecture,which in turn governs leaf display,light interception,and biomass *** and proleptic branches are the obviously different branch phenotypes in the poplar *** studies have focused on the influence of sylleptic branch numbers(SBN)on biomass production,but the research on the influence of proleptic branch phenotypes was only a *** explore the relationship between proleptic branch traits and biomass generation production in a high-density poplar plantation,we investigated the branch phenotypic traits of three poplar genotypes,all of which have high survival rates in forests(>95%)and significantly different crown architecture and biomass performance in the high-density plantations(1667 stems ha−1).The plantation site was established in 2007.A terrestrial laser scanner was used to measure branch characteristics such as length,angle of origin and termination,and azi-muth angle.A hierarchical cluster analysis performed on branch characteristics showed that SBN,crown depth,and proleptic branch curvature(PBC)were clustered with bio-mass production and leaf area index(LAI).Among all of the monitored traits,PBC played the second most important role in biomass production after SBN and was significantly correlated with SBN,LAI,and biomass *** positive correlation between PBC and SBN indicated that a larger PBC was associated with more sylleptic branches within the monitored genotypes planted in the high-density plantation,providing greater leaf area and biomass *** results of this study will improve the identification of high-production poplar varieties for cultivation in high-density plantations for biofuel production.

关键词： Populous Crown architecture Sylleptic branch Proleptic branch biomass production Terrestrial laser scanner

Effects of solar ultraviolet radiation on the photochemical efficiency, photosynthetic pigments and biomass production of Spirulina platensis

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Progress in Natural Science:Materials International 2005年第5期15卷 477-480页

作者： Teruo WATANABE China Haikou 570102 Haikou International Commercial Centre 38 Hainan DIC Microalgae Co. Ltd.

Effects of solar ultraviolet radiation (UVR) on Spirulina platensis were studied by investigating its photochemical efficiency, photosynthetic pigments and biomass production while exposed to full spectrum solar radiation or depleted of UVR for understanding how and to what extent UVR influences its photosynthetic physiology and production. It was found that UVR brought about an extra inhibition of photochemical efficiency by 26%—30%. The greatest inhibition of photochemical efficiency in S. platensis was observed at noontime, and then recovered to some extent in late afternoon no matter which treatment they were exposed to. The contents of chlorophyll a, phycocyanin and carotenoids increased during initial stage of the exposure, but decreased with elongated exposure. UVR decreased the biomass yield by about 6%. It indicated that filtering out UVR of solar radiation would raise the productivity of S. platensis, which is an important factor that should be considered in the production.

关键词： ultraviolet radiation Spirulina platensis photochemical efficiency biomass production pigments.

Autumn nitrogen enrichment destabilizes ecosystem biomass production in a semiarid grassland

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Fundamental Research 2023年第2期3卷 170-178页

作者： Yuqiu Zhang Zhengru Ren Haining Lu Xu Chen Ruoxuan Liu Yunhai Zhang State Key Laboratory of Vegetation and Environmental Change Institute of BotanyChinese Academy of SciencesBeijing 100093China University of Chinese Academy of Sciences Yuquan RoadBeijing 100049China

Nitrogen(N)deposition decreases the temporal stability of ecosystem aboveground biomass production(ecosystem stability).However,little is known about how the responses of ecosystem stability differ based on seasonal N *** adding N in autumn,winter,or growing season,from October 2014 to May 2020,in a temperate grassland in northern China,we found that only N addition in autumn resulted in a significantly positive correlation between ecosystem mean aboveground net primary productivity(ANPP)and its standard deviation and significantly reduced ecosystem *** N-induced reduction in ecosystem stability was associated with the vanished negative effect of community-wide species asynchrony(asynchronous dynamics among populations to environmental perturbations)on the standard deviation of ecosystem ANPP in combination with the emerged positive effect of dominance(Simpson's dominance index that indicates the relative weight of dominant species in a community).Our findings indicate that autumn N addition might overestimate the negative effect of annual atmospheric N deposition on ecosystem stability,suggesting that to better evaluate the influence of N deposition in temperate grasslands,both field experiments and global modeling should consider not only the annual N load but also its seasonal ***,further studies should pay more attention to the alteration in the ecosystem temporal deviations,which might be more sensitive to human-induced environmental changes.

关键词： biomass production Community stability Inner Mongolia Seasonal nitrogen addition Species asynchrony Steppe Variability

Science Letters:Culture of Spirulina platensis in human urine for biomass production and O_2 evolution

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2006年第1期7卷 34-37页

作者：冯道伦吴祖成 Department of Environmental Engineering Zhejiang UniversityHangzhou 310027 China

Attempts were made to culture Spirulina platensis in human urine directly to achieve biomass production and O2 evolution, for potential application to nutrient regeneration and air revitalization in life support system. The culture results showed that Spirulinaplatensis grows successfully in diluted human urine, and yields maximal biomass at urine dilution ratios of 140-240. Accumulation of lipid and decreasing of protein occurred due to N deficiency. O2 release rate of Spirulina platensis in diluted human urine was higher than that in Zarrouk medium.

关键词： Spirulina platensis Human urine biomass production O2 evolution Life support system

Seasonal Transpiration and biomass production

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Journal of Environmental Science and Engineering(A) 2013年第5期2卷 315-321页

作者： Viliam Novak Institute of Hydrology Slovak Academy of Sciences Radianska 75 831 02 Bratislava 3 SIovakia

This paper presents a method for estimating plant production as a function of the seasonal transpiration total. Transpiration was calculated retrospectively with the HYDRUS-ET software package. This approach is based on empirical relationships between seasonal transpiration totals of particular canopy and biomass production （yield） grown under standard conditions. Novelty of this approach is the development of the tool to evaluate the biomass production as related to the seasonal transpiration. The cumulative frequency distribution of seasonal transpiration was chosen as the basic characteristic of the soil water regime. This approach allows one to estimate cumulative frequency curves of actual and potential yields. The difference between these two curves is the cumulative frequency distribution of possible yield increase by optimization of the soil water regime. The method permits a cost-benefit analysis by comparing expected yield increases to the investment and operational expenses of the newly designed irrigation/drainage system, or of newly invoked water management practices,

关键词： Soil water regime transpiration biomass production mathematical modeling.

Test of Culture and biomass production of the Entomopathogenic Fungus Beauveria bassiana （Bals.-Criv.）（Vu//., 1912） on Lactoserm, Margine and Olive Pomace

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Journal of Environmental Science and Engineering(B) 2015年第10期4卷 547-552页

作者： Sahir-Halouane Fatma Benzina Farida Kebour Sara Drai Sara Laboratory of Valorization and Conservation of Biologieal Resources University M'hammed Bougara Boumerdes 3500 Algeria Department of Biology University M'hammed Bougara Boumerdes 3500 Algeria

Entomopathogenic microorganisms occupy an important place among the alternative methods of fighting against pests insect. The fungus Beauveria bassiana is an agent naturally present in ecosystems. It has potential to control pest populations. In the context of biological control, the present work aims to the study of linear growth of Beauveria bassiana on different natural environments from the food industry. They are the raw whey, water and pomace, and followed the development of the fungus through a trial production of biomass on deproteinized whey.

关键词： Beauveria bassiana entomopathogenic biomass production whey vegetable olive pomace.

Litterfall production modeling based on climatic variables and nutrient return from stands of Eucalyptusgrandis Hill ex Maiden and Pinustaeda L.

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JOURNAL OF FORESTRY RESEARCH 2024年第1期35卷 1-11页

作者： Baietto, Andres Hirigoyen, Andres Hernandez, Jorge del Pino, Amabelia Univ Republica Fac Agron Forest Dept Montevideo 12900 Uruguay INIA Natl Agr Res Inst Natl Res Program Forest Prod Tacuarembo 97000 Uruguay Univ Republica Fac Agron Soil & Water Dept Montevideo 12900 Uruguay

Native grasslands in the Pampas of South America are increasingly being replaced by Eucalyptus and Pinus stands. The short rotation regimes used for the stands require high nutrient levels, with litterfall being a major source of nutrient return. To model the litterfall production using climatic variables and assess the nutrient return in 14-year-old Eucalyptusgrandis and Pinustaeda stands, we measured litter production over 2 years, using conical litter traps, and monitored climatic variables. Mean temperature, accumulated precipitation, and mean maximum vapor pressure deficit at the seasonal level influenced litterfall production by ***; seasonal accumulated precipitation and mean maximum temperature affected litterfall by ***. The regression tree modeling based on these climatic variables had great accuracy and predictive power for *** (N = 33; MAE (mean absolute error) = 0.65; RMSE (root mean square error) = 0.91; R2 = 0.71) and *** (N = 108; MAE = 1.50; RMSE = 1.59; R-2 = 0.72). The nutrient return followed a similar pattern to litterfall deposition, as well as the order of importance of macronutrients (***: Ca > N > K > Mg > P; ***: N > Ca > K > Mg > P) and micronutrients (*** and ***: Mn > Fe > Zn > Cu) in both species. This study constitutes a first approximation of factors that affect litterfall and nutrient return in these systems.

关键词： Afforestation Litterfall Nutrient recycling Climate modeling Myrtaceae Pinaceae biomass production FORESTS PLANTATIONS DYNAMICS PATTERNS WATER FALL DECOMPOSITION TEMPERATURE MANAGEMENT

Selection and characterization of eight freshwater green algae strains for synchronous water purification and lipid production

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Frontiers of Environmental Science & Engineering 2016年第3期10卷 548-558页

作者： Jingjing ZHAN Qiao ZHANG Momei QIN Yu HONG Beijing Key Laboratory for Source Control Technology of Water Pollution College of Environmental Science and Engineering Beijing Forestry University Beijing 100083 China State Environmental Protection Key Laboratory of Drinking Water Source Management and Technology Shenzhen Key Laboratory of Drinking Water Source Safety Control Shenzhen Research Academy of Environmental Sciences Shenzhen 518001 China

The objective of this study is to select and characterize the candidate for synchronous water purification and lipid production from eight freshwater microalgae strains （Chlorella sp. HQ, C. emersonii, C. pyrenoidosa, C. vulgaris, Scenedesmus dimorphus, S. quadricauda, S. obiquus, Scenedesmus sp. LX1）. The strains Chlorella sp. HQ, C. pyrenoidesa, and S. obliquus showed superiority in biomass accumulation, while the top biomass producers did not correspond to the top lipid producers. S. quadricauda achieved higher lipid content （66.1%）, and Chlorella sp. HQ and S. dimorphus ranked down in sequence, with lipid content above 30%. Considering nutrient removal ability （total nitrogen （TN）： 52.97%; total phosphorus （TP）： 84.81%）, the newly isolated microalga Chlorella sp. HQ was the possible candidate for water purification coupled with lipid production. To further investigate the lipid producing and nutrient removal mechanism of candidate microalga, the ultra structural changes especially the lipid droplets under different water qualities （different TN and TP concentrations） were characterized. The results elucidate the nutrient-deficiency （TN： 3.0 mg·L^-1; TP： 0.3 mg·L^-1） condition was in favor of forming lipid bodies in Chlorella sp. HQ at the sub-cellular level, while the biomass production was inhibited due to the decrease in chloroplast number which could further suppress the nutrient removal effect. Finally, a two- phase cultivation process （a nutrient replete phase to produce biomass followed by a nutrient deplete phase to enhance lipid content） was conducted in a photo-bioreactor for Chlorella sp. HQ to serve for algae-based synchronous biodiesel production and wastewater purification.

关键词： freshwater microalgae biomass production lipid accumulation nutrient removal