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Journal of Forestry Research 2021年第5期32卷 2077-2085页

作者： Sen Cao Ruiyang Hu Xialei Wu Yuhan Sun Bo Wu Hongjing Duan Huazhong Lin Mingjing Wu Luming Fang Xiaolong Yu Wei Wu Yun Li Beijing Advanced Innovation Center for Tree Breeding by Molecular Design National Engineering Laboratory for Tree BreedingCollege of Biological Sciences and TechnologyBeijing Forestry UniversityBeijing 100083People’s Republic of China Experimental Center of Forestry in North China Chinese Academy of ForestryBeijing 102300People’s Republic of China Fujian Jiangle State-owned Forestry Farm Sanming 353300FujianPeople’s Republic of China

chinese fir(Cunninghamia lanceolata(Lamb.)Hook),a fast-growing and economically important timber tree species in China,is widely used in construction,furniture,and paper manufacture but has a long breeding *** mutagens,such as ethyl methane sulfonate(EMS)and sodium azide(SA),are widely used in crops such as rice,wheat,cotton,soybean and sugarcane but their utility for tree breeding is *** this study we examined the effects of EMS and S A on chinese fir seed germination and *** fir seeds were treated with the two chemical mutagens;were planted in Jiangle County,Fujian Province,China;and their heights were measured from 2011 *** concentrations and durations of treatment with the two chemical mutagens were significantly associated with the chinese fir seedling and mortality rates,as well as with the heights of trees from the seedling stage to 3 years *** also generated 127 mutants with abnormal branches and reproductive *** report here the effects of two chemical mutagens on chinese fir breeding;our data will contribute to knowledge of the utility of EMS and SA in forestry.

关键词： Chemical mutagens chinese fir Seedling growth Seedling rate Mutants

Improving the Properties of Fast-Growing chinese fir by Vacuum Hot Pressing Treatment

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Journal of Renewable Materials 2021年第1期9卷 49-59页

作者： Lu Hong Biqing Shu Qian He Zehui Ju Haiyang Zhang Xiaoning Lu College of Materials Science and Engineering Nanjing Forestry UniversityNanjing210037China College of Civil Engineering Yangzhou Polytechnic InstituteYangzhou225127China

chinese fir was compressed by vacuum hot pressing and conventional hot pressing at different temperatures(180℃,200℃ and 220℃),*** color parameters of the heat-compressed sample were measured,the relative mechanical properties of the material were tested and changes in the chemistry of fir were investigated using Fourier transform infrared spectroscopy(FTIR)and Xray photoelectron spectroscopy(XPS).The results indicated that the color difference between compressed and untreated wood increased gradually with the increase of *** with the conventional hot pressing treatment,the color difference(ΔE*)of the chinese fir treated by vacuum hot pressing decreased by 43.73%,69.91%,and 77.17%,*** mechanical properties(bending elastic modulus and bending strength)of chinese fir treated by vacuum hot pressing were significantly *** 24-hour water absorption thickness expansion rate of fir treated by vacuum hot pressing is smaller than that of conventional hot *** is implied that vacuum hot pressing treatment is an effective method to produce compressed wood,which can improve the mechanical properties and dimensional stability of wood,and reduce the influence of carbonization on wood color.

关键词： chinese fir vacuum hot pressing color mechanical properties dimensional stability

Site index for chinese fir plantations varies with climatic and soil factors in southern China

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Journal of Forestry Research 2022年第6期33卷 1765-1780页

作者： Xiaoyan Li Aiguo Duan Jianguo Zhang State Key Laboratory of Tree Genetics and Breeding Key Laboratory of Tree Breeding and Cultivation of National Forestry and Grassland AdministrationResearch Institute of ForestryChinese Academy of ForestryBeijing 100091People’s Republic of China Collaborative Innovation Center of Sustainable Forestry in Southern China Nanjing Forestry UniversityNanjing 210037People’s Republic of China

chinese fir[Cunninghamia lanceolata(Lamb.)Hook.]has a large native distribution range in southern ***,we tested differences in productivity of chinese fir plantations in different climatic regions and screened the main environmental factors affecting site productivity in each *** of a chinese fir site index with climatic factors and the soil physiochemical properties of five soil layers were examined in a long-term positioning observation trial comprising a total of 45 permanent plots in Fujian(eastern region in the middle subtropics),Guangxi(south subtropics)and Sichuan(central region in the middle subtropics)in southern *** mixed effects models were developed to predict the site index for chinese fir,which was found to vary significantly among different climatic *** P,total N,bulk density and total K were dominant predictors of site index in three climatic *** regional linear mixed models built using these predictors in the three climatic regions fit well(R~2=0.86–0.97).For the whole study area,the available P in the 0–20-cm soil layer and total N in the 80–100-cm soil layer were the most indicative soil *** was the most important climatic variable influencing the site *** model evaluation results showed that the fitting performance and prediction accuracy of the global site index model using the climatic region as the dummy variable and random parameters and the most important soil factors of the three climatic regions as predictors was higher than that of global site index model using the climatic variable and the most indicative soil variables of the whole study *** results will help with further evaluation of site quality of chinese fir plantations and the selection of its appropriate sites in southern China as the climatic changes.

关键词： Site productivity Site index Climate Soil chinese fir

Soil carbon budget in different-aged chinese fir plantations in south China

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Journal of Forestry Research 2014年第3期25卷 621-626页

作者： Shebao Yu Dan Wang Wei Dai Ping Li College of Forestry Beijing Forestry University Jiangxi Agricultural University Key Laboratory of Forest Ecological Environment Research Institute of Forest Ecology Environment and Protection Chinese Academy of Forestry State Forestry Administration Beijing Soil and Fertilizer Extension Service Station

Understanding the age effect on soil carbon balance in forest ecosystems is important for other material cycles and forest man-agement. In this research we investigated soil organic carbon density, litter production, litter decomposition rate, soil respiration, and soil mi-crobial properties in a chronosequence of four chinese fir plantations of 7, 16, 23 and 29 years at Dagangshan mountain range, Jiangxi Province, south China. There was a significant increasing trend in litter production with increasing plantation age. Litter decomposition rate and soil respira-tion, however, declined from the 7-year to the 16-year plantation, and then increased after 16 years. This was largely dependent on soil micro-organisms. Soil carbon output was higher than carbon input before 16 years, and total soil carbon stock declined from 35.98 t＆#183;ha-1 in the 7-year plantation to 30.12 t＆#183;ha-1 in the 16-year plantation. Greater litter produc-tion could not explain the greater soil carbon stock, suggesting that forest growth impacted this microbial process that controlled rates of soil car-bon balance together with litter and soil respiration. The results highlight＆amp;nbsp;the importance of the development stage in assessing soil carbon budget and its significance to future management of chinese fir plantations.

关键词： chinese fir soil microbial properties litter production litter decomposition rate soil respiration soil carbon stock

Solar radiation effects on leaf nitrogen and phosphorus stoichiometry of chinese fir across subtropical China

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Forest Ecosystems 2021年第4期8卷 831-840页

作者： Ran Tong Yini Cao Zhihong Zhu Chenyang Lou Benzhi Zhou Tonggui Wu Qianjiangyuan Forest Ecosystem Research Station Research Institute of Subtropical ForestryChinese Academy of ForestryHangzhou 311400China East China Coastal Forest Ecosystem Long-term Research Station Research Institute of Subtropical ForestryChinese Academy of ForestryHangzhou 311400China Guangdong Provincial Key Laboratory of Water Quality 313 Improvement and Ecological Restoration for Watersheds Institute of Environmental and Ecological EngineeringGuangdong 314 University of TechnologyGuangzhou 510006China Zhejiang A&F University Hangzhou 311300China

Background:Solar radiation(SR)plays critical roles in plant physiological processes and ecosystems ***,the exploration of SR influences on the biogeochemical cycles of forest ecosystems is still in a slow progress,and has important implications for the understanding of plant adaption strategy under future environmental ***,this research was aimed to explore the influences of SR on plant nutrient characteristics,and provided theoretical basis for introducing SR into the establishment of biochemical models of forest ecosystems in the future ***:We measured leaf nitrogen(N)and phosphorus(P)stoichiometry in 19 chinese fir plantations across subtropical China by a field *** direct and indirect effects of SR,including global radiation(Global R),direct radiation(Direct R)and diffuse radiation(Diffuse R)on the leaf N and P stoichiometry were ***:The linear regression analysis showed that leaf N concentration had no association with SR,while leaf P concentration and N:P ratio were negatively and positively related to SR,*** least squares path model(PLS-PM)demonstrated that SR(*** R and Diffuse R),as a latent variable,exhibited direct correlations with leaf N and P stoichiometry as well as the indirect correlation mediated by soil P *** direct associations(path coefficient=−0.518)were markedly greater than indirect associations(path coefficient=−0.087).The covariance-based structural equation modeling(CB-SEM)indicated that SR had direct effects on leaf P concentration(path coefficient=−0.481),and weak effects on leaf N *** high SR level elevated two temperature indexes(mean annual temperature,MAT;≥10°C annual accumulated temperature,≥10℃ AAT)and one hydrological index(mean annual evapotranspiration,MAE),but lowered the soil P ***,MAE and soil P content could affect the leaf P concentration,which cause the indirect effect of SR on leaf P concentration(pa

关键词： Solar radiation Leaf Soil Nitrogen and phosphorus Stoichiometry chinese fir

Effects of phenolic acids on soil nitrogen mineralization over successive rotations in chinese fir plantations

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Journal of Forestry Research 2020年第1期31卷 303-311页

作者： Long-Chi Chen Xin Guan Qing-Kui Wang Qing-Peng Yang Wei-Dong Zhang Si-Long Wang Huitong Experimental Station of Forest Ecology Institute of Applied EcologyChinese Academy of SciencesShenyang 110016People’s Republic of China Hunan Key Laboratory for Structure and Ecosystem Service of Subtropical Forest Huitong National Research Station of Forest EcosystemHuitong 418307People’s Republic of China

Phenolic acids are secondary metabolites of plants that significantly affect nutrient cycling *** investigate such effects,the soil available nitrogen(N)content,phenolic acid content,and net N mineralization rate in three successive rotations of chinese fir plantations in subtropical China were *** N mineralization and nitrification rates in soils treated with phenolic acids were measured in an ex situ *** with first-rotation plantations(FCP),the contents of total soil nitrogen and nitrate in second(SCP)-and third-rotation plantations(TCP)decreased,and that of soil ammonium *** net N mineralization rates in the second-and third-rotation plantations also increased by 17.8%and 39.9%,*** contrast,soil net nitrification rates decreased by 18.0%and 25.0%,*** concentrations of total phenolic acids in the FCP soils(123.22±6.02 nmol g^-1)were 3.0%and 17.9%higher than in the SCP(119.68±11.69 nmol g^-1)and TCP(104.51±8.57 nmol g^-1,respectively).The total content of phenolic acids was significantly correlated with the rates of net soil N mineralization and net *** ex situ experiment showed that the net N mineralization rates in soils treated with high(HCPA,0.07 mg N kg^-1 day^-1)and low(LCPA,0.18 mg N kg^-1 day^-1)concentrations of phenolic acids significantly decreased by 78.6%and 42.6%,respectively,comparing with that in control(0.32 mg N kg^-1 day^-1).Soil net nitrification rates under HCPA and LCPA were significantly higher than that of the *** results suggested that low contents of phenolic acids in soil over successive rotations increased soil net N mineralization rates and decreased net nitrification rates,leading to consequent reductions in the nitrate content and enhancement of the ammonium content,then resulting in enhancing the conservation of soil N of successive rotations in chinese fir plantation.

关键词： Secondary metabolics Nitrogen cycle chinese fir Vanillin Vanillic acid p-Hydroxybenzoic acid

Characterization of a collection of chinese fir elite genotypes using *** amplified polymorphism markers

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Journal of Forestry Research 2016年第5期27卷 1105-1110页

作者： Hongjing Duan Dehuo Hu Yun Li Huiquan Zheng National Engineering Laboratory for Tree Breeding Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants Ministry of Education College of Biological Sciences and Technology Beijing Forestry University Beijing 100083 People's Republic of China Guangdong Provincial Key Laboratory of Bio-control for the Forest Disease and Pest Guangdong Academy of ForestryGuangzhou 510520 People's Republic of China

chinese fir [Cunninghamia lanceolata （Lamb.） Hook] is a major timber tree species in China. In the pre- sent study, sequence-related amplified polymorphism （SRAP） markers were used to evaluate the polymorphisms, diversity, and relationships in a collection of chinese fir elite genotypes （n = 103） from the Lechang provenance, an endangered provenance. Thirty-five SRAP primer combinations produced 620 bands among the tested 103 Lechang provenance genotypes and 17 nonSLechang provenance genotypes; 577 （93.1%） of these were polymorphic, yielding an average of 16.5 polymorphic bands per primer combination. Of the SRAP primer combinations （n = 35）, I4 ones identified 〉70.0 % of the 120 genotypes. The Mel2-Eml9 combination had the strongest discriminatory ability with 93.3 % of the genotypes iden- tified. An UPGMA dendrogram further showed that most of the Lechang provenance genotypes （87.4 %） grouped together （Cluster A）. The Lechang genotypes had a con- siderable amount of genetic variation with genetic simi- larity from 0.40 to 0.81. The current work may facilitate the management of the endangered Lechang chinese fir provenance.

关键词： chinese fir SRAP Germplasm Geneticvariation - Dendrogram

Effect of heat-disturbance on microbial biomass carbon and microbial respiration in chinese fir(Cunninghamia lanceolata) forest soils

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Journal of Forestry Research 2015年第4期26卷 933-939页

作者： Jianfen Guo Guangshui Chen Jinsheng Xie Zhijie Yang Yusheng Yang Key Laboratory for Subtropical Mountain Ecology School of Geographical ScienceFujian Normal University Institute of Geography Science Fujian Normal University

Prescribed fire has now become the usual management practice in the chinese fir （Cunninghamia lanceolata （Lamb.） Hook.） plantation in southern China. Heat generated during fire may affect carbon （C） dynam- ics in soils. We investigated the microbial biomass C （MBC） and microbial respiration in two chinese fir forest soils （one is not exposed to fire for the past 88 years, and the other is recently exposed to prescribed fire） after soil heating （100 and 200 ℃） under three moisture regimes [25, 50 and 75 % of water holding capacity （WHC）]. For both soils, significant reduction in MBC with increasing heating temperature was found. Soils without exposing to fire previously had significantly greater MBC concentra- tion than the fire-exposed soils when heated at 100 or 200 ℃. Lower soil water content resulted in higher MBC concentrations in both soils. In contrast, both soils had the highest soil microbial respiration rate at 50 % WHC. Soils without exposing to fire previously had the greatest microbial respiration rates at 200 ℃, while the fire-ex- posed soils when heated at 100 ℃ had greatest microbialrespiration rates. During 14-days post-heat incubation, soil MBC in both soils was greatest after heating at 200 ℃ and 25 % WHC. However, soil previously exposed to fire had the lowest CO2 evolution when incubated at 25 % WHC.

关键词： chinese fir fire Microbial biomass C Microbial respiration

Soil C and N Pools in chinese fir and Evergreen Broadleaf Forests and their Changes with Slash Burning in Mid-Subtropical China

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Pedosphere 2006年第1期16卷 56-63页

作者： GUO Jian-Fen YANG Yu-Sheng CHEN Guang-Shui XIE Jin-Sheng LIN Peng College of Life Science Xiamen University Xiamen 361005 （China） College of Geography Science Fujian Normal University Fuzhou 350007 （China） College of Forestry Fujian Agriculture and Forestry University Fuzhou 350002 （China）

Soil organic carbon （C） and total nitrogen （N） pools of a chinese fir （Cunninghamia lanceolata （Lamb.） Hook.）（CF） forest, and an evergreen broadleaf （EB） forest located in mid-subtropical, southeastern China, were compared before clearcutting, with the effect of slash burning on organic C and total N in the top 10 cm of soil before and after burning also being evaluated. Prior to clearcutting CF forest had significantly lower （P 〈0.05） organic C and total N in the soil （0-100 cm） compared to EB forest with approximately 60% of the C and N at the two forest sites stored at the 0 to 40 cm soil. In post-burn samples of the 0-10 cm depth at 5 days, 1 year, and 5 years for CF and EB forests, significantly lower levels （P 〈0.05） of organic C and total N than those in the pre-burn samples were observed. Compared to the pre-burn levels, at post-burn year 5, surface soil organic C storage was only 85% in CF forest and 72% in EB forest, while total N storage was 77% for CF forest and 73% for EB forest. Slash burning caused marked long-term changes in surface soil C and N in the two forest types.

关键词： chinese fir evergreen broadleaf forest slash burning soil carbon soil nitrogen

Influence of thinning on acidic deposition in chinese fir plantations

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Journal of Central South University 2014年第2期21卷 694-700页

作者：柳思勉田大伦项文化闫文德刘云国胡新将 College of Environmental Science and Engineering Hunan University Key Laboratory of Environmental Biology and Pollution Control of Ministry of Education (Hunan University) Faculty of Life Science and Technology Central South University of Forestry and Technology Section of Ecology Research Central South University of Forestry and Technology

Acidic deposition,which is mainly caused by atmospheric pollution,is one of the global environmental *** is an effective management to improve the tree productivity,reduce the wildfire risk and maintain a healthy *** thinning may reduce the effect of acidic deposition,the effect of thinning on acidic deposition was *** biomass,soil properties,pH value of runoff and groundwater in both unthinned and thinned chinese fir plantations were measured and compared over a 5-year period(2-6 years after thinning).The results indicated that acidic deposition in the Huitong State Ecosystem Research Station was serious,and it got worse with *** thinning resulted in a huge change in biomass and soil *** the 5-year monitoring period,biomasses of understory and litter,plant species richness,coverage of undergrowth plant layer were significantly higher in thinned site than in unthinned ***,higher soil fertility as well as lower amounts of runoff and groundwater were found in thinned *** was suggested that thinning could improve the structure of forest,leading to restoring the effluent(runoff and groundwater) pH to the normal value.

关键词： thinning acidic deposition chinese fir biomass soil properties