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

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

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Soil microbial activity and nutrients of evergreen broad-leaf forests in mid-subtropical region of China

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Journal of forestry research 2015年第3期26卷 673-678页

作者： Zhangquan Zeng Silong Wang Canming Zhang Hong Tang Xiquan Li Zijian Wu Jia Luo Hunan Academy of forestry Hengshan Station of Forest Ecology Huitong Experimental station of forest Ecology State Key Laboratory of Forest and Soil Ecology Institute of Applied Ecology Chinese Academy of Sciences Huitong National research station of forest ecosystem College of Environment and Life Science Kaili University

To better understand the effects of forest suc- cession on soil microbial activity, a comparison of soil microbial properties and nutrients was conducted between three forest types representing a natural forest succession chronosequence. The study compared a pine （Pinus mas- soniana） forest （PF）, a pine and broadleaf mixed forest （MF） and an evergreen broadleaf forest （BF）, in the Yingzuijie Biosphere Reserve, Hunan Province, China. Results showed that soil nutrients in the MF and BF plots were higher than in the PF plots. The range in microbial biomass carbon followed a similar pattem with Be havingthe greatest values, 522-1022 mg kg-1, followed by Mr 368-569 mg kg-1, and finally, PF 193--449 mg kg-1. Soil nutrients were more strongly correlated with microbial biomass carbon than basal respiration or metabolic quo- tient. Overall, forest succession in the study site improved soil microbial properties and soil fertility, which in turn can increase primary productivity and carbon sequestration.

关键词： Keywords qCO2 Soil microbial biomass C Soil nutrient

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Nurse plant theory and its application in ecological restoration in lower subtropics of China

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Progress in Natural Science:Materials International 2008年第2期18卷 137-142页

作者： Hai Ren,Long Yang,Nan Liu Heshan National Field research station of forest ecosystem,South China Botanical Garden,Chinese Academy of Sciences,Guangzhou 510650,China Heshan National Field research station of forest ecosystem South China Botanical Garden Chinese Academy of Sciences Guangzhou 510650 China

Nurse plants are those that facilitate the growth and development of other plant species (target species) beneath their canopy because they offer benign microhabitats that are more favorable for seed germination and/or seedling recruitment than their surrounding envi-ronment. Nurse plants have been mainly used to restore vegetation in arid and sub-arid zones in recent years. Based on summarizing the definition of nurse plant and target plant,we review the nursing effect mechanisms,ecological factors that influence nursing effect,rela-tionships between nurse plant and ecological restoration. This review also brings forward possible pairs of nurse and target species at lower subtropical areas. Furthermore,we provide the potential tendency in nurse plant research and application.

关键词： Nurse plant Target species forest restoration Nursing effect

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In-situ warming does not change soil priming effect induced by glucose addition in a temperate forest

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Pedosphere 2024年第4期34卷 759-769页

作者： Xiaohan DONG Yunting FANG Dongwei LIU Xin GUAN Kai HUANG Yuqi LIU Qingkui WANG Silong WANG Weidong ZHANG Huitong Experimental station of forest Ecology CAS Key Laboratory of Forest Ecology and ManagementInstitute of Applied EcologyShenyang 110016China University of Chinese Academy of Sciences Beijing 101408China Hunan Key Laboratory for Structure and ecosystem Service of Subtropical forest Huitong National Research Station of Forest EcosystemHuitong 418307China Qingyuan forest Chinese ecosystem research Network(CERN) National Observation and Research StationShenyang 110016China Key Laboratory of forest Ecology and Management Institute of Applied EcologyChinese Academy of SciencesShenyang 110016(China)f Key Laboratory of Stable Isotope Techniques and ApplicationsShenyang 110016China Key Laboratory of Terrestrial ecosystem Carbon Neutrality Shenyang 110016China

Priming effect(PE)on soil organic carbon(SOC)decomposition caused by the addition of organic carbon(C)is an important ecological process in regulating soil C ***,most priming studies are confined to laboratory trials,while the assessment of soil PE under field conditions with variable weather conditions is *** study assessed the direct effects of glucose addition and in-situ warming on the extent of PE under field conditions in a temperate *** evaluated soil PE using 13C-glucose labelling,a simple and novel technique,based on the Keeling plot *** addition significantly enhanced native SOC decomposition and induced strong ***,the effect of in-situ warming on the extent of PE was not *** study confirms the importance of PE in regulating SOC turnover under field conditions.

关键词： lue lblling tchnquegbal wamingrmingt hppidfaty ai solganmattermineralisatn oezme respiration

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Carbon storage in evergreen broad-leaf forests in mid-subtropical region of China at four succession stages

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Journal of forestry research 2013年第4期24卷 677-682页

作者： ZENG Zhangquan WANG Silong ZHANG Canming GONG Chao HU Qing Huitong Experimental station of forest Ecology State Key Laboratory of Forest and Soil EcologyInstitute of Applied EcologyChinese Academy of Sciences Huitong National research station of forest ecosystem Graduate School of Chinese Academy of Sci- ences Hunan Academy of forestry Hengshan Station of Forest Ecology Northeast Institute of Geography and Agroecology Chinese Academy of Sciences

To better understand the effect of forest succession on carbon sequestration, we investigated carbon stock and allocation of evergreen broadleaf forest, a major zonal forest in subtropical China. We sought to quantify the carbon sequestration potential. We sampled four forest types, shrub （SR）, pine （Pinus massoniana） forest （PF）, pin~ and broadleaf mixed forest （Mr） and evergreen broadleaf forest （BF）. A regression equation was constructed using tree height and diameter at breast height （DBH） and elements of total tree biomass. The equation was subse- quently utilized to estimate tree carbon storage. The carbon storage of understory, litter, and soil was also estimated.

关键词： Biomass carbon Carbon allocation Carbon sequestration Soil organic carbon China subtropical forest

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ANALYSIS OF CLIMATE VARIABILITY IN THE JINSHA RIVER VALLEY

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Journal of Tropical Meteorology 2016年第2期22卷 243-251页

作者：何云玲张一平吴志杰 School of Resources & Environment and Earth Science Yunnan University Key Laboratory of Tropical forest Ecology Xishuangbanna Tropical Botanical GardenChinese Academy of Sciences Ailaoshan station for Subtropical forest ecosystem Studies Chinese Ecosystem Research Network

Monthly mean surface air temperatures and precipitation at 20 meteorological stations in the Jinsha River Valley(JRV) of southwest China were analyzed for temporal-spatial variation patterns during the period *** magnitude of a trend was estimated using Sen's Nonparametric Estimator of Slope *** statistical significance of a trend was assessed by the MK *** results showed that mean annual air temperature has been increasing by 0.08℃/decade during the past 50 years as a *** climate change trend in air temperature was more significant in the winter(0.13℃/decade) than in the summer(0.03℃/decade).Annual precipitation tended to increase slightly thereafter and the increasing was mainly during the crop-growing *** the greatest variation of the annual mean temperature and annual precipitation were observed at the dry-hot valley area of middle *** warming rates were found in the upper reaches whereas the dry-hot basins of middle reaches experienced a cooling trend during the past *** of the overall increasing in precipitation,more obvious upward-trends were found in the dry-hot basins of middle reaches whereas the upper reaches had a drought trend during the past decades.

关键词： temperature precipitation trend analysis climate change Jinsha River Valley

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Rhizosphere bacterial communities and soil nutrient conditions reveal sexual dimorphism of Populus deltoides

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Journal of forestry research 2023年第3期34卷 761-771页

作者： Qiliang Zhu Kun Yan Yufeng Dong Yanping Wang Taishan forest ecosystem research station of State forestry Administration College of ForestryShandong Agricultural UniversityTai’an 271018People’s Republic of China Shandong Academy of forest Jinan 250014People’s Republic of China

Sexual dimorphism of plants shapes the diff erent morphology and physiology between males and ***,it is still unclear whether it infl uences belowground ecological *** this study,rhizosphere soil of male and female Populus deltoides and bulk soil were collected from an 18-year plantation(male and female trees mix-planted)and grouped into three soil *** carbon(C),nitrogen(N)and phosphorus(P)levels were determined,and soil bacterial communities were analyzed by high-throughput *** results showed the less total carbon and total organic carbon,the more nutrients(available phosphorus,nitrate nitrogen and ammonium nitrogen)available in the rhizosphere soils of female poplars than soils of ***,α-diversity indices of the rhizosphere bacterial communities under male plants were signifi-cantly *** component analysis showed that the bacterial communities were signifi cantly diff erent between the male and female soil ***,the bacterial co-occurrence network in soil under male trees had more nodes and edges than under *** analysis showed the more functional bacteria taxa related to biofi lm formation and antioxidation under *** results indicate that soils under male poplars had more diverse and more complex co-occurrence networks of the rhizosphere bacterial community than soils under female trees,implying that male poplars might have better environmental *** study provides insight into the diff erent soil-microbe interactions of dioecious *** details about the infl uencing mechanism of sexual dimorphism on rhizosphere soil bacterial communities need to be further studied.

关键词： Dioecious poplar Rhizosphere bacterial community High-throughput sequencing Bacterial function prediction

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SEASONAL RHYTHM OF ABOVEGROUND BIOMASS——THE CALAMAGROSTIS ANGUSTIFOLIAGRASSLAND IN SANJIANG PLAIN

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Journal of Northeast forestry University 1992年第1期3卷 29-36页

作者： Ma KepingBeijing forest ecosystem Location research station, Acadcmia SinicaZhang Yue Zhou RuichangNatural Resources Institute of Heilongjiang Province Academia Sinica Beijing Forest Ecosystem Location Research Station China Natural Resources Institute of Heilongjiang Province China

In this paper, the seasonal rhythms of the above grassland biomass of the two main types of the Calamagrostis angustifolia grasslands, the Calamagrostis angustifolia meadow and the Calamagrostis angustifolia + Carex schmidilu swamp meadow, were reported. The simulation technique was employed to described the dynamic process. In the end, the absolute growth rate and the relative growth rate of abovcground biomass of the two communities were approached in the light of the growth analysis method.

关键词： Calamagrostis anguslifolia meadow Calamagrostis anguslifolia + Carex schmidilii swamp meadow Aboveground biomass Simulation Growth analysis

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Selective logging enhances ecosystem multifunctionality via increase of functional diversity in a Pinus yunnanensis forest in Southwest China

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forest ecosystems 2020年第4期7卷 733-745页

作者： Xiaobo Huang Shuaifeng Li Jianrong Su research Institute of Resources Insects Chinese Academy of ForestryKunming 650224China Pu’er forest ecosystem research station National Forestry and Grassland AdministrationKunming 650224China

Background:The impacts of selective logging on ecosystem multifunctionality(EMF)remain largely *** this study,we analyzed the response of nine variables related to four ecosystem functions(*** cycling,soil carbon stocks,decomposition,and wood production)to five selective logging intensities in a Pinus yunnanensisdominated *** included a control group with no harvest to evaluate the potential shifts in EMF of the *** *** also assessed the relationship between above-and belowground biodiversity and EMF under these different selective logging ***,we evaluated the effects of biotic and abiotic factors on EMF using a structural equation modeling(SEM)***:Individual ecosystem functions(EFs)all had a significant positive correlation with selective logging *** EFs showed different patterns with the increase of selective logging *** found that EMF tended to increase with logging intensity,and that EMF significantly improved when the stand was harvested at least *** functional diversity and soil moisture had a significant positive correlation with EMF,but soil fungal operational taxonomic units(OTUs)had a significant negative correlation with *** on SEM,we found that selective logging improved EMF mainly by increasing functional ***:Our study demonstrates that selective logging is a good management technique from an EMF perspective,and thus provide us with potential guidelines to improve forest management in *** forests in this *** functional diversity is maximized through reasonable selective logging measures,so as to enhance EMF.

关键词： Biodiversity ecosystem multifunctionality Functional traits Pinus yunnanensis Soil enzymatic activity Structural equation modeling

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Gully internal erosion triggered by a prolonged heavy rainfall event in the tableland region of China's Loess Plateau

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International Soil and Water Conservation research 2023年第4期11卷 610-621页

作者： Jiaxi Wang Yan Zhang Kunheng Li Ziqing Zhang Chang Chen College of Soil and Water Conservation Beijing forestry University Beijing 100083China forest ecosystem Studies National Observation and Research StationJixianShanxi 042200China

Gully erosion is a severe form of soil erosion,but gully internal erosion processes are poorly understood,especially at the event *** investigate gully internal erosion intensity and understand the related gully development mechanism in an agricultural environment with gully head stabilization and vege-tation restoration efforts,two successive field investigations were carried out just before and after a prolonged rainfall event in 2021 in the tableland region of China's Loess *** gullies were investigated and all experienced gully internal erosion,while most gully boundaries were stable during the heavy rainfall event based on the comparison of the UAV digital orthograph maps(DOMs acquired with Unmanned Aerial Vehicle)before and after the rainfall *** proportion of gully internal erosion area to gully internal area of the 13 investigated gullies ranged from 3 to 55%,with average areal erosion proportion of the gully sidewall and gully bed of 21%and 36%,*** erosion area of subdrainage units(SDUs)on the gully sidewall was positively correlated to the SDU area,average SDU slope gradient and vegetation type,while the erosion area on the gully bed was positively correlated to the gully area,gully depth and gully bed slope *** internal erosion was not significantly correlated with gully drainage area because the connectivity between the upslope and gully areas was interrupted and the effective drainage area of the gully was obviously reduced by soil erosion conser-vation measures,including terraces on the upslope drainage area,shrub belts,and water ***,gully internal erosion is still active under the heavy rainfall storm against the background of the'Grain for Green'and'Gully Stabilization and Tableland Protection'programs,and integrated measures for preventing both gully expansion and gully internal erosion must be further enhanced in the context of climate change.

关键词： Gully erosion Mass movement Heavy storm Loess Soil andwater conservation measures

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