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Belowground carbon balance and carbon accumulation rate in the successional series of monsoon evergreen broad-leaved forest

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Science China Earth Sciences 2006年第3期49卷 311-321页

作者： ZHOU Guoyi1, ZHOU Cunyu1, LIU Shuguang2, TANG Xuli1, OUYANG Xuejun1, ZHANG Deqiang1, LIU Shizhong1, LIU Juxiu1, YAN Junhua1, ZHOU Chuanyan1, LUO Yan1, GUAN Lili1 & LIU Yan1 1. dinghushan forest ecosystem research station, Chinese Academy of Sciences, Guangzhou 510650, China 2. SAIC, EROS Data Center, U.S. Geological Survey, Sioux Falls, SD 57198, USA dinghushan forest ecosystem research station Chinese Academy of Sciences Guangzhou China SAIC EROS Data Center U.S. Geological Survey Sioux Falls USA

The balance, accumulation rate and temporal dynamics of belowground carbon in the successional series of monsoon evergreen broadleaved forest are obtained in this paper, based on long-term observations to the soil organic matter, input and standing biomass of litter and coarse woody debris, and dissolved organic carbon carried in the hydrological process of subtropical climax forest ecosystem—monsoon evergreen broad-leaved forest, and its two successional forests of natural restoration—coniferous and broad-leaved mixed forest and Pinus massoniana forest, as well as data of root biomass obtained once every five years and respiration measurement of soil, litter and coarse woody debris respiration for 1 year. The major results include: the belowground carbon pools of monsoon evergreen broad-leaved forest, coniferous and broad-leaved mixed forest, and Pinus massoniana forest are 23191 ± 2538 g·m?2, 16889 ± 1936 g·m?2 and 12680 ± 1854 g·m?2, respec- tively, in 2002. Mean annual carbon accumulation rates of the three forest types during the 24a from 1978 to 2002 are 383 ± 97 g·m?2·a?1, 193 ± 85 g·m?2·a?1 and 213 ± 86 g·m?2·a?1, respectively. The belowground carbon pools in the three forest types keep increasing during the observation period, suggesting that belowground carbon pools are carbon sinks to the atmosphere. There are seasonal variations, namely, they are strong carbon sources from April to June, weak carbon sources from July to September; while they are strong carbon sinks from October to November, weak carbon sinks from December to March.

关键词： monsoon evergreen broad-leaved forest, successional series of restoration, belowground, carbon pool, accumulation rate.

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Response of Nitrogen Leaching to Nitrogen Deposition in Disturbed and Mature forests of Southern China

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Pedosphere 2009年第1期19卷 111-120页

作者： FANG Yun-Ting M. YOH MO Jiang-Ming P. GUNDERSEN ZHOU Guo-Yi dinghushan forest ecosystem research station South China Botanical Garden the Chinese Academy of Sciences Zhaoqing Guangdong 520670 （China） Tokyo University of Agriculture and Technology Tokyo 183-8509 （Japan） forest ＆ Landscape Denmark Faculty of Life Sciences University of Copenhagen Hoersholm Kongevej 112970 （Denmark）

Current nitrogen (N) leaching losses and their responses to monthly N additions were investigated under a disturbed pine (Pinus massoniana) forest and a mature monsoon broadleaf forest in southern China. N leaching losses from both disturbed and mature forests were quite high (14.6 and 29.2 kg N ha-1 year-1, respectively), accounting for 57% and 80% of their corresponding atmospheric N inputs. N leaching losses were substantially increased following the first 1.5 years of N applications in both forests. The average increases induced by the addition of 50 and 100 kg N ha-1 year-1 were 36.5 and 24.9 kg N ha-1 year-1, respectively, in the mature forest, accounting for 73.0% and 24.9% of the annual amount of N added, and 14.2 and 16.8 kg N ha-1 year-1 in the disturbed forest, accounting for 28.4% and 16.8% of the added N. Great N leaching and a fast N leaching response to N additions in the mature forest might result from long-term N accumulation and high ambient N deposition load (greater than 30 kg N ha-1 year-1 over the past 15 years), whereas in the disturbed forest, it might result from the human disturbance and high ambient N deposition load. These results suggest that both disturbed and mature forests in the study region may be sensitive to increasing N deposition.

关键词： atmospheric N deposition N addition N leaching loss N saturation subtropical forests

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Dynamics of soil inorganic nitrogen and their responses to nitrogen additions in three subtropical forests, south China

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Journal of Environmental Sciences 2006年第4期18卷 752-759页

作者： FANG Yun-ting ZHU Wei-xing MO Jiang-ming ZHOU Guo-yi GUNDERSEN Per dinghushan forest ecosystem research station South China Botanical Garden Chinese Academy of Sciences Zhaoqing 526070 China Biological Sciences Binghamton University-SUNY Binghamton NY 13902-6000 USA forest and Landscape Denmark Hoersholm Kongevej 11 2970 Denmark The Graduate School of the Chinese Academy of Sciences Beijing 100039 China

Three forests with different historical land-use, forest age, and species assemblages in subtropical China were selected to evaluate current soil N status and investigate the responses of soil inorganic N dynamics to monthly ammonium nitrate additions. Results showed that the mature monsoon evergreen broadleaved forest that has been protected for more than 400 years exhibited an advanced soil N status than the pine （Pinus massoniana） and pine-broadleaf mixed forests, both originated from the 1930＇s clear-cut and pine plantation. Mature forests had greater extractable inorganic N pool, lower N retention capacity, higher inorganic N leaching, and higher soil C/N ratios. Mineral soil extractable NH4^＋-N and NO3-N concentrations were significantly increased by experimental N additions on several sampling dates, but repeated ANOVA showed that the effect was not significant over the whole year except NH4^＋-N in the mature forest. In contrast, inorganic N （both NH4^＋-N and NO3^--N） in soil 20-cm below the surface was significantly elevated by the N additions. From 42% to 74% of N added was retained by the upper 20 cm soils in the pine and mixed forests, while 0%-70% was retained in the mature forest. Our results suggest that land-use history, forest age and species composition were likely to be some of the important factors that determine differing forest N retention responses to elevated N deposition in the study region.

关键词： N deposition N saturation extractable inorganic N soil solution inorganic N subtropical China

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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

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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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