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| 1 | Phosphorus limitation on photosynthesis of two dominant understory species in a lowland tropical forest显示文摘Aims Elevated nitrogen(N)deposition in tropical regions may accelerate ecosystem phosphorus(P)limitation.However,it is not explicitly addressed that how changes in soil N and P availability affect foliar nutrients and photosynthesis of plants in tropical forests.In this study,we examined the effects of N and P additions on foliar nutrients and net photosynthesis of two dominant understory species,Randia can-thioides(R.canthioides)and Cryptocarya concinna(C.concinna)in an N-saturated old-growth tropical forest(>400-year-old)in south-ern China.Methods A full factorial NP addition experiment(2×2)was established in 2007 and continued through August 2010.Four treatments,including control,N addition(150 kg N ha^(−1) year^(−1)),P addi-tion(150 kg P ha^(−1) year^(−1))and NP addition(150 kg N ha^(−1) year^(−1) plus 150 kg P ha^(−1) year^(−1))were set up in this experiment.Photosynthetic traits maximum photosynthetic CO_(2) assimilation(Amax),stomatal conductance(gs),leaf transpiration(E),light satu-rating point,concentrations of chlorophyll a/b and foliar nutri-ents(N and P)of the two species were measured with standard methods.Important Findings Three years of N addition had no significant effects on any measured photosynthetic parameter of either species.However,N addition significantly elevated foliar N and P concentrations of one species(R.canthioides),resulting in lower photosynthetic nitrogen use effi-ciency(PNUE).N treatments decreased foliar P concentration of the other(C.concinna),resulting in increased photosynthetic phos-phorus use efficiency,which was potentially related to N-induced P shortage.In contrast,positive effects of P treatments on gs of R.can-thioides,Amax and chlorophyll a+b of C.concinna were observed.P treatments also elevated foliar P and PNUE of both species,imply-ing P induced more efficient use of N.Our results suggested a more important role of P than N on influencing photosynthetic traits of these two understory species.Alleviation of P shortage through P addition may enhance photosynthetic performances of some under-story species in N-rich tropical forests. | Feifei Zhu Xiankai Lu Jiangming Mo | 2014 | Journal of Plant Ecology2014，7，6： | 10 |
| 2 | Nitrogen deposition and its ecological impact in China: An overview显示文摘 | Xuejun Liu Lei Duan Jiangming Mo Enzai Du Jianlin Shen Xiankai Lu Ying Zhang Xiaobing Zhou Chune He Fusuo Zhang | 2010 | Environmental Pollution2010，，10： | 4 |
| 3 | The responses of carbon-and nitrogen-acquiring enzymes to nitrogen and phosphorus additions in two plantations in southern China显示文摘In tropical plantations,nutrients such as nitrogen(N)or phosphorus(P)are often applied as management practices.However,the effects of such nutrient additions on topsoil C-and N-acquiring enzymes activities are unclear.In this study,the impacts of fertilization onβ-1,4-glucosidase(BG),β-D-cellobiosidase(CBH),β-1,4-xylosidase(BX),β-1,4-N-acetyl-glucosaminidase(NAG),and leucine amino peptidase(LAP)enzymes activities from topsoil and litter layer of two tropical plantations(Acacia auriculiformis and Eucalyptus urophylla)were measured.The results showed that N addition had neutral impact on topsoil enzymes,while significantly elevating the activities of BG,CBH,BX,and NAG in the litter layer.P fertilization had no impacts except for an elevation of NAG in litter sample.There was no interactions found between N and P additions on these enzyme activities.The clearer impacts of N over P fertilization were unexpected because that the study site receives a high rate of atmospheric N deposition,and has low soil P availability.The impact of P fertilization on hydrolytic enzyme activities may be less important compared with that of N. | Senhao Wang Taiki Mori Jiangming Mo Wei Zhang | 2020 | Journal of Forestry Research2020，31，4： | 2 |
| 4 | Nutrient dynamics of a hu- man-impacted pine forest in a MAB reserve of subtropical China 显示文摘 | Mo Jiangming Brown S Lenart M | 1995 | Biotropica1995，27，3： | 1 |
| 5 | Emissions of nitrous oxide from three tropical forests in Southern China in response to simulated nitrogen deposition显示文摘 | Wei Zhang Jiangming Mo Guirui Yu Yunting Fang Dejun Li Xiankai Lu Hui Wang | 2008 | Plant and Soil (-)2008，，1： | 1 |
| 6 | Correlation between leaflitter and fine root decomposition among subtropical tree species显示文摘 | Hui Wang Shirong Liu Jiangming Mo | 2010 | Plant and Soil2010，335，： | 1 |
| 7 | Response of Litter Decomposition to Simulated N Deposition in Disturbed, Rehabilitated and Mature Forests in Subtropical China显示文摘 | Jiangming Mo Sandra Brown Jinghua Xue Yunting Fang Zhian Li | 2006 | Plant and Soil (-)2006，，1： | 1 |
| 8 | Nitrogen addition reduces soil respiration in a mature tropical forest in southern China显示文摘 | Mo Jiangming Zhang Wei Zhu Wenxing | 2008 | Global Change Biology2008，14，： | 1 |
| 9 | Nitrogen addition reduces soil respiration in a mature tropical forest in southern China 显示文摘 | Mo Jiangming Zhang Wei Zhu Weixing | 2008 | Global Change Biology2008，14，： | 1 |
| 10 | Effects of experimental nitrogen additions on plant diversity in an old-growth tropical forest显示文摘 | Lu Xiankai Mo Jiangming Gilliam F S | 2010 | Global Change Biology2010，16，10： | 1 |
| 11 | Effects of experimental nitrogen additions on plant diversity in tropical forests of contrasting disturbance regimes in Southern China显示文摘 | Lu Xiankai Mo Jiangming Gilliam F S | 2011 | Environmental Pollution2011，159，10： | 1 |
| 12 | Nitrogen addition reduces soil respiration in a mature tropical forest in southern China显示文摘 | MO Jiangming ZHANG Wei ZHU Weixing | 2008 | Global Change Biology2008，14，2： | 1 |
| 13 | Effects of experimental nitrogen additions on plant diversity in an old-growth tropical forest显示文摘 | LU Xiankai MO Jiangming GILL1AM F S | 2010 | Global Change Biology2010，16，10： | 1 |
| 14 | Nitrogen addition reduces soil respiration in a mature tropical forest in southern China显示文摘 | Mo Jiangming Zhangwei Zhuweining | 2008 | Global Change Biology2008，14，2： | 1 |
| 15 | Soil organic carbon stock and chemical composition in four plantations of indigenous tree species in subtropical Chlna显示文摘 | WANG Hui LIU Shirong MO Jiangming | 2010 | Ecological Research2010，25，6： | 1 |
| 16 | Nitrogen deposition and its ecological impact in China:an overview 显示文摘 | LIU Xuejun DUAN Lei MO Jiangming | 2011 | Environmental Pollution2011，159，10： | 1 |
| 17 | Nitrogen availability in distured, rehabilitated and mature forests of tropical China 显示文摘 | MO Jiangming BROWN SANDRA PENG Shaolin | 2003 | Forest Ecology and Management2003，175，： | 1 |
| 18 | 长期磷添加对热带森林土壤磷酸单酯酶与磷酸二酯酶活性比值的影响显示文摘热带森林土壤微生物可以通过改变不同类型的磷酸酶活性来适应低磷的环境。以往的研究认为,低磷环境中土壤微生物更倾向于分解有机磷单酯键而非二酯键。因此,磷酸单酯酶(PME)的活性变化对生态系统磷输入的响应可能更敏感,其与磷酸二酯酶(PDE)活性的比值在磷输入后将显著降低。为了检验土壤微生物在低磷的热带森林中对不同磷酸酶的“投资”策略,我们在鼎湖山3种热带森林进行了长达10年的磷添加实验。与以往的研究不同,本研究发现长期磷添加没有改变原生林与次生林的PME:PDE比值,但显著提高了人工林土壤PME:PDE比值。结果表明,长期磷添加可能减少了凋落物或穿透雨来源的PDE,从而使其土壤PDE活性下降较PME降低更快,因而PME:PDE比值未能降低。 | Taiki Mori Senhao Wang Cong Wang Ji Chen Cheng Peng Mianhai Zheng Juan Huang Faming Wang Zhanfeng Liu Jiangming Mo Wei Zhang | 2023 | Journal of Plant Ecology2023，16，3： | 0 |
| 19 | Testing potassium limitation on soil microbial activity in a sub-tropical forest显示文摘Because potassium(K)is a rock-derived essential element that can be depleted in highly-weathered tropical soils,K availability may limit some portion of soil microbial activity in tropical forest ecosystems.In this paper we tested if K limits microbial activity in the condition of sufficient labile C supply.An incubation experiment was performed using surface soil samples(0–10 cm depth)obtained from four permanent ecological research plots in a natural sub-tropical forest in southern China.Soil samples were taken in September 2016.Heterotrophic soil respiration rates and microbial biomass were measured after the addition of glucose(both D and L)with and without K(potassium chloride).We did not observe any effects of K addition on soil microbial respiration,suggesting that K does not limit the microbial activity in the condition of sufficient labile C supply.The lack of microbial response to added K can be attributed to the high mobility of K in forest ecosystems,which may have provided sufficient K to microbes in our soil samples(already provided at the beginning of the incubation).However,at the present stage,we cannot conclude that K is not a limiting factor of soil microbial activity in other tropical forest ecosystems because of the heterogeneity of tropical forest ecosystems and few observations.The hypothesis needs to be tested in larger numbers of tropical forests. | Taiki Mori Senhao Wang Zhuohang Wang Cong Wang Hui Mo Jiangming Mo Xiankai Lu | 2019 | Journal of Forestry Research2019，30，6： | 0 |
| 20 | Effect of nitrogen addition on DOC leaching and chemical exchanges on canopy leaves in Guangdong Province, China显示文摘The impact of nitrogen(N)deposition on dissolved organic carbon(DOC)fractions in throughfall is not well understood.We performed a laboratory experiment and compared DOC leaching from canopy leaves after dipping leaves in pure water(control)and NH4NO3 solution(N-treatment)for 18 h.Net changes of DOC,NH4^+,NO3^-,SO4^2-,K^+,Mg^2+,Ca^2+and H^+contents after dipping leaves were determined by comparing solutions with and without leaves.We recorded no differences of DOC leaching between control and N-treatment,implying that N deposition had minor impacts on canopy DOC production.This confirmed that previous experiments testing the effects of N addition on DOC dynamics without considering the effects of the canopy reaction successfully described the real situation.We also confirmed the previously-reported canopy exchange process in spite of a high background N deposition at our study site.N-treatment significantly increased base cation leaching,especially K^+,and the increase was positively correlated with foliar NH4?retention.Net leaching of H^+and SO4^2-was not affected by the N-treatment. | Taiki Mori Kaijun Zhou Senhao Wang Wei Zhang Jiangming Mo | 2019 | Journal of Forestry Research2019，30，5： | 0 |
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