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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

Soil Biological Changes for a Natural Forest and Two Plantations in Subtropical China

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Pedosphere 2004年第3期14卷 297-304页

作者： chenguang-shui YANGYu-Sheng XIEJin-Sheng LILing GAORen CollegeofGeographyScience FujianNormalUniversityFuzhou350007（China） CollegeofForestry FujianAgricultureandForestryUniversityNanpin9353001（China）

Conversion of natural forests into pure plantation forests is a common management practice in subtropical *** evaluate the effects of forest conversion on soil fertility, microbe numbers and enzyme activities in topsoils (0-10 cm)were quantified in two 33-year-old monoculture plantations of Castanopsis kawakamii Hayata (CK) and Cunninghamia lanceolata Lamb. (Chinese fir) (CF), and compared to a neighboring relict natural C. kawakamii forest (NF), in Sanming,Fujian. Five soil samples were collected once each in January, April, July, September and November in 2000 in each forest for laboratory analysis. Over the sampling year, there were significant differences for bacteria, fungi and actinomycetes between forests and between seasons (P ＜ 0.05). The largest bacteria and fungi populations were in NF, while CF contained the greatest number of actinomycetes. There were also significant differences (P ＜ 0.05) with microbial respiration for forests and seasons. Additionally, compared with NF, urease and acid phosphatase were significantly lower (P ＜ 0.05)in CK and CF. Also, the correlations of soil hydrolysable N and available P to soil microbial and enzymatic activities were highly significant (P ＜ 0.01). Thus, to alter the traditional Chinese fir monoculture so as to mimic the natural forest conditions, managing mixed stands of Chinese fir and broadleaf trees or conducting crop rotation of conifers and broadleaf trees as well as minimizing forest disturbances like clear-cutting, slash burning and soil preparing, could be utilized.

关键词： chinese fir monoculture plantation natural forest soil enzymes soilmicrobes

Soil microbial biomass and its controls

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Journal of Forestry Research 2005年第4期16卷 327-330页

作者： ZHANG Jiang-shan GUO Jian-fen chen guang-shui QIAN Wei Research Institute of Environmental Science Fujian Normal University Fuzhou 350007 P. R. China Key Laboratory of Subtropical Resources and Environments of Fujian Province Fuzhou 350007 P. R. China

Microbial biomass represents a relatively small standing stock of nutrients, compared to soil organic matter, but it can act as a labile source of nutrients for plants, a pathway for incorporation of organic matter into the soil, and a temporary sink for nutrients. This review describes several factors controlling the dynamics of soil microbial biomass. These factors mainly include organic carbon and nitrogen limitation, residue and nutrient management, differences in plant species, soil texture, soil moisture and temperature. On the basis of detailed analysis, it is reasonable that future research would be focused on the impact of land use change on soil MB in tropical and subtropical ecosystems.

关键词： Microbial biomass Soil Influencing factors Organic carbon Organic nutrient Review

Concentrations and seasonal dynamics of dissolved organic carbon in forest floors of two plantations （Castanopsis kawakamii and Cunninghamia lanceolata） in subtropical China

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Journal of Forestry Research 2005年第3期16卷 205-208页

作者： ZHANG Jiang-shan GUO Jian-fen chen guang-shui QIAN Wei Research Institute of Environmental Science Fujian Normal University Fuzhou 350007 P. R. China Key Laboratory of Snbtropical Resources and Environments of Fujian Province Fuzhou 350007 P. R. China

The concentrations and seasonal dynamics of DOC in forest floors of monoculture plantations of Castanopsis kawakamii and Chinese fir （Cunninghamia lanceolata） were assessed in Sanming, Fujian, China （26°11′30″N, 117°26′00″E）. Forest floor samples were taken in January, April, July and October in 2002 and divided into undecomposed material （horizon Oi）, partially decomposed organic material （horizon Oe）, and fully decomposed organic material （horizon Oa）. Upon collection. DOC concentrations of samples were analyzed by a High Temperature TOC. The results showed that the annual average DOC concentration of Chinese fir （1341.7 mg·kg^-1） in the forest floor was higher than that of Castanopsis kawakamii （ 1178.9 mg·kg^-1）. Difference in DOC concentrations was observed among three horizons of the forest floor. DOC concentration of forest floor in the two forests was the highest in horizon Oe. Seasonal trends of DOC concentrations in different horizons of forest floors were similar and the maximal value occurred in autumn （or winter）. The concentration and temporal change of DOC in studied forests were probably related to the variation in moisture, temperature, biological activity and quantity of organic matter in the forest floor.

关键词： Dissolved organic carbon (DOC) Seasonal dynamics Forest floor Castanopsis kawakamii Cunninghamia lanceolata matter in the forest floor.

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文化与金融融合发展的风险传导效应

金融论坛 2016年第12期21卷 70-78页

作者：陈广水心勇南京大学商学院国家文化产业研究中心

本文对文化艺术品市场与证券投资市场间的风险传导效应进行分析。研究发现:沪深300指数对文化艺术品市场存在单向溢出效应;文化艺术品市场和创业板指数是相互影响的,二者具有正的双向波动溢出效应;另外,文化艺术品市场与创业板指数的动... 详细信息

本文对文化艺术品市场与证券投资市场间的风险传导效应进行分析。研究发现:沪深300指数对文化艺术品市场存在单向溢出效应;文化艺术品市场和创业板指数是相互影响的,二者具有正的双向波动溢出效应;另外,文化艺术品市场与创业板指数的动态波动溢出效应更明显,二者具有典型的"同上同下"趋势。基于此,本文从完善市场交易规则、健全市场准入制度、建立艺术品投资对冲机制等方面提出相关对策建议。

关键词：文化金融艺术品投资文化艺术品市场证券投资市场风险传导效应

Retrospective analysis of pathological types and imaging features in pancreatic cancer: A comprehensive study

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World Journal of Gastrointestinal Oncology 2025年第1期17卷 121-129页

作者： Yang-Gang Luo Mei Wu Hong-guang chen Pathology Department Xuanhan County People’s HospitalDazhou 636150Sichuan ProvinceChina

BACKGROUND Pancreatic cancer remains one of the most lethal malignancies worldwide,with a poor prognosis often attributed to late *** the correlation between pathological type and imaging features is crucial for early detection and appropriate treatment *** To retrospectively analyze the relationship between different pathological types of pancreatic cancer and their corresponding imaging *** We retrospectively analyzed the data of 500 patients diagnosed with pancreatic cancer between January 2010 and December 2020 at our *** types were determined by histopathological examination of the surgical spe-cimens or biopsy *** imaging features were assessed using computed tomography,magnetic resonance imaging,and endoscopic *** analyses were performed to identify significant associations between pathological types and specific imaging *** There were 320(64%)cases of pancreatic ductal adenocarcinoma,75(15%)of intraductal papillary mucinous neoplasms,50(10%)of neuroendocrine tumors,and 55(11%)of other rare *** imaging features were identified in each pathological *** ductal adenocarcinoma typically presents as a hypodense mass with poorly defined borders on computed tomography,whereas intraductal papillary mucinous neoplasms present as characteristic cystic lesions with mural *** tumors often appear as hypervascular lesions in contrast-enhanced *** analysis revealed significant correlations between specific imaging features and pathological types(P<0.001).CONCLUSION This study demonstrated a strong association between the pathological types of pancreatic cancer and imaging *** findings can enhance the accuracy of noninvasive diagnosis and guide personalized treatment approaches.

关键词： Pancreatic cancer Pathological types Imaging features Retrospective analysis Diagnostic accuracy

亚热带侵蚀红壤植被恢复后营养元素通量的变化

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生态学报 2005年第9期25卷 2312-2319页

作者：谢锦升杨玉盛陈光水高人福建农林大学林学院福建师范大学地理科学学院福州350007

对亚热带花岗岩红壤强度侵蚀地采取种草促林(ER1)、植灌促林(ER2),栽阔促林(ER3)3种生态恢复措施近20a后生态系统的营养元素储量及通量进行了研究,并以强度侵蚀地(CK1)和村旁受保护的风水林(CK2)为对照。研究结果表明:强度侵蚀地生态系... 详细信息

对亚热带花岗岩红壤强度侵蚀地采取种草促林(ER1)、植灌促林(ER2),栽阔促林(ER3)3种生态恢复措施近20a后生态系统的营养元素储量及通量进行了研究,并以强度侵蚀地(CK1)和村旁受保护的风水林(CK2)为对照。研究结果表明:强度侵蚀地生态系统储存在植被中的营养元素总量及流通量极小,植被营养元素库存量仅7.494kg/hm2,乔木层营养元素年吸收量0.505kg/hm2,年归还量0.141kg/hm2。生态恢复约20a后,植被养分库储量和通量显著增加,ER1、ER2和ER3植被的营养元素总储量分别是强度侵蚀地的22.2、99.5倍和62.3倍,乔木层营养元素年吸收量分别是强度侵蚀地的20.9、171.5倍和82.9倍,年归还量分别是强度侵蚀地的42.5、158.4倍和93.9倍,年存留量分别是强度侵蚀地的12.5、176.6倍和78.7倍。ER2的营养元素循环恢复程度最好,虽然其植被营养元素库储存量、吸收量和归还量仍低于同地带未遭侵蚀的马尾松林,但其营养元素的吸收量和存留量与CK2的已没有显著差异,生态系统已基本具有自我维持功能。而施肥、有效的水土保持工程措施、种植当地适生的固N树种、适当高的密度、加强植被管理等措施,均可能有利于营养元素循环功能的恢复。

关键词：营养元素库存量通量红壤侵蚀生态恢复

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土壤异养呼吸对气候变暖的反馈

福建师范大学学报（自然科学版） 2007年第3期23卷 104-108页

作者：盛浩杨玉盛陈光水福建省亚热带资源与环境重点实验室福建福州350007

土壤异养呼吸对气候变暖的反馈是影响陆地生态系统C预算的重要机制.绝大多数研究表明,土壤异养呼吸与未来气候变暖将构成危险的正反馈环.由于土壤有机C分解的温度敏感性问题,学术界仍有争议,对正反馈强度的准确量化尚需一个过程.少量研... 详细信息

土壤异养呼吸对气候变暖的反馈是影响陆地生态系统C预算的重要机制.绝大多数研究表明,土壤异养呼吸与未来气候变暖将构成危险的正反馈环.由于土壤有机C分解的温度敏感性问题,学术界仍有争议,对正反馈强度的准确量化尚需一个过程.少量研究表明,土壤异养呼吸对气候变暖的反馈不明显.诸多研究还发现土壤异养呼吸对气候变暖的适应现象,主要有水分限制假说、微生物适应假说和底物限制假说来解释适应现象;这种适应性将降低正反馈的影响强度.未来应重点开展以下4方面的研究;(1)加强惰性土壤有机C温度敏感性的研究;(2)深入探讨微生物对气候变暖的适应性;(3)量化土壤异养呼吸对气候变暖的反馈强度;(4)加强对多因子交互影响的研究.

关键词：土壤异养呼吸全球变暖反馈温度升高适应性 C循环

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采伐和火烧对森林氮动态的影响(英文)

生态学报 2008年第9期28卷 4460-4468页

作者：郭剑芬杨玉盛陈光水刘乐中福建省亚热带资源与环境重点实验室福建师范大学地理科学学院福州350007

森林是重要的陆地生态系统类型,它通过特有的养分循环机制维持其结构和功能。其中氮素对林木生长和发育十分重要,而且常是森林生产力的限制因素。另一方面,森林氮动态又常受到人类活动干扰的影响。根据国内外研究结果综述了采伐和火烧... 详细信息

森林是重要的陆地生态系统类型,它通过特有的养分循环机制维持其结构和功能。其中氮素对林木生长和发育十分重要,而且常是森林生产力的限制因素。另一方面,森林氮动态又常受到人类活动干扰的影响。根据国内外研究结果综述了采伐和火烧对森林氮动态的影响。结果表明采伐后环境因素的变化将影响森林N动态,其中最为关注的是采伐后一系列因素引起的N损失,如:N淋溶增加、伴随生物量的N迁移以及因径流或侵蚀增加造成的枯枝落叶层和土壤层N流失。这些N损失又将影响更新林分的生长和生产力。此外,采伐后N吸收速率一般下降,但随着植被快速生长N吸收速率将不断增加。采伐后氨化和硝化过程增强,但因短期内同化作用较弱,生态系统中大部分N将发生损失。火烧对森林N动态的短期影响主要包括:第一,火烧时N直接挥发损失;第二,火烧后N有效性增加,这主要由灰分沉积、根和微生物死亡及有机质N矿化增强等综合造成。随着时间延长,N有效性逐渐降低,这可能与火烧引起的有机质损失、植物N吸收增加、淋溶或侵蚀损失有关。然而,目前关于火烧造成的长期生态影响,如火烧后地上植被恢复与地下生物地球化学过程变化有何联系仍不太清楚。未来研究应着重于探讨氮素对森林采伐和火烧作出的短期响应将如何长期影响森林的结构和功能。此外,建议在实施营林方案时需考虑采伐和火烧对生态系统氮的影响。

关键词：森林采伐火烧氮动态

Traditional Chinese medicine in the treatment of Helicobacter pylorirelated gastritis:The mechanisms of signalling pathway regulations

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World Journal of Gastroenterology 2025年第3期31卷 11-28页

作者： Pei-Pei Zhang Liang Li Hao-Yu Qu guang-Yu chen Meng-Zhou Xie Yan-Kun chen School of Traditional Chinese Medicine Hunan University of Chinese MedicineChangsha 410200Hunan ProvinceChina Hunan Engineering Technology Research Center for Medicinal and Functional Food Hunan University of Chinese MedicineChangsha 410200Hunan ProvinceChina Key Laboratory of Traditional Chinese Medicine Heart and Lung Syndrome Differentiation and Medicated Diet and Dietotherapy Hunan University of Chinese MedicineChangsha 410200Hunan ProvinceChina School of Informatics Hunan University of Chinese MedicineChangsha 410208Hunan ProvinceChina Precision Medicine Research and Development Center Zhuhai Institute of Advanced TechnologyChinese Academy of SciencesZhuhai 519000Guangdong ProvinceChina

Helicobacter pylori-associated gastritis(HPAG)is a common condition of the gastrointestinal ***,extensive and long-term antibiotic use has resulted in numerous adverse effects,including increased resistance,gastrointestinal dysfunction,and increased recurrence *** these concerns develop,traditional Chinese medicine(TCM)may have *** is based on the concept of completeness and aims to eliminate pathogens and strengthen the *** has the potential to prevent this condition while also boosting the rate of Helicobacter pylori *** review elaborates on the mechanism of TCM treatment for HPAG based on cellular signalling pathways,which reflects the flexibility of TCM in treating diseases and the advantages of multi-level,multipathway,and multi-target treatments for HPAG.

关键词： Helicobacter pylori Helicobacter pylori-associated gastritis Traditional Chinese medicine Signalling pathway Eliminate pathogens Strengthen the body