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学者姓名:陈昌雄
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| GB/T 7714 | Nguyen, Van Hop , Chen, Chang Xiong , Nguyen, Quoc Hung et al. Chemical Composition and Antimicrobial Activities of Essential Oils from Meistera verrucosa [J]. | CHEMISTRY OF NATURAL COMPOUNDS , 2023 , 59 (5) : 987-989 . |
| MLA | Nguyen, Van Hop et al. "Chemical Composition and Antimicrobial Activities of Essential Oils from Meistera verrucosa" . | CHEMISTRY OF NATURAL COMPOUNDS 59 . 5 (2023) : 987-989 . |
| APA | Nguyen, Van Hop , Chen, Chang Xiong , Nguyen, Quoc Hung , Le, Thanh Tho , Duong, Thao Vi , Hua, Truong Chinh et al. Chemical Composition and Antimicrobial Activities of Essential Oils from Meistera verrucosa . | CHEMISTRY OF NATURAL COMPOUNDS , 2023 , 59 (5) , 987-989 . |
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Cadmium is one of the most serious soil pollutants and negatively affects human health. Due to the rapid industrial development, cadmium pollution of agricultural soils in China has received much attention. In this study, we applied a meta-analysis method to assess the current cadmium distribution in agricultural soils in China and assess its potential risk. A full dataset from 338 published studies with 76388 sampling points was compiled to systematically assess the cadmium content in Chinese agricultural soils by using spatial interpolation and geological accumulation index methods. The results showed that the mean cadmium content in agricultural soils in China was 0.35 mg/kg, which was higher than the currently known background cadmium content in Chinese soils (0.097 mg/kg). The spatial distribution of cadmium content in agricultural soils mainly showed that the cadmium content in southern China was greater than that in northern China. The highest cadmium content in agricultural soils was found in mining and smelting areas. This study implies that the increase in soil cadmium content since the 1990s is mainly based on the influence of human activities, especially mining activities. Our study suggests that stricter management should be performed to prevent cadmium pollution in agricultural soil in China in the future.
Keyword :
cadmium cadmium China China environmental risk assessment environmental risk assessment Soil pollution Soil pollution
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| GB/T 7714 | Lin, Chenlei , Chen, Yifei , Fang, Shuzhen et al. CADMIUM CONTAMINATION OF CHINESE AGRICULTURAL SOILS [J]. | FRESENIUS ENVIRONMENTAL BULLETIN , 2022 , 31 (3) : 2466-2473 . |
| MLA | Lin, Chenlei et al. "CADMIUM CONTAMINATION OF CHINESE AGRICULTURAL SOILS" . | FRESENIUS ENVIRONMENTAL BULLETIN 31 . 3 (2022) : 2466-2473 . |
| APA | Lin, Chenlei , Chen, Yifei , Fang, Shuzhen , Wang, Yuchao , Zheng, Dexiang , Chen, Changxiong et al. CADMIUM CONTAMINATION OF CHINESE AGRICULTURAL SOILS . | FRESENIUS ENVIRONMENTAL BULLETIN , 2022 , 31 (3) , 2466-2473 . |
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| GB/T 7714 | Van Hop Nguyen , Chen, Chang Xiong , Hong Thien Van et al. CHEMICAL PROFILES AND ANTIBACTERIAL ACTIVITY OF ESSENTIAL OILS FROM RHIZOMES OF Aspidistra phanluongii [J]. | CHEMISTRY OF NATURAL COMPOUNDS , 2022 , 58 (3) : 562-564 . |
| MLA | Van Hop Nguyen et al. "CHEMICAL PROFILES AND ANTIBACTERIAL ACTIVITY OF ESSENTIAL OILS FROM RHIZOMES OF Aspidistra phanluongii" . | CHEMISTRY OF NATURAL COMPOUNDS 58 . 3 (2022) : 562-564 . |
| APA | Van Hop Nguyen , Chen, Chang Xiong , Hong Thien Van , Nhat Tam Le , Van Hai Chu , Huynh Anh Vu Truong et al. CHEMICAL PROFILES AND ANTIBACTERIAL ACTIVITY OF ESSENTIAL OILS FROM RHIZOMES OF Aspidistra phanluongii . | CHEMISTRY OF NATURAL COMPOUNDS , 2022 , 58 (3) , 562-564 . |
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Elevation is important for determining the nutrient biogeochemical cycle in forest ecosystems. Changes in the ecological stoichiometry of nutrients along an elevation gradient can be used to predict how an element cycle responds in the midst of global climate change.Weinvestigated changes in concentrations of and relationships between nitrogen (N), phosphorus (P), potassium (K), calcium (Ca), and magnesium (Mg) in the leaves and roots of the dominant tree species, Castanopsis fargesii, along an elevation gradient (from 500 to 1,000 m above mean sea level) in a subtropical natural forest in China. We analyzed correlations between C. fargesii's above-ground biomass and stoichiometry with environmental factors. We also analyzed the soil and plant stoichiometry of this C. fargesii population. Our results showed that leaf N decreased while leaf K and Ca increased at higher elevations. Meanwhile, leaf P showed no relationship with elevation. The leaf N:P indicated that C. fargesii was limited by N. Elevation gradients contributed 46.40% of the total variance of ecological stoichiometry when assessing environmental factors. Our research may provide a theoretical basis for the biogeochemical cycle along with better forest management and fertilization for this C. fargesii population.
Keyword :
Castanopsis fargesii Castanopsis fargesii Elevation Elevation Global warming Global warming Leaf stoichiometry Leaf stoichiometry Subtropical evergreen broad-leaved forest Subtropical evergreen broad-leaved forest
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| GB/T 7714 | Liu, Danping , Zheng, Dexiang , Xu, Yaoyao et al. Changes in the stoichiometry of Castanopsis fargesii along an elevation gradient in a Chinese subtropical forest [J]. | PEERJ , 2021 , 9 . |
| MLA | Liu, Danping et al. "Changes in the stoichiometry of Castanopsis fargesii along an elevation gradient in a Chinese subtropical forest" . | PEERJ 9 (2021) . |
| APA | Liu, Danping , Zheng, Dexiang , Xu, Yaoyao , Chen, Yifei , Wang, Hesong , Wang, Ku et al. Changes in the stoichiometry of Castanopsis fargesii along an elevation gradient in a Chinese subtropical forest . | PEERJ , 2021 , 9 . |
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以龙岩国家森公园为研究对象,运用层次分析法(AHP),选取合适的评价因子,对景观林配置进行研究,分为目标层、综合层、项目层和因子层四个层级来构建评价层次结构模型,选择了19个因子作为评价因子。采用专家赋值法对各层级各指标权重进行计算,得出权重值。根据评价结果以及实地调研情况,提出森林公园景观林配置改造方案,次生常绿阔叶林可以适当补植,并增加乔木和灌木的数量以及种类,而针阔叶混交林,由于林分结构单一,需要增加阔叶林的比例,对于竹林,应伐去不健康的竹子,进行定期养护管理。在树种选择上以乡土树种为主,外来树种为辅,丰富森林公园内景观林的季相变化。
Keyword :
层次分析 层次分析 景观林配置 景观林配置 评价因子 评价因子
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| GB/T 7714 | 薛凌云 , 罗洁明 , 陈昌雄 et al. 基于层次分析法的景观林配置评价 [J]. | 武夷学院学报 , 2020 , 39 (12) : 19-24 . |
| MLA | 薛凌云 et al. "基于层次分析法的景观林配置评价" . | 武夷学院学报 39 . 12 (2020) : 19-24 . |
| APA | 薛凌云 , 罗洁明 , 陈昌雄 , 郭秀平 . 基于层次分析法的景观林配置评价 . | 武夷学院学报 , 2020 , 39 (12) , 19-24 . |
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结合中国南方集体林区林权制度改革后的森林经营现状,对森林经营联合认证在其发展的有利条件、障碍及机遇进行深入分析。结果表明:林权改革发展、林业合作社兴起以及联合认证花费较低、信息技术共享等为南方集体林区发展森林联合认证创造了有利条件;林农森林认证思想薄弱、农村缺乏专业技术人才与资金以及林农分布较为分散等问题在一定程度上阻碍了联合认证的发展。此外,在南方集体林区发展森林联合认证还有一系列的机遇,例如"三农政策""扶贫政策"等国家政策的保障,巨大的林产品出口量推动合作社林产品的认证以及社区林业与林区联合认证理念契合等。因此,针对其障碍,提出开展认证培训、增设认证试点、拓宽资金渠道及明确和统一高保护价值森林定义等相应的改善对策。
Keyword :
南方集体林区 南方集体林区 林农 林农 林权制度改革 林权制度改革 社区林业 社区林业 联合认证 联合认证
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| GB/T 7714 | 刘丹萍 , 许瑶瑶 , 张硕 et al. 南方集体林区森林经营联合认证实践应用分析 [J]. | 林业经济问题 , 2019 , 39 (06) : 578-583 . |
| MLA | 刘丹萍 et al. "南方集体林区森林经营联合认证实践应用分析" . | 林业经济问题 39 . 06 (2019) : 578-583 . |
| APA | 刘丹萍 , 许瑶瑶 , 张硕 , 邓博文 , 钟兆全 , 王荔英 et al. 南方集体林区森林经营联合认证实践应用分析 . | 林业经济问题 , 2019 , 39 (06) , 578-583 . |
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在丝栗栲次生林的阳坡和阴坡各设置1块50 m×50 m的典型样地,样地中丝栗栲种群占绝对优势,丝栗栲幼苗幼树占林分更新总株数的32.29%。阳坡丝栗栲种群密度和幼苗幼树(DBH<7.5 cm)密度均小于阴坡,但中树(7.5 cm≤DBH<22.5 cm)和大树(DBH≥22.5 cm)密度大于阴坡。2个坡向均表现为幼苗幼树多,中树大树少,属于增长型种群,幼苗贮备量大。2个坡向幼苗幼树密度在地径和树高等级上差异不明显,随地径和树高的增大整体呈递减趋势。地径分布呈倒"J"形曲线,树高分布呈明显的非对称性山状曲线,接近幼苗幼树平均高的株数较多,幼苗幼树地径和树高结构良好,供给稳定。
Keyword :
丝栗栲 丝栗栲 福建省永安市 福建省永安市 种群结构 种群结构 空间分布 空间分布
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| GB/T 7714 | 罗洁明 , 张巧巧 , 常赜 et al. 福建省永安市丝栗栲次生林林分结构特征研究 [J]. | 江苏农业科学 , 2019 , 47 (08) : 162-165 . |
| MLA | 罗洁明 et al. "福建省永安市丝栗栲次生林林分结构特征研究" . | 江苏农业科学 47 . 08 (2019) : 162-165 . |
| APA | 罗洁明 , 张巧巧 , 常赜 , 陈昌雄 . 福建省永安市丝栗栲次生林林分结构特征研究 . | 江苏农业科学 , 2019 , 47 (08) , 162-165 . |
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以新罗区基本图为基准,利用ArcGIS软件绘出龙岩国家森林公园边界线,道路线及等高线图,并建立DEM模型。选择视觉几率(St),相对坡度(Sa)及观赏距离(Sd)三个因素对研究区域进行景观视觉敏感度分析,将三个因素从高到低分为I~IV四个等级,采用模糊综合分析方法,按照隶属度原则计算出每个栅格的三个因素对四个级别的隶属值,结合权重,最终得出研究区景观视觉敏感度分布情况。根据计算结果,I级与II级敏感区域面积占比约为68%,说明研究区域景观视觉敏感度较高,同时还得出敏感度级别易变化的面积占比约为17%。依据研究结果,结合景观视觉敏感度的醒目程度分析,从两个角度对研究区提供建议,旨在为森林公园合理开发、规划、利用景观资源提供依据。
Keyword :
ArcGIS软件 ArcGIS软件 景观视觉敏感度 景观视觉敏感度 森林公园 森林公园 模糊综合分析 模糊综合分析 龙岩新罗区 龙岩新罗区
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| GB/T 7714 | 罗洁明 , 陈昌雄 , 吴昊宪 . 龙岩国家森林公园景观视觉敏感度模糊分析 [J]. | 武夷学院学报 , 2019 , 38 (06) : 38-42 . |
| MLA | 罗洁明 et al. "龙岩国家森林公园景观视觉敏感度模糊分析" . | 武夷学院学报 38 . 06 (2019) : 38-42 . |
| APA | 罗洁明 , 陈昌雄 , 吴昊宪 . 龙岩国家森林公园景观视觉敏感度模糊分析 . | 武夷学院学报 , 2019 , 38 (06) , 38-42 . |
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在我国林业战略目标处于转型的时代背景下,研究森林健康问题,不仅是完善生态化建设的理论内容,对营林工作的开展也起到了重要作用。本研究在永安市选取了20块具有代表性的标准地,以其中一块作为对照标准地,采用健康距离法,对其森林健康进行评价研究。结果表明,健康标准地有3块,亚健康标准地有9块,不健康和病态标准地共7块。树种组成单一和病虫害是造成森林不健康的最主要问题。其中树种组成单一说明森林结构不合理,也是导致病虫害严重的原因之一。对于不健康和病态的森林要优先治理,受害严重的地区可进行彻底的改造;对于亚健康的森林辅以人工更新,合理疏伐和补植;对健康的森林要继续保持其稳定,加强病虫害防治。这一研究在一定程度上弥补了当地对森林健康研究的缺乏,对日后开展更全面的健康评价研究具有一定的参考价值。
Keyword :
健康距离 健康距离 森林健康 森林健康 评价指标 评价指标
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| GB/T 7714 | 常赜 , 陈昌雄 , 罗洁明 . 永安市森林健康评价研究 [J]. | 武夷学院学报 , 2018 , 37 (03) : 69-73 . |
| MLA | 常赜 et al. "永安市森林健康评价研究" . | 武夷学院学报 37 . 03 (2018) : 69-73 . |
| APA | 常赜 , 陈昌雄 , 罗洁明 . 永安市森林健康评价研究 . | 武夷学院学报 , 2018 , 37 (03) , 69-73 . |
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探讨母树径级、贮藏温度及贮藏时间对胖大海种子发芽率的影响.观察不同贮藏条件下种子的发芽情况,通过指数函数建立不同贮藏温度下胖大海种子发芽率与母树径级及贮藏时间的关系模型.结果表明:母树直径50~59 cm提供的种子发芽率、活力最大;母树直径<30 cm提供的种子发芽率、活力最小.0℃贮藏下种子的平均发芽率最高,常温贮藏下最低.胖大海种子的活力和发芽率随贮藏时间的延长而降低,保持种子50%的发芽率,其在-5℃、0℃和常温3个贮藏温度下分别不能长于135、195、45 d.综合分析表明,直径过大或过小的母树提供的种子发芽率均较低,从母树直径50~59 cm选种最佳,最好在0℃环境下贮藏种子,可以延长种子寿命至195 d,但胖大海种子不宜长久贮藏,优质的胖大海种子贮藏时间不能超过270 d.这为胖大海优种选择、贮藏及复壮生产提供了依据.
Keyword :
发芽率 发芽率 母树 母树 种子 种子 胖大海 胖大海 贮藏时间 贮藏时间 贮藏温度 贮藏温度
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| GB/T 7714 | 张巧巧 , PHAM Van Huong , 陈昌雄 et al. 母树径级与贮藏对胖大海种子发芽率的影响 [J]. | 福建农林大学学报(自然科学版) , 2017 , 46 (02) : 159-165 . |
| MLA | 张巧巧 et al. "母树径级与贮藏对胖大海种子发芽率的影响" . | 福建农林大学学报(自然科学版) 46 . 02 (2017) : 159-165 . |
| APA | 张巧巧 , PHAM Van Huong , 陈昌雄 , LE Thi Hien , 陈世品 . 母树径级与贮藏对胖大海种子发芽率的影响 . | 福建农林大学学报(自然科学版) , 2017 , 46 (02) , 159-165 . |
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