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Structural and Histochemical Features of the Slow-Growing Perennial Coptis chinensis Franch.(Ranunculaceae)

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Phyton-International Journal of Experimental Botany 2021年第6期90卷 1685-1696页

作者： Jingyuan Yang Jie zhou Jiaojiao Jin Yi Li Xia Zhang Teng Li Mengdi Zhang Xiaodong Cai Chaodong Yang cunyu zhou Hubei Province Key Laboratory of Conservation Biology for Shennongjia Golden Monkey Shennongjia National Park AdministrationMuyu Town42400China Ningxia Jiesi Environmental Protection Technology Co. Ltd.Yinchuan750000China Engineering Research Center of Ecology and Agriculture Use of Wetland Ministry of EducationHubei Key Laboratory of Waterlogging Disaster and Agricultural Use of WetlandYangtze UniversityJingzhou434025China

Huanglian(Coptis chinensis Franch.)is a slow-growing perennial medicinal herb with considerable economic *** study aimed to determine the structural characteristics and the levels of berberine deposits in the organs and tissues of Huanglian using light and epifluorescence *** adventitious roots are composed of primary and secondary structures with endodermis,exodermis,and *** rhizome structures are composed of primary and secondary structures with cuticle and *** leaves are composed of sclerenchymatous rings,isolateral mesophyll,and thin *** detected berberine in the xylem walls of the roots and rhizomes as well as in the sclerenchymatous rings of the *** postulate that as the exodermis is developed,the deposition of berberine in the xylem closest to the root tips may affect water and nutrient absorption and *** blades had a thin cuticle and isolateral mesophyll,suggesting shade *** structural and histochemical features suggest that Huanglian is adapted to the slow growing nature of a shady environment.

关键词： Berberine deposition Coptis chinensis histochemistry structure

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大气主要温室气体源汇及其研究进展

生态环境 2006年第6期15卷 1397-1402页

作者：周存宇长江大学园艺园林学院湖北荆州434025

全球气候变暖是全球生态学的重点研究领域,近10余年来在世界范围内对引起气候变暖的温室气体源和汇进行了广泛的研究。文章综述了大气中几种主要温室气体(CO2、CH4和N2O)源和汇的种类及大小,认为在3种温室气体的源汇通量方面仍缺乏准确... 详细信息

全球气候变暖是全球生态学的重点研究领域,近10余年来在世界范围内对引起气候变暖的温室气体源和汇进行了广泛的研究。文章综述了大气中几种主要温室气体(CO2、CH4和N2O)源和汇的种类及大小,认为在3种温室气体的源汇通量方面仍缺乏准确的定量认识,并存在许多不确定因素。通过分析近10年的国内外文献,总结出大气主要温室气体源汇的国际研究趋势主要是研究方法日益先进、研究地域不断扩大、注重温室气体通量对全球变化的响应以及多学科综合研究等方面。国内对温室气体源汇研究起步较晚,且存在观测点少、观测频度低、研究不够系统等不足,近几年在全国范围内实施的有关碳循环的重大科研项目在很大程度上促进了我国在温室气体源汇研究的发展。

关键词：温室气体源汇进展

1992-2022年菜子湖流域景观格局变化分析

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湖北大学学报（自然科学版） 2025年第1期47卷 63-74页

作者：路彤赵素婷周存宇孙君瑶长江大学园艺园林学院湖北荆州434025 中国科学院武汉植物园水生植物研究中心湖北武汉430074 中国科学院武汉文献情报中心科技大数据湖北省重点实验室湖北武汉430071

通过分析1992—2022年7期土地利用遥感影像,使用ArcGIS和Fragstats软件评估菜子湖流域30年间景观格局的变化。研究旨在揭示流域景观演变的特征与趋势,及其对生态系统健康和服务功能的潜在影响。结果表明,菜子湖流域的土地利用情况在研... 详细信息

通过分析1992—2022年7期土地利用遥感影像,使用ArcGIS和Fragstats软件评估菜子湖流域30年间景观格局的变化。研究旨在揭示流域景观演变的特征与趋势,及其对生态系统健康和服务功能的潜在影响。结果表明,菜子湖流域的土地利用情况在研究期间整体保持稳定,耕地为流域内最主要的土地利用类型,建筑用地的增长趋势则尤为显著。研究发现耕地的破碎化程度较高,表明农业用地正在分割和转变,可能影响区域生态连通性和生物多样性。相比之下,水体斑块的破碎化有所减少,显示出流域水生态系统的一定恢复或改善。林地破碎化的缓和趋势及草地和裸地变化的不显著性,反映了人类管理措施和自然恢复力量的共同作用。菜子湖流域中部地区范围的优势斑块具有良好的连接性。流域东北自西南一带景观受到一种或少数几种优势斑块类型所支配,30年间景观呈现多样化发展。尽管菜子湖流域的景观稳定性显示出积极的增长趋势,但整体水平仍处于较低状态,这表明该流域的生态系统面临来自不断变化的人类活动和自然条件的持续压力,尤其是人口密度对研究区景观格局变化影响较大。本研究强调了对菜子湖流域内景观格局动态变化规律的深入理解,以及其对维护生态系统健康和服务功能的重要性。

关键词：土地利用景观格局指数景观稳定性驱动力分析

CO_2 efflux from different forest soils and impact factors in Dinghu Mountain, China

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Science China Earth Sciences 2005年第Z1期48卷 198-206页

作者： zhou cunyu, zhou Guoyi, ZHANG Deqiang, WANG Yinghong & LIU Shizhong Dinghushan Forest Ecosystem Research Station, Chinese Academy of Sciences, Guangzhou 510650, China Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China Dinghushan Forest Ecosystem Research Station Chinese Academy of Sciences Guangzhou 510650 China Institute of Atmospheric Physics Chinese Academy of Sciences Beijing 100029 China

CO2 fluxes from soils and related environmental factors were measured in three forest ecosystems of Dinghu Mountain using static chamber-gas chromatograph technique for one year. The seasonal pattern of CO2 flux, contribution of litter on total CO2 flux and the correlations of CO2 flux with soil temperature and soil water content were examined for each type of forest. The results were given as followings: (1) The seasonal patterns of CO2 flux from soil of the three types of forest were similar, with a higher CO2 flux in rainy season than in dry season. The comparative relations of mean annual CO2 fluxes between the three sites were expressed as:monsoon forest ＞ mixed forest ＞ pine forest. (2) CO2 fluxes from litter decomposition in monsoon forest, mixed forest and pine forest accounted for 24.43%, 41.75% and 29.23% of the corresponding total CO2 fluxes from forest floor, respectively. (3) Significant relationships were found between CO2 fluxes and soil temperatures at 5 cm depth for the three types of forest, which could be best described by exponential equations. The calculated Q10 values based on soil temperature at 5 cm depth ranged from 1.86 to 3.24. More significant relationships were found between CO2 fluxes and soil water content when the annual variation coefficients of soil moisture were higher.

关键词： CO2 flux, litter decomposition, Q10, soil moisture.

Seasonal dynamics of soil CO_2 effluxes with responses to environmental factors in lower subtropical forests of China

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Science China Earth Sciences 2006年第S2期49卷 139-149页

作者： ZHANG Deqiang, SUN Xiaomin, zhou Guoyi, YAN Junhua, WANG Yuesi, LIU Shizhong, zhou cunyu, LIU Juxiu, TANG Xuli, LI Jiong & ZHANG Qianmei South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China Institute of Geographical Sciences and Natural Resoureces, Chinese Academy of Sciences, Beijing 100101, China Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100083, China South China Botanical Garden Chinese Academy of Sciences Guangzhou China Institute of Geographical Sciences and Natural Resoureces Chinese Academy of Sciences Beijing China Institute of Atmospheric Physics Chinese Academy of Sciences Beijing China

Seasonal metrics and environmental responses to forestry soil surface CO2 emission effluxes among three types of lower subtropical forests were consistently monitored over two years with static chamber-gas chromatograph techniques among three types of lower subtropical forests. Results showed that annual CO2 effluxes (S+L) reached 3942.20, 3422.36 and 2163.02 CO2 g·m-2·a-1, respectively in the monsoon evergreen broadleaf forest, mixed broadleaf-coniferous forest and coniferous forest. All the three types of forests revealed the same characteristics of seasonal changes with the CO2 effluxes peaking throughout June to August. During this peaking period, the effluxes were 35.9%, 38.1% and 40.2% of the total annual effluxes, respectively. The CO2 emission process responding to the environmental factors displayed significantly different patterns in forestry soils of the three types of forests. The coniferous forest (CF) was more sensitive to temperature than the other two types. The Q10 values were higher, along with greater seasonal variations of the CO2 efflux, indicating that the structurally unique forestry ecosystem has disadvantage against interferences. All the three types of forestry CO2 effluxes showed significant correlation with the soil temperature (Ts), soil water content (Ms) and air pressure (Pa). However, stepwise regression analysis indicated no significant correlation between air pressure and the soil CO2 efflux. With an empirical model to measure soil temperature and water content in 5 cm beneath the soil surface, the CO2 effluxes accounting for 75.7%, 77.8% and 86.5% of the efflux variability respectively in soils of BF, MF and PF were calculated. This model can be better used to evaluate the CO2 emission of soils under water stress and arid or semi-arid conditions.

关键词： forestry soil CO2 emission seasonal dynamic metrics environmental factors responses.

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重楼属植物组织培养研究进展

北方园艺 2017年第20期 184-189页

作者：周玲姚振郭永兵周存宇长江大学园艺园林学院湖北荆州434025 神农架林区林业科学研究所湖北神农架442400

从外植体选择与处理、种子无菌萌发、再生体系途径(愈伤组织途径、原球茎途径、体细胞胚途径)及目前组织培养中存在的问题等方面综述了近年来重楼属植物组织培养的研究现状,并对今后的发展提出了建议,旨在为解决重楼属植物快速繁育问题... 详细信息

从外植体选择与处理、种子无菌萌发、再生体系途径(愈伤组织途径、原球茎途径、体细胞胚途径)及目前组织培养中存在的问题等方面综述了近年来重楼属植物组织培养的研究现状,并对今后的发展提出了建议,旨在为解决重楼属植物快速繁育问题提供参考依据。

关键词：重楼属植物组织培养快繁

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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蜈蚣草的解剖结构与组织化学特征

植物研究 2023年第1期43卷 20-29页

作者：李腾周存宇杨朝东刘占峰长江大学园艺园林学院荆州434025 中国科学院海岛与海岸带生态恢复重点实验室/中国科学院华南植物园广州510650

蜈蚣草(Pteris vittata)是多年生的超积累砷植物,并用于修复受重金属污染的土壤。利用光学显微镜和荧光显微镜来研究蜈蚣草的解剖结构及组织化学特征,以此明确该物种适应干旱岩生环境,以及具有离子超富集作用的特点。结果表明(:1)蜈蚣... 详细信息

蜈蚣草(Pteris vittata)是多年生的超积累砷植物,并用于修复受重金属污染的土壤。利用光学显微镜和荧光显微镜来研究蜈蚣草的解剖结构及组织化学特征,以此明确该物种适应干旱岩生环境,以及具有离子超富集作用的特点。结果表明(:1)蜈蚣草孢子体的根状茎、不定根和叶的结构均为初生结构,不定根的结构由内而外包括维管柱、内皮层、皮层、木质化厚壁组织层和表皮。(2)根状茎结构由内而外包括网状中柱、内皮层、皮层、表皮外覆盖的角质层。(3)羽状复叶的总叶柄的结构由内而外包括维管束、内皮层、皮层、厚壁组织层、表皮外覆盖的角质层。叶片为异面叶,表皮内方具厚壁层,叶表皮具角质层,仅下表皮有气孔。(4)蜈蚣草根表皮、皮层与根毛的表面富含果胶,皮层木质化;黄连素离子通透性试验结果显示,根毛、根表皮和皮层滞留大量黄连素离子。综上,植物体的内皮层、木质化厚壁组织层、异面叶和厚的角质层结构说明蜈蚣草适应岩生环境,根具木质化皮层和富含果胶的组织化学特点,以及离子通透性试验表明其与离子超积累功能有关。

关键词：内皮层木质化皮层果胶离子通透性厚壁组织层

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中国湖北红豆杉属一新变型

西北植物学报 2016年第8期36卷 1707-1709页

作者：费永俊周存宇袁龙义沈瑾花齐蕊长江大学园艺园林学院湖北荆州434025

报道了红豆杉属1新变型——保康红豆杉[Taxus chinensis(Pilger)Rehd *** ***]。该变型与原变种南方红豆杉[***(Pilger)***(Lemee et Lévl.)Cheng et ***]主要区别在于其雄株上有部分枝条发育成雌性枝条或雌雄球花在同一果枝上,呈现雌... 详细信息

报道了红豆杉属1新变型——保康红豆杉[Taxus chinensis(Pilger)Rehd *** ***]。该变型与原变种南方红豆杉[***(Pilger)***(Lemee et Lévl.)Cheng et ***]主要区别在于其雄株上有部分枝条发育成雌性枝条或雌雄球花在同一果枝上,呈现雌雄同株现象。凭证模式标本藏于武汉植物园标本馆(编号***001,HIB)。

关键词：红豆杉属变型保康红豆杉雌雄同株