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Effects of Tamarisk shrub on physicochemical properties of soil in coastal wetland of the Bohai Sea

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Acta Oceanologica Sinica 2016年第5期35卷 106-112页

作者： HE Xiuping WANG Baodong xie linping XIN Ming WANG Wei WANG Zicheng ZHANG Wenquan WEI Qinsheng First Institute of Oceanography State Oceanic Administration

There are many different and even controversial results concerning the effects of Tamarisk on the physicochemical properties of soil. A year-round monitoring of soil salinity, p H and moisture is conducted beneath the Tamarisk shrub in a coastal wetland in the Bohai Sea in China, to ascertain the effects of Tamarisk on the physicochemical properties of soil in coastal wetland. Compared with the control area, the soil moisture content is lower around the area of the taproot when there is less precipitation in the growing season because of water consumption by Tamarisk shrub. However, the soil moisture content is higher around the taproot when there is more precipitation in the growing season or in the non-growing period because of water conservation by the rhizosphere. The absorption of salt by the Tamarisk shrub reduces the soil salinity temporarily, but eventually salt returns to the soil by the leaching of salt on leaves by rainfall or by fallen leaves. The annual average soil moisture content beneath the Tamarisk shrub is lower than the control area by only 6.4%, indicating that the Tamarisk shrub has little effect on drought or water conservation in soils in the temperate coastal wetland with moderate annual precipitation. The annual average salinity beneath the Tamarisk shrub is 18% greater than that of the control area, indicating that Tamarisk does have an effect of rising soil salinity around Tamarisk shrubs. The soil p H value is as low as 7.3 in summer and as high as 10.2 in winter. The p H of soil near the taproot of the Tamarisk shrubs is one p H unit lower than that in the control area during the growing season. The difference in p H is less different from the control area in the non-growing season, indicating that the Tamarisk shrub does have the effect of reducing the alkalinity of soil in coastal wetland.

关键词： coastal wetland Tamarisk soil physicochemical parameter

Physical-biogeochemical interactions and potential effects on phytoplankton and Ulva prolifera in the coastal waters off Qingdao(Yellow Sea, China)

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Acta Oceanologica Sinica 2019年第2期38卷 11-23页

作者： Qinsheng Wei Baodong Wang Qingzhen Yao Zhigang Yu Mingzhu Fu Junchuan Sun Bochao Xu linping xie Ming Xin First Institute of Oceanography Ministry of Natural Resources Laboratory for Marine Ecology and Environmental Science Pilot National Laboratory for Marine Science and Technology (Qingdao) Key Laboratory of Marine Chemistry Theory and Technology of Ministry of Education Ocean University of China

In recent years, the spectacular massive green tide of Ulva prolifera has become a recurrent phenomenon appearing every summer in the coastal waters off Qingdao(Yellow Sea, China), attracting the attention of scientists and local government. Based on multidisciplinary data collected during summer and winter, this study focuses on the hydrological characteristics and regional biogeochemical processes in coastal waters off *** results show that the boundary of the Yellow Sea Cold Water Mass(YSCWM) can reach the Qingdao coastal region in summer and is locally raised to the upper layers to form coastal upwelling beyond tidal mixing and favorable wind. The regional summer upwelling off the Qingdao coast effectively enriches the nutrient concentrations in the upper water column and thus promotes growth of phytoplankton but reduces the dissolved oxygen(DO) concentration and pH value in the bottom. The regional summer upwelling off Qingdao coast may facilitate the growth and regional blooming of the U. prolifera that migrate to this region with the southerly ***, the effects of the front on the aggregation of U. prolifera may be significant. In winter, the Yellow Sea Warm Current(YSWC) extends and spreads along the offshore region off the Subei Shoal towards the Qingdao coastal sea. This tongue-shaped warm water meets the cold coastal water off Qingdao, which leads to the formation of a physical front. As a consequence, remarkable fronts of nutrient and chlorophyll a(Chl a) also form between the shoreward warm water and the cold coastal water. This study increases the understanding of the interactions between the regional physical, chemical, and biological processes off the Qingdao coast.

关键词： biogeochemical process upwelling front Ulva prolifera Qingdao coast southern Yellow Sea

Nutrient composition and distributions in coastal waters impacted by the Changjiang plume

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Acta Oceanologica Sinica 2008年第5期27卷 111-125页

作者： WANG Xiulin WANG Baodong ZHANG Chuansong SHI Xiaoyong ZHU Chenjian xie linping HAN Xiurong XIN Yu WANG Jiangtao College of Chemistry and Chemical Engineering Ocean University of China Qingdao 266100 China First Institute of Oceanography State Oceanic Administration Qingdao 266061 China

Four cruises were conducted during 2002--2003 in the Changjiang Estuary and adjacent coastal areas. The data presented show a clear coast to open sea gradient in nutrients related to the river inputs. Maximum values of chlorophyll a were typically observed at intermediate salinities at surface water and coincided with non-conservative decreases in nutrients along the salinity gradient, indicating that removal of nutrients was related to phytoplankton uptake. The seasonal variations of nutrient concentrations were just opposite to those of chlorophyll a, indicating that the seasonal variations of nutrients were mainly controlled by phytoplankton uptake, whereas riverine inputs merely weakened or balanced its extent. During the estuarine mixing, phosphate demonstrated some remobilization during all the four cruises; whereas both conservative and non-conservative behaviors for dissolved inorganic nitrogen and silicate were observed in the study area, indicating that both biotic and abiotic events may affect their behaviors during the estuarine mixing. Under the influence of freshwater inputs with high value of ratio of nitrogen to phosphorus, the estuarine and coastal waters impacted by the Changjiang plume were high （〉 30） in ratio of nitrogen to phosphorus, but rates of primary production were apparently not constrained by any kind of nutrient elements. However, the low （〈 1 ） ratio of silicate to nitrogen in most of the study area might be linked with the rapidly increasing frequency of harmful algal bloom （HAB） incidents in recent years in the coastal waters impacted by the Changjiang plume.

关键词： nutrients chlorophyll Changjiang River (Yangtze River) eutrophication mixing nutrient limitation

Recognition on the forming-vanishing process and underlying mechanisms of the hypoxia off the Yangtze River estuary

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Science China Earth Sciences 2015年第2期58卷 628-648页

作者： WEI QinSheng WANG BaoDong CHEN JianFang XIA ChangShui QU DaPeng xie linping First Institute of Oceanography State Oceanic Administration Key Laboratory of Marine Chemistry Theory and Technology Ministry of Education Ocean University of China Second Institute of Oceanography State Oceanic Administration

On the basis of compiled multidisciplinary historical data in 2006-2007 and incorporation of relevant simulation results and re- mote sensing data, we performed an in-depth study of the generation and dissipation process of the hypoxic zone and its distribu- tion morphology and structure off the Yangtze River estuary, Based on the hydrological circulation dynamics, reproduction of phytoplankton （leading to the decomposition of organic matter）, and other factors, we comprehensively and systematically inves- tigated the generation and dissipation of the hypoxic zone and underlying mechanisms for the seasonal variation in its position, explored the multi-factorial synergistic reactions during the generation and dissipation process of the hypoxic zone, and revealed the controlled mechanism for the morphology and structure of the hypoxic zone＇s distribution. Our studies indicate that in the winter and spring seasons, the hydrological environment off the Yangtze River estuary provides a water body with relatively low contents of dissolved oxygen （DO）, which is the background for the formation of a hypoxic zone. After entering into the summer season, the hypoxic zone gradually develops towards the north and becomes mature. Because of the impact of the terrain, local decomposition of organic matter, and upwelling of the Kuroshio subsurface water in July-August, the bypoxic zone off the Yang- tze River estuary exhibits the characteristics of discontinuous distribution in space and has a south and north ＂dual-core＂ structure in the inner continental shelf. In addition, there is a hypoxic core in the eastern outer continental shelf. The degrees of hypoxia vary for different areas; they are strongest overall in the north, next strongest in the south; they are weakest on the outer continen- tal shelf. In summer, the hypoxic zone in the north is related to the northward differentiation of the southern hypoxic zone and re- sults from local development and intensification. In Augus

关键词： Yangtze River estuary hypoxic zone stratification flow field environment organic decomposition

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构建发展与公平之间的“秘密平衡机制”——瑞典社民党执政经验及“瑞典模式”探究

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岭南学刊 2005年第4期 22-25页

作者：谢林平中共广东省委党校

瑞典社会民主党长达60多年执政的体制基础,是由完整而系统的社会福利体系和长期实行高税收政策这两套互相补充、互相依赖、互相约束的制度安排而成的。正是高福利与高税收之间的平衡、国家干预与市场经济之间的平衡这两套互补平衡机制... 详细信息

瑞典社会民主党长达60多年执政的体制基础,是由完整而系统的社会福利体系和长期实行高税收政策这两套互相补充、互相依赖、互相约束的制度安排而成的。正是高福利与高税收之间的平衡、国家干预与市场经济之间的平衡这两套互补平衡机制保证了财富增长和社会公平之间的均衡,使得全体国民能够普遍地分享不断地做大的“蛋糕”(社会财富)。

关键词：平衡机制瑞典模式执政经验社民党秘密社会福利体系体制基础税收政策制度安排社会公平财富增长市场经济国家干预社会财富民主党均衡分享

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我国近岸海域富营养化评价新方法及应用

海洋学报 2012年第4期34卷 61-66页

作者：王保栋孙霞韦钦胜谢琳萍国家海洋局第一海洋研究所山东青岛266061

参考目前国际上被广泛应用的第2代富营养化评价方法体系,结合我国近岸海域生态环境特点和监测资料现状,建立了一种以压力-状态-响应模式为基本框架、以富营养化症状为主的第2代近岸海域富营养化评价体系。实际应用结果表明,应用本方法... 详细信息

参考目前国际上被广泛应用的第2代富营养化评价方法体系,结合我国近岸海域生态环境特点和监测资料现状,建立了一种以压力-状态-响应模式为基本框架、以富营养化症状为主的第2代近岸海域富营养化评价体系。实际应用结果表明,应用本方法得出的长江口海域富营养化状况评价结论,与目前国外主流评价方法的评价结论一致,而且本方法具有评价指标代表性强、数据资料易得、评价标准有据、方法简便易行等优点。

关键词：富营养化评价方法近岸海域河口海湾

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福建荔枝酸腐菌的生物学特性研究

热带作物学报 2009年第12期30卷 1858-1864页

作者：蔡学清林通谢玲平吴昌镇林娜胡方平福建农林大学植物保护学院福建福州350002 福建农林大学生物农药与化学生物学教育部重点实验室福建福州350002

对福建省分离的荔枝酸腐病菌的形态学特征、生长速度、产孢、分生孢子萌发及侵染的影响因子进行研究。结果表明:福建荔枝酸腐病的病原菌为白地霉(Geotrichum candidum);该菌最适生长温度为24～28℃,pH值为8～9,光照时间为12～20h,最适... 详细信息

对福建省分离的荔枝酸腐病菌的形态学特征、生长速度、产孢、分生孢子萌发及侵染的影响因子进行研究。结果表明:福建荔枝酸腐病的病原菌为白地霉(Geotrichum candidum);该菌最适生长温度为24～28℃,pH值为8～9,光照时间为12～20h,最适生长与产孢培养基为PDA,分生孢子致死温度为65℃,10min;该菌分生孢子的萌发率与pH值、培养基、光照时间、温度及营养成分等有关,其中该菌在24～32℃,光照时间为16～20h,培养15d时所产生的分生孢子萌发率最高;该菌不同培养时间所产生的分生孢子及不同温度条件对其侵染荔枝的能力也不同,培养10d所产生的分生孢子侵染力最强,侵染最适温度为28～32℃。该菌除了寄生荔枝外,人工接种还能侵染胡萝卜、番茄、水蜜桃、龙眼、葡萄、茄子和黄瓜。试验结果为进一步了解该病的发生危害提供理论依据。

关键词：荔枝酸腐菌生物学特性

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春季东海营养盐的空间分布格局和控制机制

海洋科学进展 2023年第4期41卷 622-636页

作者：吴林妮韦钦胜辛明王明玉滕飞谢琳萍孙霞王保栋自然资源部第一海洋研究所山东青岛266061 崂山实验室海洋生态与环境科学功能实验室山东青岛266237

基于2017年5月所获取的温度、盐度、营养盐和叶绿素a(Chl a)等调查资料,本文从多学科交叉的视角分析了春季东海营养盐的空间分布格局及其与水文动力状况的关系,探讨了黑潮次表层水涌升和跨陆架输运对营养盐与Chl a分布的影响。结果表明... 详细信息

基于2017年5月所获取的温度、盐度、营养盐和叶绿素a(Chl a)等调查资料,本文从多学科交叉的视角分析了春季东海营养盐的空间分布格局及其与水文动力状况的关系,探讨了黑潮次表层水涌升和跨陆架输运对营养盐与Chl a分布的影响。结果表明:浙江近海和调查海域东北部为2个营养盐高值区,且浙江近海的Chl a质量浓度较高;调查海域东南部上层总体具有低营养盐、低Chl a的特征,而该海域底层水体中的磷酸盐(PO4-P)浓度较高。调查海域的水团格局对营养盐浓度和分布具有重要的调控作用,其中浙闽沿岸水和黄海沿岸流的南下输运对应形成了2个营养盐高值区;受黑潮次表层水入侵的影响,调查海域东南部底层呈现出高PO4-P的特征。春季黑潮次表层水由台湾东北部向东海陆架的入侵和涌升不仅显著影响了研究海域的温、盐度场和流场格局,同时也是实现营养盐跨陆架输运的重要通道和途径。受浙闽沿岸水和黑潮次表层水对营养盐输运的影响,在杭州湾东南—浙江近海对应形成了Chl a高值区;富PO4-P且具有适宜N/P值的黑潮次表层水向陆架入侵所形成的上升流对维持近海的初级生产具有潜在的重要作用。本研究揭示了春季东海营养盐的空间分布格局及其与相关水文、生态过程的关系,为阐释该海域营养盐的控制机制和生态影响等提供了科学依据。

关键词：营养盐跨陆架输运上升流黑潮次表层水东海

DETERMINATION OF MICROCRACK BOUNDARY RESULTING FROM ROCK BLASTING WITH SEISMIC TRAVELTIME TOMOGRAPHY

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中国有色金属学会会刊：英文版 1998年第1期8卷 155-160页

作者： Zhang, Jichun Song, linping Southwest Jiaotong Univ Chengdu China

ＤＥＴＥＲＭＩＮＡＴＩＯＮＯＦＭＩＣＲＯＣＲＡＣＫＢＯＵＮＤＡＲＹＲＥＳＵＬＴＩＮＧＦＲＯＭＲＯＣＫＢＬＡＳＴＩＮＧＷＩＴＨＳＥＩＳＭＩＣＴＲＡＶＥＬＴＩＭＥＴＯＭＯＧＲＡＰＨＹ①ＺｈａｎｇＪｉｃｈｕｎＤｅｐａｒｔｍ... 详细信息

ＤＥＴＥＲＭＩＮＡＴＩＯＮＯＦＭＩＣＲＯＣＲＡＣＫＢＯＵＮＤＡＲＹＲＥＳＵＬＴＩＮＧＦＲＯＭＲＯＣＫＢＬＡＳＴＩＮＧＷＩＴＨＳＥＩＳＭＩＣＴＲＡＶＥＬＴＩＭＥＴＯＭＯＧＲＡＰＨＹ①ＺｈａｎｇＪｉｃｈｕｎＤｅｐａｒｔｍｅｎｔｏｆＵｎｄｅｒｇｒｏｕｎｄＥ...

关键词： rock mass blasting microcracking zone measuring method tomography