Observations on the zooplankton in the reedbelt area of the Neusiedlersee

Weekly sampling and simultaneous measurements of temperature, pH, and conductivity were made at three stations in the reedbelt, between 1980–82. 20 cladoceran and 14 copepod species were encountered, of whichCyclops vicinus vicinus was found in the lake for the first time. Of the measured environmental features, temperature showed the greatest seasonal changes; pH and conductivity were less variable. There were, both quantitatively and qualitatively, constant differences between the three stations, although they lay close to each other.     

中老铁路经济廊带生态质量及其与人类活动的关系

区域生态质量很大程度上受人类活动强度影响,制约着区域经济可持续发展。以中老铁路经济廊带为对象,重点研究区内人类活动强度对区域生态环境的影响。选取1999、2009、2019年遥感影像计算遥感生态指数(RSEI),采用空间自相关及局域G统计量探测研究区生态质量的时空演变规律,并结合同期人口密度构建地理加权回归模型,定量分析区内人类活动强度引起的生态效应。研究表明: 1999—2019年,区内生态质量经历了先升后降的变化,RSEI均值由1999年的0.645升为2009年的0.738,随后又降为2019年的0.721,中部地区生态质量波动较大;基于地理加权回归模型(GWR)拟合人口密度与生态质量的效果明显好于最小二乘法,基于GWR的不同时期R²均高于0.7且拟合效果稳定,2019年拟合度最好(R²为0.785),1999、2009年R²分别为0.726、0.754;中老铁路沿线南部万象一带的生态质量对人类活动较敏感,以中度敏感区为主。对高、中、低度敏感区而言,人口密度每增长10、100、1000倍将相应导致RSEI均值降低0.2、0.4、0.6。经济廊带发展会导致人口密度增加,在规划布局过程中应控制人类活动,防止潜在敏感区及现有敏感区生态质量进一步恶化。     

不同栽培模式黄山药新根茎生长量的比较研究

本文研究了3种栽培模式(农业栽培模式、苹果园栽培模式和灌丛林带栽培模式)对黄山药新根茎生长量的影响,分析了3种模式的利弊和规模化发展黄山药的可能性,为多途径规模化发展黄山药提供了理论依据和技术范例。     

A bioclimatic classification of Chile: woodland communities in the temperate zone

The results of application of a global bioclimatic classification to Chile are presented. A total of 140 weather stations are assigned to bioclimatic belts on the basis of temperature and rainfall regime. In view of these assignements and of phytosociological data, a zonation of Chile into four major bioclimatic regions (Tropical, Mediterranean, Temperate and Boreal) is proposed. For the Temperate region, we discuss the distribution of the various climax forest communities with respect to bioclimatic belt. It is suggested that increased knowledge of the phytosociology of Chile will improve understanding of the climate of the different parts of the country.Nomenclature: Plant nomenclature follows Marticorena et al. (1985) for Chilean species.     

Fabrication and Operation of a Nano-Optical Conveyor Belt

The technique of using focused laser beams to trap and exert forces on small particles has enabled many pivotal discoveries in the nanoscale biological and physical sciences over the past few decades. The progress made in this field invites further study of even smaller systems and at a larger scale, with tools that could be distributed more easily and made more widely available. Unfortunately, the fundamental laws of diffraction limit the minimum size of the focal spot of a laser beam, which makes particles smaller than a half-wavelength in diameter hard to trap and generally prevents an operator from discriminating between particles which are closer together than one half-wavelength. This precludes the optical manipulation of many closely-spaced nanoparticles and limits the resolution of optical-mechanical systems. Furthermore, manipulation using focused beams requires beam-forming or steering optics, which can be very bulky and expensive. To address these limitations in the system scalability of conventional optical trapping our lab has devised an alternative technique which utilizes near-field optics to move particles across a chip. Instead of focusing laser beams in the far-field, the optical near field of plasmonic resonators produces the necessary local optical intensity enhancement to overcome the restrictions of diffraction and manipulate particles at higher resolution. Closely-spaced resonators produce strong optical traps which can be addressed to mediate the hand-off of particles from one to the next in a conveyor-belt-like fashion. Here, we describe how to design and produce a conveyor belt using a gold surface patterned with plasmonic C-shaped resonators and how to operate it with polarized laser light to achieve super-resolution nanoparticle manipulation and transport. The nano-optical conveyor belt chip can be produced using lithography techniques and easily packaged and distributed.     

天山和昆仑—秦岭造山带志留系、石炭系和三叠系复理石相遗迹化石

在天山志留系,石炭系和东昆仑－西秦岭三叠系浊积岩系中遗迹化石发育,经研究计有：Helminthopsis hieroglyphica,Neonerietes biserialis.,N,uniserialis,palaeophycus isp.,P.serratus,P.striatus.P.tubularis,Paleodictyon imperfectum,Phycodes circinnatum,Phycosiphon incertum,Planolites annularis,P.beverleyensis,P.Montanus,Rhizocorallium ips.,Scalarituba missourensis,Skolithos ips.,?Spirorhaphe isp.,sublorenzinia ips.Tambia isp.,Taphrhelminthopsis auricularis,Teichichnus isp.,Thalassinoides isp.它们构成4种遗迹化石组合：Phycosiphon-Palaeophycus组合,Neonereites-Scalarituba组合,Paleodictyon组合和Phycodes Skolithos组合,分别代表局限缺氧深海盆地浊流沉积,半深海环境中－上扇沉积,多岛洋环境的中－下扇沉积,半深海环境的中扇浊流沉积。     

基于SBE法的广东省生态景观林带美景度评价

采用美景度评价法(SBE法)对广东省生态景观林带进行评价，分析影响生态景观林带景观水平的主要因子，探讨生态景观林带景观构成要素与景观质量的关系。结果表明，不同专业、性别、学历、年龄的人群在森林审美态度上具有一致性，其评判结果能够反映森林美景度的实际情况；对53张照片评价SBE值，最大为1.4454，最小为-1.6917；对美景度影响较大的4个因子，即色彩丰富度(X6)、色泽明度(X7)、生活型(X8)、生长状况(X9)，建立的多元线性回归模型是 Y=1.902-0.346X6-0.461X7+ 0.206X8-0.584X9。     

新加坡·南京生态科技岛滨江风光带（大江侧）示范区景观设计

新加坡·南京生态科技岛滨江风光带（大江侧）示范区景观设计旨在通过广泛的生态种植、森林保护、湿地恢复和栖息地创造等措施,提升自然环境的韧性,同时顺应当地的气候变化。项目组在确保生态不受干扰的前提下,结合现状对部分开放空间节点进行了细致的规划和设计,并在视野开阔的场地设置滨江观景平台。该项目的建成,为场地生态基础设施的建立奠定良好的基础,全面保护、保育长江滨水沿线12km的野生动植物栖息地,提高生态多样性并改善城市生态