Research on Mangrove Canopy Spectral Reflectance Characteristics & The Classification of MangroveSpecies by Remote Sensing

遥感技术是近年来发展起来的对红树林生态监测的关键技术。本文以福建九龙江口红树林的自然保护区部分地区为研究区域，探讨了利用遥感技术进行红树植被分类的流程和方法。在总结归纳了红树林生态监测中的卫星遥感技术方法后，针对红树植被遥感分类方法普遍存在对图像要求较高而分类精度差等问题，首先进行大量野外实地调查和严格的实测光谱分析，探讨基于SPOT-5和LandsatTM卫星遥感影像融合，并借助全球定位系统（GPS）定位仪实地定位精确选择训练区，同时通过研究不同红树植物种类光谱间波段特征差异，构造新的波段变量，采用多步骤分类方法，对研究区域的3种红树林植物种类进行图像分类。 主要研究内容如下： （1）以...The remote sense is the key technique for the mangrove zoology monitoring. The widely accepted remote sensing method for classification of mangrove usually requires high quality images, and a training area which is difficult to find. This study particularly recites the application development of remote sensing in mangrove environment search, then this study aims to develop a more applicable method...学位：工学硕士院系专业：海洋与环境学院环境科学与工程系_环境工程学号：20033404

Research on Mangrove Canopy Apparent Spectral Reflectance Characteristics

结合使用野外便携式光谱仪对九龙江口红树林保护区白骨壤、秋茄、桐花树3种红树植物的叶冠表观光谱的测量结果,系统分析比较了红树植物叶冠反射光谱特征及其差异;并在一个潮间带底质遥感信息处理平台上对研究地点进行基于表观光谱特征的白骨壤和秋茄的SPOT卫星遥感图像分类;最后讨论了红树光谱研究中存在的问题。This article describes canopy apparent spectral reflectance of three mangrove species at Jiulong River estuary reserve using a portable hyperspectrometer,using the spectral data collected in fields to analyze mangrove canopy spectral reflectance characteristics and to compare their differences,the mangrove species distribution classified by using a tideland remote sensing information discrimination software based on SPOT satellite remote sensing images,and the disadvantage of mangrove spectral reflectance in higher research is discussed.国家自然科学基金项目(40276036);; 教育部博士点专项基金项目(2000038401)资

The Development of Application of Satellite Remote-Sensing in Mangrove Environment search

遥感技术是红树林生态监测中的关键技术。详细介绍了卫星遥感数据在红树林生态监测中的应用,叙述了人工目视解译、波段组合法、图像分类技术和模式分类等信息识别方法在探测红树林的生态学指标包括面积、分布范围、类内区分和类外区分以及动态变化等的应用和精度对比情况。此外,阐述了全球定位系统、地理信息系统和遥感技术在红树林生态监测中的综合应用的优势以及红树林遥感技术的发展前景。The remote sense is the key technique for the mangrove zoology monitoring.This article particularly presents the satellite remote-sensing data in the mangrove ecology monitoring.The discussion of the usage and accuracy of some methods including visual interpretation,wave band combination,image classification and model classification in the detection of area,scope,classification of inner and outer mangrove,dynamic change were made.Besides,the synthetical uses of GPS,GIS and RS,and the respective of mangrove remote sensing are recited also.国家自然科学基金项目(40276036);; 教育部博士点专项基金项目(2000038401

《诗筏》《骚筏》中美学思想初探

贺贻孙在《诗筏》、《骚筏》中的美学思想，由本体创作论、文本鉴赏论和学诗价值三方面构成，揭示了诗歌创作、鉴赏的艺术规律和价值取向，具有一定的积极意义。由于受到中国古典传统诗话模式的限制，缺乏严密的逻辑构架和系统的论证，并在儒家的温柔敦厚诗教的旗帜下，推崇自然，尊重性灵，带有折衷主义痕迹。不过，他能汇同于当时反复古的潮流，代表了一种短暂沉暮的开新，在促进封建文化进一步烂熟中发挥了一定的作用

甲烷氧化偶联催化剂和部分氧化反应机理的原位及非原位谱学表征

采用原位红外和原位显微 Raman光谱技术及 XPS、吡啶 (Py)吸附的漫反射 UV谱、Py-TPD、CO2 - TPD等方法对含氟稀土基催化剂上甲烷氧化偶联 (OCM)反应活性氧物种、催化剂表面酸碱性进行了考察 .在 O2 预处理和 /或工作条件下的 Sr F2 / L a2 O3 ,Sr F2 / Nd2 O3 ,L a OF,Ba F2 / L a OF和 Ba F2 / Ce O2 等催化剂上原位观测到超氧物种 (O-2 ) ,并在其中前 4种催化剂上检测到 O-2 物种与CH4 反应生成的气相 C2 H4 ,CO2 和表面碳酸盐等 OCM反应主、副产物 .这些结果为 O-2 是相应催化剂上 OCM反应的活性氧物种首次提供了直接的光谱证据 .研究结果还表明 ,催化剂的 OCM反应性能与其表面酸碱性的强弱并无简单的对应关系 .采用原位时间分辨红外光谱和原位显微 Raman光谱技术对 Si O2 和γ- Al2 O3 负载的 Rh、Ru催化剂上甲烷部分氧化 (POM)制合成气反应的研究表明 ,由 CH4 直接氧化生成 CO和 H2 是 Rh/ Si O2 上 POM反应的主要途径 ,而燃烧 -重整机理是 Ru/ γ-Al2 O3 和 Ru/ Si O2 上 CO和 H2 生成的主要途径 ,反应条件下催化剂表面氧 (O2 -)物种浓度的差异很可能是导致这两种催化剂体系上 POM反应机理不同的主要原因 ,其本质可能源于 Rh和 Ru对氧的亲合力的不同

Rh/SiO_2和Rh/NaY催化剂上合成气反应的高压原位红外光谱研究

采用高压原位FT -IR技术 ,对比研究了CO加H2 反应条件下Rh/SiO2 和Rh/NaY催化剂表面反应中间物种 .在Rh/SiO2 表面上 ,无论在常压还是在 1.0MPa合成气中 ,只观察到线式和桥式吸附CO .而在常压合成气中 ,Rh/NaY上不仅存在上述CO吸附物种 ,而且还有孪生型的Rh(I) (CO) 2 和少量Rh6 (CO) 16 ;当合成气压力升至 1.0MPa后 ,Rh(I) (CO) 2 迅速转化成Rh6 (CO) 16 和在 2 0 42cm-1产生吸收的单核羰基Rh物种 ,与此同时催化剂表面还生成了单齿和双齿乙酸根物种 ;这些在高压下生成的物种在合成气压力重新降回到常压时依然稳定存在 .研究Rh/NaY上合成气反应表面物种与H2 的反应行为表明单齿乙酸根很可能是反应的活性中间物 .这些结果说明Rh/NaY催化剂在高压合成气中的重构是诱发选择生成乙酸反应的基

Studies on the cultivation of all-female in Mugil cephalus

研究了性腺未分化年幼鲻鱼 ,通过口服不同剂量的 17β -雌二醇控制其雌性化。研究结果表明 ,高剂量组被诱导为全雌鲻鱼 ,低剂量组雌性率达 90 % ,而对照组则为雄鱼。雌性性分化早于雄性。 17β -雌二醇在肌肉和胃肠道残留量低 ,残留时间短The paper was to investigate the control of sexual differentiation by oral administration of varying doses of 17β estradiol(E 2) in juvenile grey mullet, Mugil cephalus with sexual undifferentiation. The results indicated that the grey mullets in the high dosage group were induced to be all female, and 90% of the juvenile grey mullets in the low dosage group differentiated into female. The control group differentiated into all males. Sexual differentiation into females occured significantly earlier than in males. The residue level and residue time of 17β estradiol were low and short in the muscle and gut of grey mullets.福建省重中之重资助项目 (全雌鲻鱼培育的研究

In situ Time-resolved FTIR and Raman Characterizations of the Partial Oxidation of Methane to Synthesis Gas over Ir/SiO_2 Catalyst

[中文文摘]采用原位时间分辨红外光谱和原位显微Raman光谱技术对Ir/SiO2 上甲烷部分氧化 (POM)制合成气反应的初级产物和反应条件下催化剂表面物种进行了跟踪考察 ,实验结果表明 ,在H2 预还原的新鲜Ir/SiO2 表面 ,CO是V(CH4)∶V(O2 )∶V(Ar) =2∶1∶45混合气反应的初级产物 ,因而甲烷的直接氧化过程是CO生成的主要途径 ;而在稳态反应条件下 ,CO生成的途径可能主要来自CO2 和H2 O与催化剂表面积碳物种 (CHx)和 /或CH4的反应 .催化剂上生成的积碳可能是导致稳态条件下Ir/SiO2 上POM反应机理不同于H2 预还原的新鲜催化剂的主要原因。[英文文摘]In situ time-resolved FTIR and in situ microprobe Raman spectroscopies were used to follow the primary products as well as the surface and gas phase species formed during the reaction of partial oxidation of methane (POM) to synthesis gas over Ir/SiO 2 catalyst. The results suggested that direct oxidation of CH 4 to CO is the dominant pathway of POM reaction over the freshly reduced Ir/SiO 2 catalyst, while the dominant schemes of CO formation over the catalyst under the steady state reaction condition are probably via the reactions of CO2 and H2O with the deposited carbon species (CHx) and/ or CH4 . The mechanistic difference between the POMto synthesis gas over freshly reduced Ir/ SiO2 catalyst and the catalyst under the steady state reaction may have resulted from the formation of significant amount of deposited carbon species in the latter system.国家重点基础研究发展规划 (No.G1999022408); 国家自然科学基金(No.20021002)资助项目

In-situ FT-IR study of high pressure syngas conversion over Rh/SiO2 and Rh/NaY catalysts

High pressure syngas [V(CO) : V(H-2) = 1] conversion over unpromoted Rh catalyst supported on silica and zeolite NaY were studied at 250 degreesC with an in-situ. IR cell that avoided contamination of iron carbonyls. Change of the syngas pressure produced no effect on the IR spectrum of Rh/SiO2; bridged and linear CO on Rh clusters were the only detectable surface species under 0.1 to 1.0 MPa of flowing syngas. In addition to the bridged and linear CO species, two types of dicarbonyls [Rh(I)(CO)(2)] and a small amount of Rh-6(CO)(16) were formed when Rh/NaY was exposed to 0.1 MPa syngas. Increasing of the syngas pressure to 1. 0 MPa over Rh/NaY resulted in transformation of the dicarbonyls to Rh-6(CO)(16) and probably a mononuclear medium carbonyl featuring an absorption 2042 cm(-1). The detectable reaction products adsorbed on Rh/NaY catalyst under 1.0 MPa were monodentate and bidentate acetates. These surface species were maintained even after releasing the syngas pressure back to 0.1 MPa. Thus, a remarkable difference exists in the effect of syngas pressure on the strtucture of Rh catalysts: reconstruction of Rh catalyst under high pressure of syngas occurs in zeolite NaY but not on silica. Reactivity of the adsorbed surface species toward hydrogen after the catalyst reconstruction suggests that the monodentate acetate groups are responsible for the selective formation of acetic acid from syngas over the Rh/NaY catalyst

Application of "6S" in the Management of Basic Chemistry Teaching Laboratory

主要介绍“6S管理”在厦门大学基础化学教学实验室内部细化管理过程中的应用实践与效果,特别是实验环境、物品定位管理、试剂管理、仪器管理等方面的具体做法,为高校化学教学实验室的建设和有效管理提供适应面广、操作性强的可借鉴经验。2016年度教育部“基础学科拔尖学生培养试验计划”研究课题;福建省高等学校教学改革研究项目(JAS14634);国家基础科学人才培养基金项目(J1310024