关于自然遗产的概念及其几个相关问题的探讨

讨论了自然遗产的概念,通过对自然遗产概念的讨论进一步分析了自然遗产的特征并对自然遗产进行了分类,最后对自然遗产与文化遗产、自然遗产与地质遗迹进行了辨析     

中国东部南北样带中南段典型植被类型NDVI变化分析

以IGBP第15条国际标准样带——中国东部南北样带中南段的植被为主要研究对象，对该区域应用NDVI(normalized difference vegetation index)数据进行植被类型划分，共划分为三大类35小类．在此基础上，选择6种不同气候区域典型的森林植被类型，对其NDVI变化进行分析，从而得出：NDVI随着纬度的降低变化逐渐减小；通过研究经向年内：NDVI变化，发现4月份研究区域南北：NDVI指数变化最明显；分析NDVI均值变化可知，从暖温带到北亚热带植被指数NDVI形成明显的阶跃，从而判定植被指数NDVI对短期气候变化具有明显的指示性，并发现通过植被指数NDVI的季节变化曲线，可以较为准确地判定森林、草原、农作物等大类型，图4表1参15。     

多位点酶电泳在黄芪根瘤菌分类中的应用

报导了分析根瘤菌各种多位点酶的电泳缓冲系统和染色方法，并对黄芪根瘤菌进行了分类研究，结果表明：采用多位点酶电泳图谱进行聚类可得到与数值分类基本一致的结果，证实这是一种行之有效、简便快速的分类方法．     

南岳珍稀濒危动物的调查研究

在南岳野生动物中,珍稀濒危动物共有28种,一级1种,即黄腹角雉TragopanCaboti;二级23种,其中哺乳类5种,鸟类15种,两栖类2种;中国生物多样性保护行动计划优先保护名录二级动物1种;中国优先保护动物中国特有种(A级)4种.本文主要介绍了它们的分类位置、形态特征和在我国的分布,根据南岳现有的资源状况,提出了保护措施与对策.     

厦门西海域表层沉积物中甾醇的模糊聚类分析

通过流动法技术研究了ＣｕＯ／γＡｌ２Ｏ３催化剂上添加Ｌａ２Ｏ３对ＣＯ和ＣＨ４的氧化活性．通过Ｏ２ＴＰＤＭＳ等技术研究了催化剂上表面氧脱附与表面氧恢复能力．结果表明，Ｌａ２Ｏ３的添加改善了ＣｕＯ／γＡｌ２Ｏ３催化剂对ＣＯ和ＣＨ４的氧化活性；Ｌａ２Ｏ３的添加促进了ＣｕＯ／γＡｌ２Ｏ３催化剂上表面氧的脱附和表面氧的恢复．     

风险评价在危险废物分级管理中的应用研究

危险废物是指列入国家危险废物名录或者根据国家规定的危险废物鉴别标准和鉴别方法认定的具有危险特性的废物.由于其特有的危害特性,如不进行适当的管理,将会对人类和环境造成潜在的威胁.风险评价是通过对目标的定量与定性分析进而确定发生潜在危险可能性及后果大小的预测技术.本文首次提出了以风险评价作为手段,对风险废物管理的各个环节进行评价进而对其分级管理的思想,并提出了建议性的危险废物风险分级管理步骤,为我国危险废物的管理提供参考.     

论环境参与权

环境参与权是公民享有的一项重要环境权利.它包括参与环境立法权、环境行政听证权、参与环境决策权和环境监督权,确立环境参与权具有重要意义,但我国现行立法很不完备,需要进一步完善.     

Watershed-Based Survey Designs

Watershed-based sampling design and assessment tools help serve the multiple goals for water quality monitoring required under the Clean Water Act, including assessment of regional conditions to meet Section 305(b), identification of impaired water bodies or watersheds to meet Section 303(d), and development of empirical relationships between causes or sources of impairment and biological responses. Creation of GIS databases for hydrography, hydrologically corrected digital elevation models, and hydrologic derivatives such as watershed boundaries and upstream–downstream topology of subcatchments would provide a consistent seamless nationwide framework for these designs. The elements of a watershed-based sample framework can be represented either as a continuous infinite set defined by points along a linear stream network, or as a discrete set of watershed polygons. Watershed-based designs can be developed with existing probabilistic survey methods, including the use of unequal probability weighting, stratification, and two-stage frames for sampling. Case studies for monitoring of Atlantic Coastal Plain streams, West Virginia wadeable streams, and coastal Oregon streams illustrate three different approaches for selecting sites for watershed-based survey designs.     

基于保护目标制定的湖泊流域入湖河流河段划分方法——以滇池流域为例

通过科学合理地划分河段实现栖息地分类管理是恢复流域生物完整性的重要内容之一.湖泊流域入湖河流空间尺度小、坡降大、生态学过程差异性显著的特点导致其河段类型复杂多样,与河流流域河段类型的大尺度特征具有明显区别,因此,河流流域河段划分指标及其方法不适用于湖泊流域,亟需发展以栖息地分类管理为目的的湖泊流域河段划分方法.本文通过回顾河流分类的概念、划分依据及划分方法的发展历程,明确了湖泊流域河段划分理论基础,提出了基于保护目标制定的湖泊流域河段划分方法,为恢复湖泊流域生物完整性提供了更为精细的管理单元.同时,以滇池流域为例,通过筛选与大型底栖动物敏感种群和濒危种群显著相关的环境因子,建立了由地貌类型、土地利用方式、河水来源、河道人工化情况及水体营养程度构成的指标划分体系;在实现各划分指标空间化的基础上,利用空间叠加聚类技术手段,将滇池流域入湖河流划分为9个河段类型,为滇池流域水生态系统健康恢复提供了科学依据.     

Integration of Optical and Microwave Remote Sensing Data for Agricultural Land Use Classification

An agricultural land use classification of Oltrepo' Pavese region (in Northern Italy) is performed through integration of remote sensing data from optical and radar sensors. The source of optical data was a Landsat-TM image acquired on April 1994, while the source of microwave data was a contemporaneous image of the new radar sensor SIR-C/X-SAR which was flown on-board the Space Shuttle during an experimental mission over the chosen test site. Then, they were combined through calculation of the principal components of the multidimensional data sets and a final classification was carried out and compared with the classifications obtained from optical and radar recordings separately. Results showed remarkable improvement in the classification accuracy of seedbeds and uncultivated fields with radar recordings and of herbaceous crop type with integrated data. Potential ability of a multi-sensor classification and limits of a single-temporal approach are discussed.