游客感知视角下城市绿地空间社会价值评估 与影响因素研究

城市绿地空间生态系统服务社会价值最容易被人类感 知和利用，对其量化评估与影响因素探究可为城市绿地空间优 化提供科学依据。现有研究较少考虑服务设施对游客感知城市 绿地社会价值的影响。因此，以武汉市东湖风景区为例，利用 SolVES模型将6类游客社会价值感知数据进行空间量化，并探 究自然资源环境要素和服务设施兴趣点密度对社会价值指数与 空间分布的影响。结果表明：游客对东湖风景区社会价值偏好为 文化价值＞娱乐价值＞美学价值＞生物多样性价值＞康体价值＞ 可持续价值；社会价值热点区域集中在听涛景区和磨山景区，且 大多分布在高程20~40m、坡度2°~6°、距离水体100m范围 内；在影响因素上，旅游景点设施和植被覆盖度对各类社会价值 影响的贡献值最大，且与社会价值呈正相关关系。     

Transference kinetics of Co in an aquatic-terrestrial ecosystem

The dynamics of transportation, accumulation, disappearance and distribution of ⁶⁰Co in a simulated aquatic-terrestrial ecosystem was studied by isotope-tracer technique. In the aquatic system, ⁶⁰Co was transported and transformed via depositing, coupling with ions and adsorption. The absorption resulted in the redistribution and accumulation of ⁶⁰Co in each compartment of the system. Specific activities of ⁶⁰Co in water started sharply and gently decreased. The sediment accumulated a large amount of ⁶⁰Co by adsorption and ion exchange. The hornwort (Ceralophyllum demersum) could also adsorb a large amount of ⁶⁰Co in a short time, because of its large specific surface area. Fish (Carassius auratus) and snail (Bellamya purificata) had a poor capacity of adsorbing ⁶⁰Co. The distribution of ⁶⁰Co in the fish was mainly in the viscera, and the amount of ⁶⁰Co in the snail flesh was greater than that in the shell. The amount of ⁶⁰Co in individual compartment in the system was changed with time. The highest specific activity of ⁶⁰Co in the bean of the terrestrial system remained in the root nodule.     

浅析我国生态工业园区的发展及对策

介绍了生态工业园区这一概念的由来，阐述了生态工业的环境标志和评价方法，并希望由此对我国城市总体规划与区域规划起到一点启迪。     

河流生态功能综合评价的层次决策分析方法

介绍了基于层次决策分析的河流生态功能综合评价方法,提出了在河流水文评估、物理化学评估、生物栖息地质量评估和生物评估4个单项评估的基础上,构建以河流生态功能综合指数为目标、4个单项因子为准则、5个等级标度为决策标准的层次递阶模型,应用模型进行了河流综合评价的两种情景分析。     

矿区生态承载力评价方法

矿区生态承载力是矿区生态系统抵御外界胁迫的素质,矿区生态承载力理论及评价方法研究是深入认识矿区复合生态系统的重要手段,也是建立矿区生态系统健康评价理论方法体系的基础性工作.在对矿区生态承载力概念、内涵探讨的基础上,从生态系统弹性力、资源环境承载力及生态系统压力三个方面对其进行了量化研究,并提出了评价矿区生态承载力的分级综合评价方法.     

碳中和背景下煤矿区土地生态系统碳源/汇研究进展及其减排对策

我国是煤炭生产大国和消费大国,梳理和总结国内外有关煤矿区土地生态系统碳源/汇研究,对于我国碳达峰和碳中和目标的实现具有重要意义。本文综述了矿区碳源/汇构成、损毁土地生态系统碳排放、复垦土地生态系统碳固存及矿区减排增汇途径。研究结果表明:矿区碳源包括植被破坏、土壤质地变化产生的碳损失和开采中化石能源使用产生的碳排放,碳汇主要来源于已复垦排土场;矿产资源开发由点—线—面—网逐渐向外扩展,碳排放量大小受经济发展水平、采矿强度、开采规模、开采方式、技术水平等影响;矿区碳固存一般经历4个阶段即原地貌未扰动阶段、开采扰动阶段、采矿后复垦阶段和平衡阶段,碳固存大小受植被类型、复垦措施、土壤理化性质、坡度等影响;矿区通过节约集约利用土地和及时有效的复垦,实现"低排放、高碳汇、高效益"的发展状态。针对煤矿区土地生态系统碳源/汇研究现状,提出未来矿区土地生态系统碳源/汇的研究重点,以期为我国减排增汇研究提供科学依据。     

城市生态文明建设视角下水土保持措施的应用

水土资源是国家经济发展与生态文明建设的重要支持。现阶段我国的水土保持中对城市生态文明建设的重视程度不足,存在诸多限制性因素。本文在城市生态文明建设的视角下,分析水土保持措施的应用。     

勘察设计行业互联网生态圈建设运营模式研究

本文以勘察设计行业为研究领域,提出了行业互联网生态圈建设运营模式。通过三大要素层梳理,以及大数据信息平台和整合垂直众协平台建设,完成了工程项目全生命周期的建设运营和行业的“互联网化”转型。     

Potential contribution of the forest sector to carbon sequestration in Finland

Although Finland's forest resources have been utilized intensively, the size of the total volume of the growing stock has increased since the mid-1960s, and hence increasing amounts of carbon have been sequestered by forests. The net sequestration by forests has also been substantial when compared with the CO₂ emissions resulting from energy generation and consumption based on fossil fuels and peat. It is also important, from the point of view of mitigating the effects of climate change, to assess how the sequestration capacity of forests may change under changing climatic conditions. This paper presents the results of a study assessing the development of the forest and wood-product carbon budget for Finland, based on regionally measured data, detailed dynamic models, and recent predictions concerning the changing climate. At the starting point for the simulation (1990), nearly 90% of the forest sector's carbon storage was found in the forest. Regular management transferred carbon from forests to wood products. Under the current climatic conditions, the simulated forest carbon storage increased 45% by the year 2100, and the wood-product storage by 320%, as a consequence of continuous production. Under changing climate conditions, the forest carbon storage increased, but started to decline when the temperature increase exceeded 2.5°C within 40 years.