景观生态学原理在产业园规划设计中的运用

针对探讨绿色科技园区规划的必要性,以郑州高新技术产业开发区的规划设计为例来探讨景观生态学原理在产业园规划设计中的应用,以期能对我国方兴未艾的产业园规划起到一点积极意义。     

Role of urban greenway systems in planning residential communities: a case study from Egypt

Greenways have long played a significant role in the development of urban and sub-urban areas. They help mitigate the loss of “natural” space, often have scenic qualities, provide for recreation, education, a sense of well-being, and preservation of the natural habitat. This article explores the concept, history and development of urban greenways. The article illustrates the concept of linked parks and urban greenways in structuring urban and sub-urban developments while suggesting a methodological blueprint for their implementation in the planning process. A case study of a sub-urban development west of the city of Cairo, Egypt is presented to demonstrate the role of urban greenway systems in planning residential communities. An in-depth investigation of the planning process, context, approach, and development concept is followed by an overview of the rationale and significance of the method. The objective of this article is thus two-fold. First, to illustrate the concept of urban greenway systems in structuring communities; and second, to suggest a model for the integration and proper application of the concept of linked parks and urban greenway systems in planning residential communities. In conclusion, the article identifies a step-by-step procedure for integrating natural, recreational and cultural greenways and corridors in planning future residential developments.     

Cultural heritage in suburban landscape planning: A case study in Southern Norway

In this study we ask how the planning process that coordinates the interests of various sectors on a municipal level affects the cultural heritage assets in suburban landscapes. Special attention is paid to the role the cultural heritage management sector plays in the overall planning processes that take place in such semi-urban regions.A case study is carried out in two suburban areas in Norway, Madla and Nannestad. The case-study design includes various methods; historical map overlay, visual methods, discourse analysis based on qualitative interviews and document studies. The case studies have been performed on two levels: a superior landscape analysis covering the total municipality, and a second and more detailed level.The results from this study show that the protection and caretaking of green interests in land-use planning is not necessarily a protection of cultural heritage interests. Cultural heritage is more to be seen as a derivate interest. Cultural heritage management seldom functions as a premise provider in municipal planning. The findings are discussed in conjunction with the need for comprehensive planning across administrative and disciplinary borders as cities grow into regions. There is also a need for the cultural heritage interests to play a stronger role in planning in order to obtain better preservation of the cultural monuments and landscapes.     

遂宁市安居区琼江河岸线景观与生态规划设计

针对现代人们热衷于城市河流景观改造设计的浪潮,分析了以往对待河流的方式,通过遂宁市安居区琼江河岸线景观与生态规划设计这个实例,探讨人们该以怎样的方式介入城市河流景观的规划与设计。     

The transformation of the agroforestry landscape in the nineteenth century: a case study in southern Quebec (Canada)

Although recent landscape changes have been extensively studied, we possess very little information about the nature and extent of changes before aerial photographs were available. To contribute to this knowledge, we propose to explore the information within the Canadian censuses of the nineteenth century, documentary sources still very underused in landscape dynamics studies. The importance of these data lies in the fact that information is provided at the scale of each lot between 1842 and 1871, and at the township scale for subsequent years (1881–1951). In this study, nominative data provided for a rural township (139 km²) located in southern Quebec were coupled with detailed information about geomorphologic features using GIS.The analyses indicated two main phenomena. First, characterization of global landscape dynamics revealed the extent and rapidity of change. The evolution of land-use shows an increase of about 40% in improved areas between 1842 and 1871. while cumulative data show improved areas occupying nearly 83% of the total areas in 1891. These results contrast with recent landscape dynamics (1958–1993) which display relatively minor changes. Second, at the landscape type scale as well as at the surface deposit scale, analysis of nominative data failed to show any clear relationship between landscape dynamics and the spatial entities considered, whereas recent land-use patterns are closely linked to surface deposits. Thus, constant fluctuation in the agroforestry landscape and the lack of influence of abiotic characteristics on land-use dynamics represent two specific characteristics of this nineteenth century landscape.     

Valley landscape management: the context of a 'river contract' in the Semois valley, Belgium

A trans-boundary and multi-disciplinary approach to the river contract project for the Semois valley in Wallonia (Belgium) is described that provided the opportunity for a landscape-scale focus during actions to restore the watercourses and the associated valley area. A trans-boundary landscape survey was carried out under the context of the Interreg III European programme. This resulted in the rediscovery of lost views and viewpoints within the landscape and in the implementation of actions leading to the opening up of the valley, which provided opportunities to re-establish lost landscape features, such as hay meadows. The gathering of many partners in the negotiation process of this project can be seen as an example of 'landscape democratization' or participative management of landscapes in a trans-boundary and trans-disciplinary context and as such this project is a concrete realization of the aims of the European Landscape Convention (ELC).     

Visual threshold carrying capacity (VTCC) in urban landscape management: A case study of Seoul, Korea

The deterioration of the landscape in downtown Seoul has resulted mainly from the cumulative effects of large-scale developments. This article presents the Visual Threshold Carrying Capacity (VTCC) approach for maintaining and enhancing the landscape quality of the area. VTCC can be generally defined as the visual standard by which the value and significance of landscapes can be maintained. Using GIS and computer graphics techniques, VTCCs in this study are analyzed in two main respects: (1) the visibility of landscape resources, and (2) street scale. Subsequently, areas for intensive landscape management can be identified based upon the VTCCs established. The VTCC approach presented in this article integrates visual considerations with the process of developmental decision-making and thereby establishes a visually sound framework for the formulation of development proposals. Further research however, should be conducted to test the transferability and applicability of this approach to other urban landscapes and their related problems.     

Evaluation of ornamental plant resources to urban biodiversity and cultural changing: A case study of residential landscapes in Trabzon city (Turkey)

The residential vegetation features in urban landscapes play an important role as indicators regarding urban biodiversity potential and cultural changing. They also include ornamental resources in the context to landscape appreciation for human environment. Therefore, this paper provides quantitative information on the distribution of plant species in urban residential landscape areas of Trabzon city (Turkey). In a total of 218 sampled areas, 274 plants species belonging to 70 families were surveyed with respect to residential use types of the city. The study results showed that among the species recorded in five residential type (traditional housing, detached housing, villa, apartment blocks and sites, mass housing for employees), non-native taxa frequency of a total species are much and dominantly represent residential landscape structure. Additionally, the species richness and diversity is positively related to new urban development areas. But, it was clearly determined that the vegetation structure has tended to ornamental purposes different from traditional residential gardens including fruit and other benefiting species. Consequently, it can be evidence that the residential vegetation is ornamental plant resources to urban biodiversity and that the distribution of the species in urban landscapes follows necessities of city and human quality.     

Comprehensive concept planning of urban greening based on ecological principles: a case study in Beijing, China

Greenspace is an important part of complex urban ecosystems and provides significant ecosystem services. It benefits urban communities environmentally, esthetically, recreationally and economically. Beijing Province is in north of China, and has a total area of 16,807.8 km² and a population of about 13.8 million. This paper aims to develop a comprehensive conceptual framework for urban greening of Beijing Province based on landscape ecological principles. It attempts to answer how to establish an urban greening plan at the regional, city and neighborhood levels to achieve long-term sustainability. At the regional level, a big natural and semi-natural forest area in the northwest and an ecological buffer belt in the southeast are planned to protect the environmental quality of Beijing and provide habitats for wildlife. At the city level, a green network system of green wedges, parks and green corridors has been proposed. This green network helps to limit future urban expansion, improve urban environmental quality and serve as habitats and migration routes for wildlife. At the neighborhood level, green extensions and connections of riverside greenway, road greenway, parks and vertical greening permeate into the built-up areas. They provide open space close to residential areas and offer places for recreation. This three-level green system constitutes an integrated ecological network for urban sustainable development of Beijing. For future development of Beijing, urban parks, forestry, agriculture, water and infrastructure should be planned and designed in an integrated way. After this greenspace plan is legislated and completely realized, Beijing will develop an interconnected and integrated network of urban greenspaces. It has the prospect of achieving the aim of “Green Olympic City 2008” and the long-term goal of developing Beijing towards an “Eco-City”.     

Cultural interactions among diverse ethnic groups in a frontier region of a mainstream culture:A case study of Thai Korat,Laotian,and Tai Yuan vernacular houses in the central Lamtakong watershed,Nakhon Ratchasima

This study aims to study the conditions for the architectural form of vernacular houses of Thai Korat,Laotian,and Tai Yuan ethnic groups living in the central Lamtakong watershed.Nineteen stilt houses with the age of fifty-three to one hundred years were incor-porated in the case study.Data were meticulously gathered through methods such as observa-tion,photography,surveying,architectural drawing,three-dimensional modeling,and interviews.The analysis,conducted within the frameworks of ethnic identity and cultural diffusion,involved morphological and comparative assessments.The findings showed that the houses in the present case study could maintain their ethnic identities as can be clearly seen in the space planning and the shapes of the houses passed down from generation to gen-eration.In addition,there was cultural acceptance among these ethnic groups through exchanging,adopting,and borrowing house construction techniques,in order to express the common traits in the larger social context in a friendly and smoother way.This phenomenon indicates that the co-existence in a multicultural society is the key that makes different ethnic groups be able to maintain their ethnic identity and live with the larger society in a friendly way.Hence,the cultural significance of stilt vernacular houses in the study area is embedded in the dynamic process of exchanging house construction techniques,fostering harmony within the broader social context.This preservation simultaneously safeguards the essential elements and key attributes of ethnic identity in architecture.     

Remote sensing and GIS in modeling visual landscape change: a case study of the northwestern arid coast of Egypt

Land use planners in many countries have recognized the importance of the aesthetic values of landscape. Their desire to incorporate these values into decision-making processes has created a need to identify valid ways to quantify the scenic characteristics of landscapes. This has led to an increasing interest in the use of spatial data and geographic information systems (GIS) methodology in assessing visual attributes of the landscape. The objective of the present study is to assess the visual changes in a rapidly developing coastal area of Egypt using remotely sensed data (satellite images and aerial photographs) and raster GIS modeling. The analysis assesses changes between a period characterized by a vernacular, relatively natural landscape (1950s) and the beginning of the exploitation of the region for resorts (1990s). Using land use/land cover classes extracted from the satellite images and aerial photographs, four visual attributes of landscape are identified: land use/land cover diversity, activity (degree of naturalness), proximity to the shoreline, and topographic variety. A composite index is also developed. Although these attributes and the composite index rely mostly on the type of land use/land cover information on the landscape under consideration, the adopted techniques succeed in detecting several changes in the attributes, spatially locating them and mapping the magnitude of their changes. This study demonstrates what can be done to analyze and assess what is usually considered an incommensurable resource, the visual attributes of landscapes. It also reveals the extent of the impact of unplanned or ill-planned activities on one of the fragile resources of arid landscapes.     

Woodlots in the rural landscape: landowner motivations and management attitudes in a Michigan (USA) case study

Woodlots provide important environmental benefits in the Midwestern (USA) landscape, where they are undergoing rapid change. An increasingly diverse farm and non-farm population owns these non-industrial private forests (NIPFs). It is essential to understand what motivates NIPF landowners to retain and manage their forests. We describe a study of NIPF owners in an agricultural watershed where forest cover is increasing. What motivations and management practices might be contributing to this increase? The results of a survey of 112 NIPF owners suggest that aesthetic appreciation is the strongest motivator for retaining woodlots, especially by non-farmers. Protecting the environment also seems to be important for both farmers and non-farmers, while economic motivations are significantly less important. Landowners indicated that they are primarily taking a “hands-off” approach to management. This study provides insights for those interested in understanding NIPF landowners’ motivations and for developing effective programs.     

A GIS-based multi-criteria decision making approach to forest conservation planning at a landscape scale: a case study in the Kinabalu Area, Sabah, Malaysia

This paper presents a geographic information system (GIS)-based multi-criteria decision making approach for forest conservation planning at a landscape scale. This approach enables decision makers to evaluate the relative priorities of conserving forest areas based on a set of preferences, criteria and indicators for the area. Compromise programming techniques are used to integrate the forest conservation priority maps of decision groups where a separation distance is calculated. A clustering analysis was applied to identify potential conservation areas as the basis of delineating potential new protected areas. The study was conducted in the Kinabalu area, Sabah, Malaysia where two polygons neighboring the Kinabalu Park were delineated. A group of 11 polygons totaling 2050 ha has also been detected in the western part of Kinabalu Park. The study recommends the inclusion of a forest polygon (359 ha) neighboring Kinabalu Park and another (4361 ha) to the west of the park as new protected areas. A green corridor linking the potential new protected areas and Kinabalu Park should also be constructed to facilitate animal movement and interaction. This study reveals that riparian vegetation is an important aspect to forest conservation and the legislation to protect riparian zones should be strengthened.     

Interaction between farming systems, riparian zones, and landscape patterns: a case study in western France

We analyze the factors driving land use within and outside riparian zones in four small (about 800 ha) watersheds in Brittany. The results show a difference between riparian and non-riparian zones (less used for grassland), but other factors are also important, such as field size or farm management type. In large farms, small fields are easily abandoned. A multivariate analysis with farm and field characteristics explains 30% of land use variation. Our results suggest that farm type deflects land use from the regional mode, so it is important, in the implementation of environmental zoning, to assess constraints at the farm level.     

Assessment of nutrients using multivariate statistical techniques in estuarine systems and its management implications: a case study from Cochin Estuary,India

The status of nutrients in Cochin Estuary in relation with other physico-chemical variables was assessed using monthly data from seven locations for a period of 3 years. Seasonal comparative assessments were made and the probable sources of nutrients were modelled using principal component analysis (PCA). The results pointed out that the nutrients have higher concentration in premonsoon season compared with other seasons. The correlation coefficients of nutrients pointed out that strong correlation exists indicating that their source of origin could be same. Factor analysis extracted three principal components (PCs) in which the first component attributed to run-off, the second to influx of marine water and the third to intensive human activities. The proposed statistical model based on PCA gave a reasonable explanation on relation between physico-chemical parameters and environmental factors which have far reaching implications in the management of water systems.     

Municipal solid waste management and practices in coastal cities of the Eastern Black Sea: a case study of Trabzon City, NE Turkey

Each day some 400–450 ton solid waste is dumped on land and in the sea and rivers in the coastal cities of the eastern Black Sea, creating serious environmental problems. The paper reports the engineering geological studies of a proposed landfill site for Trabzon, a major city in the region. Fieldwork included scan-line and seismic surveys as well as boreholes and in-situ testing. Water absorption tests indicated permeabilities in the order of 10⁻⁸ m/s.      

Evaluation of performance of Active,Beautiful and Clean (ABC) on stormwater runoff management using MIKE URBAN: a case study in a residential estate in Singapore

ABSTRACT

Singapore has adopted a low impact development equivalent of stormwater management philosophy under a national program called ‘Active, Beautiful and Clean’ (ABC) employing soft-engineering techniques to manage rainfall runoff in the face of climate change and rapid urbanisation. This study makes use of the MIKE URBAN modelling tool to evaluate the performance of ABC units in a new residential precinct based on flow data collected. Calibration results show an overall good fit between the measured data and simulated results based on three goodness-of-fit stats. The runoff factors computed for scenarios with and without the presence of ABC units show an improvement in the range of 21–72%. This study demonstrates the usefulness of using a calibrated model to evaluate the performance of constructed units using measurements. It is recommended that this modelling tool be also used for evaluating water quality performance of the units as well as applying it for use in the planning and implementation process.