Publish in OALib Journal

ISSN: 2333-9721

APC: Only $99


Any time

2019 ( 28 )

2018 ( 211 )

2017 ( 219 )

2016 ( 234 )

Custom range...

Search Results: 1 - 10 of 7438 matches for " landscape pattern "
All listed articles are free for downloading (OA Articles)
Page 1 /7438
Display every page Item
Study on Landscape Pattern Based on Landsat-8 in the Center of Chengdu City, China  [PDF]
Wei He, Youyou Huang, Xin Dong, Xianchun Yan, Dengfei Li
Journal of Environmental Protection (JEP) , 2016, DOI: 10.4236/jep.2016.77093

Study on landscape spatial pattern in the center of Chengdu City is based on the Landsat-8 image by using 3S technique and spatial pattern analysis software Fragstats 3.3. The results showed that there covered an area of 193.92 km2 in the center of Chengdu City. 55.24% of the total area was made up of buildings, covering an area of 107.12 km2, and the overall landscape of impervious ground-based. There were 22,666 patches; 29.67% of the patches were roads. The human interference of buildings, roads and green space was a maximum; fragmentation of the highest was green space. The fragmentation of overall urban landscape was high; the diversity was low; the value of Shannon’s diversity index was 0.63; the value of Shannon’s evenness index was 0.70. All kinds of landscape distribution were not balanced, and lack of connectivity. This research puts important reference for creating good urban landscape space and restoring the natural ecological environment in the western regions of China.

Geometric correlation of cultural landscape patterns and Prunus domestica L. species leaf
Jovi? Biljana,Tripkovi? Milo?,?u?akovi? Aleksandar
Glasnik ?umarskog Fakulteta , 2011, DOI: 10.2298/gsf1104029j
Abstract: This paper provides the basics for more detailed research on the structures of bionic forms of different plant species and their application in the domain of landscape planning. The aim of this type of research is to expand knowledge of landscape planning with a deeper understanding of different geometric relations present in the existing natural forms. The correlation between structures in nature and structures that are present in contemporary landscape architecture could be established by the congruence with the geometric models from landscape. This paper is focused solely on the geometry of natural forms. The Voronoi diagram was used in order to examine the similarities and to perform a comparative analysis of the Prunus domestica L. leaf geometry and the geometry of cultural landscapes of Central Serbia. The resulting Voronoi diagram shows the similarity based on closed fields, Voronoi cells, which correspond to the nervation of Prunus domestica L. leaf by form. Using the comparative analysis, the geometric interpretation of cultural landscape examples could be linked to the geometric structure of the most frequent fruit tree species.
Prediction of Landscape Pattern of Soft Sandstone Area (SSA) after Seabuckthorn Planting  [PDF]
Jianzhong Hu
American Journal of Plant Sciences (AJPS) , 2012, DOI: 10.4236/ajps.2012.31020
Abstract: As a pioneer plant in the gully slopes in the Soft Sandstone Area (SSA) for eco-economical consideration, ten years (1999-2008) planting of seabuckthorn has made 1642.83 km2, or 9.84%, of the total area of SSA change into seabuckthorn coverage. In SSA the landscape has been divided into 9 types, such as seabuckthorn, sand, water, settlement, bush, open vegetation, forest, grassland and unused land. Seabuckthorn type is separated from the bush type for estimating the role of seabuckthron planting. By means of the Markov model, the developing trends of every landscape types can be determined to support the seabuckthorn project which influences the landscape pattern deeply in SSA. The prediction shows that the optimism ratio of seabuckthorn in the future should be 10.21%, the open vegetation 32.25%, and the forest percentage under 10%, which is a very wise tactics to avoid the serious death of various vegetations in SSA to match the local arid eco-environment.
Analysis of Landscape Patterns and the Trend of Forest Resources in the Three Gorges Reservoir Area  [PDF]
Wei Wang, Ying Pu
Journal of Geoscience and Environment Protection (GEP) , 2018, DOI: 10.4236/gep.2018.65015
Abstract: In this paper, first, based on landscape ecology theories, we respectively selected indexes from 4 aspects, area, edge, shape, and density, of the landscape type to describe the status of forest landscape patterns, and we established the stability index of landscape pattern (LSBI). Then, based on geo-statistical theories, we divided the forest in the reservoir area into 3990 grids of 4 km × 4 km using network technology and employing ordinary Kriging modelling to make trend surface analyses of the forest resources in the reservoir area. Finally, based on statistics principles, we used sampling theory to systematically extract 227 samples to obtain 7 periods of remote-sensing data from 1990a to 2012a. Then, we classified and extracted the forest in the sampling area using remote sensing, and we analysed each result with an Autoregressive Integrated Moving Average Model (ARIMA) time-series model. The results indicated the following: 1) the landscape structure of the reservoir area was primarily needle-leaved forest, broad-leaved forest and bush forest, and the mixed stands and bamboo stands were secondary; 2) the difference of the forest landscape pattern stability in the reservoir area, in all directions, was not significant, but the southern region was slightly more stable; and 3) the stability of the forest landscape pattern in the reservoir area increased from 1990a to 2012a. It kept increasing until 2016a. This study provides a theoretical basis for the reasonable management and decisions about the forest resources in the Three Gorges Reservoir Area. Meanwhile, it also explores methods for relevant research and has practical significance.
The role of landscape pattern analysis in understanding concepts of land cover change


地理学报 , 2004,
Analyzing Landscape Change Through Landscape Structure Indices: Case of the City of Aydin, Turkey
Hayriye Esbah
Journal of Applied Sciences , 2009,
Abstract: This study analysis the spatial pattern change with regards to landscape connectivity in Aydin by using landscape structure indices and GIS technology. Rectified black and white aerial protographs from 1977 and pan sharpened Ikonos images from 2002 are used in the analysis. A set of class level landscape structure indices are employed: percentage of landscape; patch number; mean patch size; area weighted mean patch size; mean shape index and connectance index. The findings indicate a decrease in the proportion, patch number, mean patch size and connectance of the crop fields, fruit groves and natural areas and an increase of these attributes for open spaces, vacant lots and urban built up areas. The recommendations to improve the spatial structure in relation to landscape connectivity include: increasing the amount of natural patches by restoring the natural attributes of the open space patches; mitigating the conversion of open spaces to urban built up areas by allocating suitable areas as parks and open space corridors for a city wide ecological network; making agricultural patches as main components of the local and regional ecological networks; encouraging ecologically sound agricultural practices for an effective network structure; preserving riparian corridors and improving structure by applying ecologically sound design principles and encouraging finger-like development pattern to implement green wedges penetrating into the urban core areas.
Lack of Agreement on Fragmentation Metrics Blurs Correspondence between Fragmentation Experiments and Predicted Effects
Jan Bogaert
Ecology and Society , 2003,
Abstract: The direct correspondence between landscape fragmentation and its effects is still the subject of debate. Many widely accepted hypotheses are not supported by experiments. The issue of fragmentation measurement is addressed here. To predict the effects of fragmentation, it is essential to quantify the pattern of fragmentation. Despite the increased use of spatial analysis and available measures, experts have not yet reached an agreement on how to measure patterns of fragmented landscapes and, thus, unambiguous translation of experimental findings into conservation or management guidelines is hampered.
Boletín de Ciencias de la Tierra , 2008,
Abstract: landscape structure may be characterized using indexes to compare different ecosystems, identifying significant changes through time and relative landscape dynamics and pattern to ecological functions. the aim of this study was to determine landscape pattern changes over time in the porce ii hydroelectric (antioquia, colombia). we used aerial photographies from 1961 and 1999 and thematic maps generated from an ikonos satellite image from 2001. the landscape patterns were quantified by considering parameters of shape, composition and configuration. in general it was observed that during the past 40 years the shape and structure were conserved, but with an increase in the number of patches that implies a more complex landscape structure associated with vegetational changes. at the present time, the dominant land cover is medium height regrowth followed by low height regrowth, primary forest, and secondary forest being the last three the most complex in terms of their shapes. the most dispersed coverages were pasture and primary forest, but detailed study of individual cobertures it was observed that connectivity has increased over time.
Regional agricultural landscape pattern changes along the Yellow River in Henan Province from 1987 to 2002

LIANG Guofu,DING Shengyan,LI Zhiheng,

地理学报 , 2005,
Abstract: Agricultural landscape along the riparian zones is designated as important landscape components for partly controlling water quality, biodiversity, as well as for their aesthetic role in landscapes. Therefore, the change of agricultural landscape along the riparian zones is at the top of the agenda for many policy makers and landscape planners. As a basis for conservation management, sufficient information about landscape structure should be provided. In the present study, we reconstructed the former landscape structure and elucidated the changes in landscape patterns during a period of about 15 years. Two sets of maps were used: a landsat-5 TM image (1987) and landsat-7 ETM image (2002). The frequency index, landscape diversity index and landscape fragmentation index were calculated for analyses. The results showed that: (1) the areas of the irrigated land, river, forest and beach landscape classes presented a decreasing trend while the areas of landscape classes of pool, paddy fields, dry land and construction land increased. (2) Disturbed by human activity, landscape diversity index increased but landscape fragmentation index decreased. In short, Human activities have had important influences on agricultural landscape of the riparian zones along the Yellow River in Henan Province.
Peri-Urban Transformations in Agricultural Landscapes of Perugia, Italy  [PDF]
Marco Vizzari
Journal of Geographic Information System (JGIS) , 2011, DOI: 10.4236/jgis.2011.32011
Abstract: Urban fringes represent very complex landscapes because of their proximity and mutual dependency with cities and rural areas. These landscapes may be considered as transition entities characterized by fuzzy boundaries. An uncontrolled development of urban sprawl and land use changes in these areas may deter- mine negative impacts on all natural, economic and social components. Thus, urban fringes assume a key-role in modern landscape analysis, planning and management. Landscape analysis of these interfaces, as this study shows, can be effectively supported by GIS spatial modelling. The Settlement Density Index (SDI), developed through GIS spatial analysis techniques, expresses punctually the territorial gradients generated by the presence of settlements and allows the identification of the urban fringes in the two periods under invest-tigation. These areas are then characterized and analyzed quantitatively using detailed land use data. The comparison of the diachronic information highlights the transformations of peri-urban landscapes that appear mainly related to the modifications of spatial configuration of urban areas and to the changes of agricultural systems.
Page 1 /7438
Display every page Item

Copyright © 2008-2017 Open Access Library. All rights reserved.