scholarly journals The Imprint of Built-Up Land Expansion on Cropland Distribution and Productivity in Shandong Province

Land ◽  
2021 ◽  
Vol 10 (6) ◽  
pp. 639
Author(s):  
Meng Wang ◽  
Qingchen Xu ◽  
Zemeng Fan ◽  
Xiaofang Sun
Keyword(s):  
Shandong Province ◽  
Sustainable Land Use ◽  
Potential Yield ◽  
Aggregation Index ◽  
Production Region ◽  
Self Sufficiency ◽  
Land Cover Data ◽  
Land Use Development ◽  
Patch Density ◽  
Two Stages

Grain self-sufficiency is a national food security target of China. The way that built-up land expansion impacts upon cropland loss and food provision needs to be explored in the major grain producing areas. Shandong Province is an important agricultural food production region, which is also experiencing rapidly urbanizing. Here we assessed the spatiotemporal distribution of cropland loss due to built-up land expansion and landscape dynamics of cropland during 2000–2020, by using 30 m resolution land cover data. We also analyzed the potential yield change influenced by cropland loss. The results showed that the area of built-up land expanded by 5199 km2 from 2000–2010, and 11,949 km2 from 2010–2020. Approximately 95% of the new built-up land was from cropland during the two stages, and the primary mode of built-up land expansion was the edge expansion. The patch density and the patch size of cropland kept increasing and decreasing, respectively, and the aggregation index kept decreasing from 2000 to 2020, indicating increased cropland fragmentation. The proportion of occupied cropland with potential yield greater than 7500 kg/ha was 25% and 37% during the former and the latter period. Thus, higher quality cropland was encroached in the recent period. The findings could provide meaningful implications for making sustainable land use development strategies in the study area and other similar regions.

scholarly journals Agriculture and Supporting Ecosystem Services: A Trade-off Analysis Using Open Data in Brazil

2019 ◽  
Vol 9 (1) ◽  
pp. 1
Author(s):  
Ana Paula Dias Turetta ◽  
Bruno Pedrosa ◽  
Luca Eufemia ◽  
Michelle Bonatti ◽  
Stefan Sieber
Keyword(s):  
Ecosystem Services ◽  
Service Provision ◽  
Agricultural Production ◽  
Methodological Approach ◽  
Regional Scale ◽  
Open Data ◽  
Sustainable Land Use ◽  
Production Region ◽  
Trade Offs ◽  
Agricultural Areas

Open data are important for adding legitimacy and transparency to public sciences. These data have also a potential to be used as a first approach for scientific investigation, such as spatial evaluation of ecosystem services. This paper presents a methodological approach to evaluate the trade-offs between agriculture and supporting ecosystem services based on spatial analysis and open data. The study area is an important agricultural production region in Bahia State, Brazil. The framework was able to establish the spatial interactions between agriculture and ecosystem service provision, while the regional scale was useful in supporting guidelines regarding sustainable land use for agricultural areas.

scholarly journals Relevance of the Cell Neighborhood Size in Landscape Metrics Evaluation and Free or Open Source Software Implementations

2019 ◽  
Vol 8 (12) ◽  
pp. 586
Author(s):  
Paolo Zatelli ◽  
Stefano Gobbi ◽  
Clara Tattoni ◽  
Maria Giulia Cantiani ◽  
Nicola La Porta ◽  
...  
Keyword(s):  
Open Source ◽  
Open Source Software ◽  
Landscape Metrics ◽  
Shape Index ◽  
Edge Density ◽  
Patch Area ◽  
Aggregation Index ◽  
Use Values ◽  
Software Implementations ◽  
Patch Density

Landscape metrics constitute one of the main tools for the study of the changes of the landscape and of the ecological structure of a region. The most popular software for landscape metrics evaluation is FRAGSTATS, which is free to use but does not have free or open source software (FOSS). Therefore, FOSS implementations, such as QGIS’s LecoS plugin and GRASS’ r.li modules suite, were developed. While metrics are defined in the same way, the “cell neighborhood” parameter, specifying the configuration of the moving window used for the analysis, is managed differently: FRAGSTATS can use values of 4 or 8 (8 is default), LecoS uses 8 and r.li 4. Tests were performed to evaluate the landscape metrics variability depending on the “cell neighborhood” values: some metrics, such as “edge density” and “landscape shape index”, do not change, other, for example “patch number”, “patch density”, and “mean patch area”, vary up to 100% for real maps and 500% for maps built to highlight this variation. A review of the scientific literature was carried out to check how often the value of the “cell neighborhood” parameter is explicitly declared. A method based on the “aggregation index” is proposed to estimate the effect of the uncertainty on the “cell neighborhood” parameter on landscape metrics for different maps.

scholarly journals Innovative Approaches, Tools and Visualization Techniques for Analysing Land Use Structures and Dynamics of Cities and Regions (Editorial)

2020 ◽  
Vol 4 (2) ◽  
Author(s):  
Robert Hecht ◽  
Martin Behnisch ◽  
Hendrik Herold
Keyword(s):  
Land Use ◽  
Spatial Scales ◽  
Sustainable Land Use ◽  
Individual Contributions ◽  
Planning Decision ◽  
Land Use Development ◽  
The Individual ◽  
Visualization Techniques ◽  
Development And Management ◽  
Innovative Approaches

AbstractGeospatial analysis and visualisation can be used to gain knowledge about land use structure and its changes on different spatial scales, which in turn is key to unlock the potential for sustainable land use development. This editorial provides a frame to a set of papers of the topical collection “Innovative approaches, tools and visualization techniques for analyzing land use structures and dynamics of cities and regions”, which was initiated in conjunction with the 2017 International Land Use Symposium taken place in Dresden, Germany. It first introduces current, urging land use, development and management challenges. Further on, the editorial presents the individual contributions and reflects their affiliation to the themes “Mapping and Monitoring Approaches” and “Planning, Decision Support and Participation”. Although the objectives, methods and underlying data used in the papers of this topical collection greatly vary, as pieces of a puzzle they contribute to a better analysis and understanding of current and future land use structures and dynamics of cities and regions.

scholarly journals Spatial simulation of population in Shandong Province based on night-time imagery and land cover data

2021 ◽  
Vol 293 ◽  
pp. 02015
Author(s):  
Keyi Yang ◽  
Yunling Li ◽  
Yang Liu
Keyword(s):  
Land Cover ◽  
Spatial Data ◽  
Stepwise Regression ◽  
Shandong Province ◽  
Good Precision ◽  
Night Time ◽  
Actual Distribution ◽  
Land Cover Data ◽  
Public Datasets ◽  
Better Than

Population spatial data can more truly express the actual distribution characteristics of the population, and provide data support for the regional environment and population development. Use Shandong Province as the research area, township-level census data, revised DMSP/OLS night-time data, and Globaland30 land cover data as data sources, partitions based on population agglomeration, and uses a stepwise regression method to build a population data spatial model. Use the model to simulate population density with a resolution of 100m. The experimental results show: Stepwise regression model good precision, the average relative error was 23.56%, and Root Mean Square Error, Mean Absolute Error are better than the other two public datasets. The simulation results are better than the two public datasets.

Special issue: Environmental risk mitigation for sustainable land use development

2020 ◽  
Vol 95 ◽  
pp. 104488
Author(s):  
Hossein Azadi ◽  
Dacinia Crina Petrescu ◽  
Ruxandra Malina Petrescu-Mag ◽  
Alexandru Ozunu
Keyword(s):  
Land Use ◽  
Environmental Risk ◽  
Risk Mitigation ◽  
Sustainable Land Use ◽  
Special Issue ◽  
Land Use Development

scholarly journals Spatial Pattern Evolution and Optimization of Urban System in the Yangtze River Economic Belt, China, Based on DMSP-OLS Night Light Data

2018 ◽  
Vol 10 (10) ◽  
pp. 3782 ◽  
Author(s):  
Yang Zhong ◽  
Aiwen Lin ◽  
Zhigao Zhou ◽  
Feiyan Chen
Keyword(s):  
Spatial Pattern ◽  
Urban Areas ◽  
Yangtze River ◽  
Mutual Influence ◽  
Urban System ◽  
The Yangtze River ◽  
Aggregation Index ◽  
Auxiliary Data ◽  
Economic Zone ◽  
Patch Density

It is of great significance to research the spatial pattern of the urban system of the Yangtze River economic belt to analyze the characteristics and laws of the spatial structure of the Yangtze River economic belt and to promote the optimal development of the urban system of the Yangtze River economic zone. In this paper, the time data of the Yangtze River economic zone are corrected using Landsat satellite data and the clustering analysis method. The threshold of the urban built area is obtained by comparing the auxiliary data with other auxiliary data. Based on this threshold, a total of eight typical landscape pattern indicators—including the total area of the landscape, the total patch number, and the aggregation index—are used, and then FRAG-STATS 4.2 software is used to analyze the spatial pattern of urban development in the Yangtze River economic zone from 1992 to 2013. The results show the following: (1) During the period from 1992 to 2013, the urbanization of the Yangtze River economic zone expanded rapidly; the area of urban built-up area increased by a factor of 9.68, the number of patches increased by a factor of 2.39, and the patch density increased greatly, indicating that the Yangtze River economic zone, with an increasing number of towns and urban areas, continues to expand. (2) The complexity of the landscape patch shape gradually increased, the small and medium-sized cities continued to grow, more small towns emerged, and the total length of the border and the average density had average annual growth rates of 21.56% and 21.58%; the degree of aggregation and the mutual influence are increasing. (3) The maximum plaque index and the aggregation index show an overall declining trend. However, there are some fluctuations and disorder in the process of evolution, such as the total area of the landscape, the total patch number and the total patch density, which reflects that the Yangtze River economic zone is in the process of urbanization and has irregular and disordered characteristics.

THE EVOLUTION OF THE FORMS OF SHANDONG PROVINCE'S STONE RELIEFS COMPOSITION OF THE HAN ERA

2021 ◽  
pp. 19-28
Author(s):  
Zhicheng Bi ◽  
◽  
Keyword(s):  
Image Transmission ◽  
Han Dynasty ◽  
Shandong Province ◽  
Chinese Society ◽  
Funerary Art ◽  
Western Han Dynasty ◽  
Starting Point ◽  
Art Forms ◽  
The One ◽  
Two Stages

The stone reliefs of the Han era (206 BC – 220 AD) are a special type of funerary art with its own specific set of plots and art forms. Shandong Province takes the first place in China in terms of number of founding relief images. The peculiarity of the compositional construction of the Han's reliefs is that it isn’t based on the spatial principle of image transmission, but on the plastic-planar pictorial principle of a two-dimensional composition, which, with its thoughtful use, can carry the maximum emotional charge [Moshkov, Kuznetsov 1994]. Based on that, author’s own typology of the compositions of Han reliefs was built. Article the object of the study are stone reliefs of the Han Dynasty, Shandong Province, represented on stone sarcophagi, in stone tombs, temples of ancestors and steles, and passed the past two stages of its heyday. The purpose and objective of the study is to identify and study the laws of evolution of the composition of the stone reliefs of the Han Dynasty, Shandong Province, based on V.M. Moshkova’s principles of composition, using systemic and iconological research methods. Images on the stone reliefs of the Han tombs are distinguished by the peculiarity of the forms of compositional constructions, the process of development and evolution of which occurs in accordance with certain laws. As a result of the study, it was revealed that the starting point for the development of relief compositions of stone sarcophagi were two forms – symmetrical and nested (including several levels following the outlines and forms of stone material), which during the heyday of the Western Han Dynasty supplemented the “V”-shaped composition. Their further development is associated with the use of dispersed, zoned, irregular composition techniques, which spread around in turn of the CE. At the same time, a variety of compositional forms is also observed in the reliefs of tombs, temples of ancestors and stelae, in the reliefs of which during the period of the Eastern Han (25–220 CE) many different forms of compositional organization appear: for example, asymmetric, segmented, shingles wrong etc. The composition of combinations of geometric shapes, consisting, as a rule, of squares and circles, is also distributed. A variety of compositional forms is associated, on the one hand, with the complication of the architecture of burial structures and an increase in their scale. On the other hand, with the enrichment of the content and plots of reliefs, which is becoming more diverse and includes not only the image of Confucian’s symbols, but also narratives that reflect episodes from the lives of those buried. This indicates not only the process of improving art forms during the Han era, but also reflects a certain evolution of religious and philosophical thought, changes that took place in this period in the social structure of ancient Chinese society, and also, possibly, some external influences on the development of Chinese art.

scholarly journals Sustainable land use in the Sudano-Sahelian zone of Mali: exploring economically viable options using multiple goal linear programming

1998 ◽  
Vol 46 (1) ◽  
pp. 109-122
Author(s):  
E.J. Bakker ◽  
H. Hengsdijk ◽  
K. Sissoko
Keyword(s):  
Land Use ◽  
Agricultural Sector ◽  
Production Systems ◽  
Animal Husbandry ◽  
Chemical Fertilizer ◽  
Sustainable Land Use ◽  
Pasture Production ◽  
Self Sufficiency ◽  
Ecologically Sustainable ◽  
Sahelian Zone

Technical options in crop and animal husbandry to reduce soil nutrient mining and other forms of natural resource degradation in the Sudano-Sahelian zone should be economically attractive, if they are to be adopted. A model is presented in which agronomic and economic information and goals are combined to explore possibilities for agro-ecologically sustainable and economically viable land use in three different climatic regions in Mali and for a situation of non-degraded soils. The time frame of the study is to the year 2010. For each region, an agro-ecologically sustainable land use system (a combination of crop, livestock and pasture production systems) that maximizes income of the agricultural sector and satisfies self sufficiency targets is identified. Special attention is given to the use of chemical fertilizer in crop activities. It is shown that use of chemical fertilizer is an important element of sustainable and economically viable land use, especially in higher rainfall regions. Population size has a marked effect on optimal land use systems in the regions, but self sufficiency is not endangered even if the population is 50% higher than estimated for 2010. It is argued that results should not be used to simulate the actual situation or future developments, but to define priorities for agricultural development in the Sudano-Sahelian region.

scholarly journals Recognizing Landscapes for the Purpose of Sustainable Development—Experiences from Poland

2019 ◽  
Vol 11 (12) ◽  
pp. 3429
Author(s):  
Iga Solecka ◽  
Dietmar Bothmer ◽  
Arkadiusz Głogowski
Keyword(s):  
Spatial Data ◽  
Multivariable Analysis ◽  
Landscape Management ◽  
Human Perception ◽  
Sustainable Land Use ◽  
Landscape Type ◽  
Landscape Unit ◽  
Land Cover Data ◽  
Landscape Units

Landscape identification forms a base for landscape management and sustainable land use policy. According to the European Landscape Convention, each Member State needs to recognize the landscapes as an essential component of people’s surroundings. Poland developed a method for landscape auditing that will be conducted for landscapes in the whole country. The identification of landscape units is based on landscape type characteristics and spatial data that is layered and analyzed in order to identify landscape units. In this paper, we aim to test the possibilities of automatic landscape identification. We take the assumptions designed for landscape identification for the needs of the audit. Based on the “Typology of Poland’s current landscapes”, we design a process to identify landscape units with the use of the aggregation of land cover data and multivariable analysis. We use tools in an ArcGIS environment to design a process that will support human perception. Our approach is compared with the approach presented in the method designed for a landscape audit in order to be used for landscape unit identification at the municipal level. The case study area is the municipality of Siechnice within the suburban area of the city of Wrocław, an example of a changing landscape under suburbanization pressure. We conclude that both approaches can support each other in the landscape identification process.

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