scholarly journals Land-Use/Cover Change and Driving Mechanism on the West Bank of Lake Baikal from 2005 to 2015—A Case Study of Irkutsk City

2018 ◽  
Vol 10 (8) ◽  
pp. 2904 ◽  
Author(s):  
Zehong Li ◽  
Yang Ren ◽  
Jingnan Li ◽  
Yu Li ◽  
Pavel Rykov ◽  
...  

Lake Baikal is located on the southern tableland of East Siberian Russia. The west coast of the lake has vast forest resources and excellent ecological conditions, and this area and the Mongolian Plateau constitute an important ecological security barrier in northern China. Land-use/cover change is an important manifestation of regional human activities and ecosystem evolution. This paper uses Irkutsk city, a typical city on the West Bank of Lake Baikal, as a case study area. Based on three phases of Landsat remote-sensing image data, the land-use/cover change pattern and change process are analyzed and the natural factors and socioeconomic factors are combined to reveal driving forces through the partial least squares regression (PLSR) model. The results show the following: (1) From 2005 to 2015, construction land expanded, and forestland was converted into construction land and woodland. In addition, grass land, bare land, and cultivated land were converted into construction land, and the woodland area increased. The annual changes in land use from 2005 to 2010 were dramatic and then slowed down from 2010 to 2015. (2) The main reasons for the change in land-use types were urban expansion and nonagricultural development caused by population migration. The process of urbanization from external populations to urban agglomeration and the process of reverse urbanization from a central urban population to urban suburbs jointly expanded urban construction land area. As a result, forestland, grass land and bare land areas on the outskirts of cities were continuously reduced. After the disintegration of the Soviet Union, land privatization led to a decline in the farm economy, the emergence of agricultural land reclamation and urban expansion; in addition, the implementation of the “one-hectare land policy” intensified development in suburban areas, resulting in a reduction of forestland and grass land areas. The process of constructing the China-Mongolia-Russia Economic Corridor has intensified human activities in the region, and the prevention of drastic changes in land cover, coordination of human-land relations, and green development are necessary.

2020 ◽  
Vol 198 ◽  
pp. 04025
Author(s):  
Xiaolun Zhang ◽  
Yanyan Shao

Basin ecological environment and water quality are seriously threatened by development around the lake. The thesis intends to assess basin Land Use and land Cover Changes (here after abbreviated as LUCC) impact on water quality change in Xingyun Lake basin. To achieve this purpose, land use information was interpreted from six periods high-resolution images in the past 30 years, which were classified into seven land use types. The water quality data was obtained by investigation and collection. SPSS software was used to celebrate the correlation coefficient between water quality and LUCC. The results revealed that, in the study area construction land, transportation land and farm land were underwent an increase with the region development; grassland and bare land were gradually reduced, forest land had become fragmented. In addition, the water pollution index gradually increased since 2000, the water deteriorated significantly. Furthermore, there was a strong positive correlation between water pollution indicator and farmland, construction land and transportation land, which indicated that the deterioration of water quality may be the result of the combined effects of agriculture non-point source pollution, domestic and industrial pollution; there was a significant negative correlation between water pollution indicator and grassland and bare land, which indicated that permeable underlying mat had significant interception and absorption effects on pollutants.


BMC Ecology ◽  
2020 ◽  
Vol 20 (1) ◽  
Author(s):  
Yeneayehu Fenetahun ◽  
Wang Yong-dong ◽  
Yuan You ◽  
Xu Xinwen

Abstract Background The gradual conversion of rangelands into other land use types is one of the main challenges affecting the sustainable management of rangelands in Teltele. This study aimed to examine the changes, drivers, trends in land use and land cover (LULC), to determine the link between the Normalized Difference Vegetation Index (NDVI) and forage biomass and the associated impacts of forage biomass production dynamics on the Teltele rangelands in Southern Ethiopia. A Combination of remote sensing data, field interviews, discussion and observations data were used to examine the dynamics of LULC between 1992 and 2019 and forage biomass production. Results The result indicate that there is a marked increase in farm land (35.3%), bare land (13.8%) and shrub land (4.8%), while the reduction found in grass land (54.5%), wet land (69.3%) and forest land (10.5%). The larger change in land observed in both grassland and wetland part was observed during the period from 1995–2000 and 2015–2019, this is due to climate change impact (El-Niño) happened in Teltele rangeland during the year 1999 and 2016 respectively. The quantity of forage in different land use/cover types, grass land had the highest average amount of forage biomass of 2092.3 kg/ha, followed by wetland with 1231 kg/ha, forest land with 1191.3 kg/ha, shrub land with 180 kg/ha, agricultural land with 139.5 kg/ha and bare land with 58.1 kg/ha. Conclusions The significant linkage observed between NDVI and LULC change types (when a high NDVI value, the LULC changes also shows positive value or an increasing trend). In addition, NDVI value directly related to the greenness status of vegetation occurred on each LULC change types and its value directly linkage forage biomass production pattern with grassland land use types. 64.8% (grass land), 43.3% (agricultural land), 75.1% (forest land), 50.6% (shrub land), 80.5% (bare land) and 75.5% (wet land) more or higher dry biomass production in the wet season compared to the dry season.


2013 ◽  
Vol 2013 ◽  
pp. 1-12 ◽  
Author(s):  
Xinli Ke ◽  
Feng Wu ◽  
Caixue Ma

Urban land expansion plays an important role in climate change. It is significant to select a reasonable urban expansion pattern to mitigate the impact of urban land expansion on the regional climate in the rapid urbanization process. In this paper, taking Wuhan metropolitan as the case study area, and three urbanization patterns scenarios are designed to simulate spatial patterns of urban land expansion in the future using the Partitioned and Asynchronous Cellular Automata Model. Then, simulation results of land use are adjusted and inputted into WRF (Weather Research and Forecast) model to simulate regional climate change. The results show that: (1) warming effect is strongest under centralized urbanization while it is on the opposite under decentralized scenario; (2) the warming effect is stronger and wider in centralized urbanization scenario than in decentralized urbanization scenario; (3) the impact trends of urban land use expansion on precipitation are basically the same under different scenarios; (4) and spatial distribution of rainfall was more concentrated under centralized urbanization scenario, and there is a rainfall center of wider scope, greater intensity. Accordingly, it can be concluded that decentralized urbanization is a reasonable urbanization pattern to mitigate climate change in rapid urbanization period.


2020 ◽  
Vol 5 (1) ◽  
pp. 6
Author(s):  
Safridatul Audah ◽  
Mislina Mislina ◽  
Afdal Afdal ◽  
Muharratul Mina Rizky

Tapaktuan is a region of the west coast of Aceh which has high forest and biodiversity potential in Indonesia because most of this region is part of the Leuser Ecosystem which is known to have high biodiversity and needs to be preserved. land conversion is a big challenge for this region because of development and development activities as well as population growth. The purpose of this study is to identify land use using GPS devices. The method is by first grounding the field with GPS MAPS GARMIN type 60 CSx then the data is stored on the device. Next determine the position of the object points and then input using Mapsource software to be processed into ArcGIS. to obtain information in the field in the form of observations of land cover in the field and the coordinates. Based on the results of groundchek observations in the field as many as 299 points obtained 7 types of land cover in the field consisting of bodies of water, forests, plantations, dryland agriculture, vacant land, settlements, and shrubs. The coordinates were taken covering 15 villages in the Tapaktuan sub-district, South Aceh Regency.


Author(s):  
Ehab Mohiuddin Hashlamou ◽  

The current study aims to identify the extent to which the competitive advantage - the natural cosmetics sector - was achieved in light of the factors of the Porter model, and on the Hashlamoun cosmetics factory in the West Bank between 2018 and 2019. Where the study was formulated through the main question: What is the extent of achieving the competitive advantage - the natural cosmetics sector - in light of the factors of the Porter model, and on the Hashlamoun cosmetics factory in the West Bank? This question is divided into a set of sub-questions. In order for the study to achieve its goals according to the scientific methodology, a qualitative exploration method for secondary sources and data has been used to uncover criticism and support for Porter models through relevant books and references. Work has also been done on the descriptive analytical approach in the study to analyze the sector and case study through several tools, including the questionnaire It was prepared appropriately based on the main factors of the Porter model for analyzing the sector's attractiveness and other external factors, in order to collect the required data on (8) cosmetic companies natural, conduct interviews and take notes in a case study of a factory Hashlamoun p. For cosmetics, the study used descriptive and inferential methods, through the statistical analysis program (EXCEL ). The study reached a number of results, the most important of which are: Based on the Porter factors to analyze the sector and build a competitive advantage, the researcher showed when applying the model that the natural cosmetics sector has an average attractiveness to invest in it, and that the Hashlamoun Cosmetics Company for the industrial environment in the sector has a medium appeal to continue in it, but after applying the forces and modern factors to the sector Natural cosmetics turned out to be of low attractiveness and also the Hashlamoun Company for Cosmetics for its industrial environment is of high attractiveness. The Porter model assessment of the five powers of sector analysis with the researcher’s assessment is weak and not sufficient, because it is unable to give information and expected challenges to the market and the sector adequately and inappropriate for the current sectors and different markets for several reasons: the inconsistency of the conditions and assumptions that are required to apply the model to the sectors and modern markets, the sector The model was applied to in Palestine and it is one of the developing countries, which means the model is unable to deal with the analysis and understanding of the sectors and markets of developing countries. The organization under study is from the small organizations sector and the Porter model is not appropriate for this sector because it has structures organization and clear and depend on the manpower, expertise and skills while the model is based on clear organizational and divided structures is the basic value of the equipment, machinery and external resources, and the presence of factors, modern forces weighed heavily on the markets and sectors and their ability to build a competitive advantage, did not mention the five Porter powers model. It became clear to the researcher that the company is using a differentiation strategy to build a competitive advantage for it, but there are better and more modern strategies that are more suitable for modern markets, and this strategy used has many flaws. After discussing the results, the study concluded with a set of recommendations, the most important of which are: Establishing a committee representing companies in the natural cosmetics sector and caring for them, companies that want to invest in or are present in the sector to counter the intensity of competition by using information technology methods and taking advantage of globalization and the Internet to market and promote their products, also that Al-Hashlamoun Cosmetics Company adopts the new thought of total quality management, Reduce damage, arrange production activities and processes to save time and effort, and communicate between management and workers to solve problems, access the market quickly and on demand on time, and a hybrid modern strategy that integrates cost leadership with differentiation, and The companies use to analyze the market recent modern models for all factors and variables, and if Porter models are used to be just a simple look or a starting point and use other tools, also amend the Porter strategies and models to become appropriate for the modern economy and the variables and taking into account modern forces from the Internet and globalization and free trade, and adding factors On its models to accommodate the economy in developing countries and focus on the role and impact of government on sectors.


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