scholarly journals A Spatial and Temporal Analysis of Land Use Changes in Two Mountain Valleys: with and without Dam Reservoir (Polish Carpathians)

2017 ◽  
Vol 36 (1) ◽  
pp. 129-137 ◽  
Author(s):  
Łukasz Wiejaczka ◽  
Jan Romuald Olędzki ◽  
Anna Bucała-Hrabia ◽  
Małgorzata Kijowska-Strugała

Abstract This study analyzed the temporal and spatial changes in land use taking place in two adjacent river valleys, located within the Polish Carpathians. The land use in 1977 and 2009 was presented for selected areas. In one of the valleys, a dam has been operating since 1994 along with a retention reservoir, which is an additional factor influencing the direction and scale of the land use changes. An analysis using GIS techniques showed that the general directions of transformation in both valleys in the land use structure are similar but with different intensity. In studied valleys a decrease of area with agricultural land and gradual increase in the forested area have been observed. In the valley with the reservoir few more changes were noticed. The decrease of the forested area by 5.5% and farmland by 8.2% on the areas submerged by reservoir was observed. The strip fields pattern has been changed into more dispersed. The road network development was also observed, as well as the change of nature of residential/agricultural buildings into residential/recreational.

2021 ◽  
Vol 325 ◽  
pp. 07001
Author(s):  
Utia Kafafa ◽  
Rika Harini

The National Southern Cross Road Route well known as Jalan Jalur Lintas Selatan (JJLS) in Indonesia. The segment which crosses Bantul Regency has 16.65 km long. The development of JJLS will have various kinds of impacts on the community around the road infrastructure. This study wants to know how the impact of the development that saw from the spatial dynamics of land-use change. The study area is located in Poncosari, Gadingsari, Srigading, Tirtohargo, and Parangtritis Village. We process the data using the map overlay technique then analyze it with quantitative descriptive. The results of this study are the development of JJLS in Bantul Regency has not significantly affected the land-use changes. It is evident from the location of the land-use change which is far from the road and tends to be disheveled. The Land-use changes that occur do not form a specific pattern such as the pattern of conversion of agricultural land into non-agricultural land. The less significant changes in land use are caused by the condition of the JJLS which is not yet fully connected. Moreover, the status of land ownership around JJLS is Sultan Ground so a special permit is needed if the community wants to use the land.


Tunas Agraria ◽  
2020 ◽  
Vol 3 (3) ◽  
Author(s):  
Prawira Danu Reja ◽  
Rakhmat Riyadi ◽  
Mrs Mujiati

The land use changes cannot be avoided in the development process. There are many conflict of interest between the utilization and the spatial planning document (called as RTRW) on it. This condition occurred in Bogor City. This study aims to determine the magnitude, distribution, and pattern of spatial changes, as well as its suitability to the RTRW. By using descriptive quantitative research methods, it is concluded that the rapid development that occurs in the city of Bogor does not have major implications for the mismatch level between land use and the RTRW of Bogor City. By using the descriptive quantitative research method, it is concluded that the rapid development that occurs in the Bogor City does not have major implications for the mismatch level between the land use utilization and the RTRW of Bogor City. This is indicated from: (1) the high rate of conversion on agricultural land to non-agricultural; (2) 43.57% of the Bogor City area is experienced changes in land use utilization; (3) the value on rate of change is 645,395 ha / year; (4) the growth pattern is concentric and along the way; and (5) 62.76% of the area shows compliance with the RTRW


2007 ◽  
Vol 6 (1) ◽  
pp. 1-26 ◽  
Author(s):  
T. V. Ramachandra

Uttara Kannada is the only district in Karnataka, which has a forested area of about 80% and falls in the region of the Western Ghats. It is considered to be very resourceful in terms of abundant natural resources and constitutes an important district in Karnataka.The forest resources of the district are under pressure as a large portion of the forested area has been converted to non-forestry activities since independence owing to the increased demands from human and animal population resulting in the degradation of the forest ecosystem.This has led to poor productivity and regenerative capacity which is evident in the form of barren hill tops, etc. in Coastal taluks of Uttara Kannada , entailing regular monitoring of the forest resources very essential.The classification of forest is a prerequisite for managing forest resources.Geographical Information System (GIS),allows the spatial and temporal analysis of the features of interest, and helps in solving the problem of deforestation and associated environmental and ecological problems.Spatial and temporal tools such as GIS and remotely sensed data helps the planners and decision makers in evolving the sustainable strategies for management and conservation of natural resources. Uttara Kannada district was classified on the basis of the land-use using supervised hard classifiers.The land use categories identified were urban area, water bodies, agricultural land, forest cover, and waste land.Further classification was carried out on the basis of forest type. The types of forest categorized were semi-evergreen, evergreen, moist deciduous, dry deciduous, plantations and scrub, thorny and non-forested area. The identified classes were correlated with the ground data collected during field visits. The observed results were compared with the historic data and the changes in the forest cover were analyzed. From the assessment made it was clear that there has been a considerable degree of forest loss in certain areas of the district. It was also observed that plantations and social forests have increased drastically over the last fifteen years, and natural forests have declined.


Author(s):  
I Putu Anom Widiarsa ◽  
Gusti Ayu Made Suartika

This article aims at analyzing determining aspects that must be incorporated in to the process of developing a strategy to control land development. It converses this objective by taking the increasing rate of agricultural land conversion in Mangupura urban area, of Badung Regency-Bali, as its case study. The study was carried out using a qualitative approach. The findings demonstrate the driving factors behind such a conversion are classified into four categories, including social, economical, environmental and regulatory forces. Learning from the dynamic of land development of Mangupura area, the study subsequently comes out with a conclusion that for efficiency and success, the strategy to control land use changes has to embrace two basic aspects of: (i) identification and clarification of instruments to regulate spatial changes, and (ii) the allocation of agency/s assigned to carry out the controlling roles. It is further emphasized that attempts to rule spatial development should take both of the aforementioned determining forces and basic aspects influencing the success of the control strategy, into account. Keywords: conversion, agricultural land, land use control and strategy


Land ◽  
2021 ◽  
Vol 10 (6) ◽  
pp. 627
Author(s):  
Duong H. Nong ◽  
An T. Ngo ◽  
Hoa P. T. Nguyen ◽  
Thuy T. Nguyen ◽  
Lan T. Nguyen ◽  
...  

We analyzed the agricultural land-use changes in the coastal areas of Tien Hai district, Thai Binh province, in 2005, 2010, 2015, and 2020, using Landsat 5 and Landsat 8 data. We used the object-oriented classification method with the maximum likelihood algorithm to classify six types of land uses. The series of land-use maps we produced had an overall accuracy of more than 80%. We then conducted a spatial analysis of the 5-year land-use change using ArcGIS software. In addition, we surveyed 150 farm households using a structured questionnaire regarding the impacts of climate change on agricultural productivity and land uses, as well as farmers’ adaptation and responses. The results showed that from 2005 to 2020, cropland decreased, while aquaculture land and forest land increased. We observed that the most remarkable decreases were in the area of rice (485.58 ha), the area of perennial crops (109.7 ha), and the area of non-agricultural land (747.35 ha). The area of land used for aquaculture and forest increased by 566.88 ha and 772.60 ha, respectively. We found that the manifestations of climate change, such as extreme weather events, saltwater intrusion, drought, and floods, have had a profound impact on agricultural production and land uses in the district, especially for annual crops and aquaculture. The results provide useful information for state authorities to design land-management strategies and solutions that are economic and effective in adapting to climate change.


2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Vít Zelinka ◽  
Johana Zacharová ◽  
Jan Skaloš

AbstractThe term Sudetenland refers to large regions of the former Czechoslovakia that had been dominated by Germans. German population was expelled directly after the Second World War, between 1945 and 1947. Almost three million people left large areas in less than two years. This population change led to a break in the relationship between the people and the landscape. The aim of the study is to compare the trajectories of these changes in agricultural landscapes in lower and higher altitudes, both in depopulated areas and areas with preserved populations. This study included ten sites in the region of Northern Bohemia in Czechia (18,000 ha in total). Five of these sites represent depopulated areas, and the other five areas where populations remained preserved. Changes in the landscape were assessed through a bi-temporal analysis of land use change by using aerial photograph data from time hoirzons of 2018 and 1953. Land use changes from the 1950s to the present are corroborated in the studied depopulated and preserved areas mainly by the trajectory of agricultural land to forest. The results prove that both population displacement and landscape type are important factors that affect landscape changes, especially in agricultural landscapes.


2016 ◽  
Vol 80 ◽  
pp. 113-123 ◽  
Author(s):  
Nicolas Urruty ◽  
Tanguy Deveaud ◽  
Hervé Guyomard ◽  
Jean Boiffin

Land ◽  
2021 ◽  
Vol 10 (11) ◽  
pp. 1240
Author(s):  
Ming-Yun Chu ◽  
Wan-Yu Liu

As compared with conventional approaches for reducing carbon emissions, the strategies of reducing emissions from deforestations and forest degradation (REDD) can greatly reduce costs. Hence, the United Nations Framework Convention on Climate Change regards the REDD strategies as a crucial approach to mitigate climate change. To respond to climate change, Taiwan passed the Greenhouse Gas Reduction and Management Act to control the emissions of greenhouse gases. In 2021, the Taiwan government has announced that it will achieve the carbon neutrality target by 2050. Accordingly, starting with focusing on the carbon sink, the REDD strategies have been considered a recognized and feasible strategy in Taiwan. This study analyzed the net present value and carbon storage for various land-use types to estimate the carbon stock and opportunity cost of land-use changes. When the change of agricultural land to artificial forests generated carbon stock, the opportunity cost of carbon stock was negative. Contrarily, restoring artificial forests (which refer to a kind of forest that is formed through artificial planting, cultivation, and conservation) to agricultural land would generate carbon emissions, but create additional income. Since the opportunity cost of carbon storage needs to be lower than the carbon market price so that landlords have incentives to conduct REDD+, the outcomes of this study can provide a reference for the government to set an appropriate subsidy or price for carbon sinks. It is suggested that the government should offer sufficient incentives to reforest collapsed land, and implement interventions, promote carbon trading policies, or regulate the development of agricultural land so as to maintain artificial broadleaf forests for increased carbon storage.


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