scholarly journals Spatial dynamics of agricultural land in Banyuasin Regency, South Sumatera: Its opportunities and threats

2020 ◽  
Vol 211 ◽  
pp. 04003
Author(s):  
Intan Pujawati ◽  
Ellen Suryanegara ◽  
Munawaroh ◽  
Aninda W. Rudiastuti
Keyword(s):  
Land Cover ◽  
Agricultural Land ◽  
Spatial Dynamics ◽  
Paddy Fields ◽  
Cost Ratio ◽  
Inhibiting Factor ◽  
Average Production ◽  
Paddy Land ◽  
Political Economic ◽  
National Food Security

The availability of agricultural land, especially paddy fields, is an inseparable part of efforts to maintain national food security and engage SDGs’ second goal. Changes in land cover/land use can occur due to social, political, economic, cultural, natural, and technological factors. Geographic Information Systems (GIS) operate as a tool to comprehend the changes related to the driver’s factors. The purpose of this study was to examine the spatial dynamics of paddy land cover in the Banyuasin Regency for more than 2 decades using the Markov Chain approach and to analyze the inhibiting and supporting factors in developing paddy farming in the region. The inhibiting factor discussed in this study is the potentiality of floods in paddy fields. The results showed that paddy fields in Banyuasin Regency experienced the widest decrease of 2,863.80 hectares and encountered the largest increase of 14,463.45 hectares in 1990-2003. The threat factor also influenced changes in the area of agricultural land in the form of inundation. The flood inundation crisis peaked in 2010, where 832.58 hectares out of 164,562.37 hectares of paddy field were flooded. However, the potency in developing lowland rice farming on swamps in Banyuasin Regency is considerably beneficial. This can be examined from the value of Revenue-Cost Ratio (R/C Ratio), averaging 3.65, and BenefitCost Ratio (B/C Ratio) of 2.65 with an average production of 5-7 tons/hectares/season.

scholarly journals Spatial dynamics model of land use and land cover changes: A comparison of CA, ANN, and ANN-CA

2021 ◽  
Vol 8 (1) ◽  
pp. 38
Author(s):  
Moh. Dede ◽  
Chay Asdak ◽  
Iwan Setiawan
Keyword(s):  
Land Use ◽  
Land Cover ◽  
Agricultural Land ◽  
Spatial Dynamics ◽  
Influential Factors ◽  
Lulc Changes ◽  
Compact Development ◽  
Average Probability ◽  
Artificial Neural Network Ann ◽  
Area Expansion

Land use and land cover (LULC) changes through built-up area expansion always increases linearly with land demand as a consequence of population growth and urbanization. Cirebon City is a center for Ciayumajakuning Region that continues to grow and exceeds its administrative boundaries. This phenomenon has led to peri-urban regions which show urban and rural interactions. This study aims to analyze (1) the dynamics of LULC changes using cellular automata (CA), artificial neural network (ANN), and ANN-CA; (2) the influential factors (drivers); and (3) change probability in the period 2030 and 2045 for Cirebon’s peri-urban. We used logistic regression as quantitative approach to analyze the interaction of drivers and LULC changes. The LULC data derived from Landsat series satellite imagery in 1999-2009 and 2009-2019, validation of dynamic spatial model refers to 100 LULC samples. This research shows that LULC changes are dominated by built-up area expansion which causes plantations and agricultural land to decrease. The drivers have a simultaneous effect on LULC changes with r-square of 0.43, where land slope, distance from existing built-up area, distance from CBD, and accessibility are significant triggers. LULC simulation of CA algorithm is the best model than ANN and ANN-CA based on overall accuracy and overall accuracy (0.96, 0.75, 0.73 and 0.95, 0.66, 0.66 respectively), it reveals urban sprawl through the ribbon and compact development. The average probability of built-up area expansion is 0.18 (2030) and 0.19 (2045). If there is no intervention in spatial planning, this phenomenon will decrease productive agricultural lands in Cirebon's peri-urban.

scholarly journals The Conversion of Rice Field Functions in North Badung

2020 ◽  
Vol 8 (2) ◽  
pp. 176
Author(s):  
Ni Made Ayu Krisna Wati ◽  
I Made Sudarma ◽  
Widhianthini Widhianthini
Keyword(s):  
Rice Field ◽  
Agricultural Land ◽  
Rice Fields ◽  
Paddy Fields ◽  
Interpretive Structural Modeling ◽  
Pests And Diseases ◽  
The North ◽  
Analysis Technique ◽  
Paddy Land ◽  
Management Priorities

Land is the main resource in carrying out development. Reduction of land area, especially agricultural land for development also has an impact on the area of agricultural land in Bali, especially in Badung Regency. The construction of accommodation to support the tourism sector led to the conversion of agricultural land in Badung Regency, which is mostly found in South Badung. North Badung, which does not have as many attractions as those in South Badung, has in fact also experienced the conversion of agricultural land, especially rice fields, as was the case in the Abiansemal and Mengwi Sub-Districts. The purpose of this study is to determine the factors that cause the conversion of paddy fields in the North Badung sub-district and determine the strategy to control the conversion of wetland in North Badung. The technique for determining key informants was done by purposive sampling with a total of 20 people. The analysis technique used is the Interpretive Structural Modeling (ISM) analysis. The results showed that the factors that caused the conversion of paddy fields or wetland in North Badung were economic elements, namely rice farming income, harvest price stability, access to crop marketing and paddy land prices. Social elements, namely family participation in managing rice fields, the influence of modernization on agriculture, the number of family members who are covered and regeneration of rice field management. The third elements is the environment, namely the level of water irrigation of rice fields, pests and diseases and housing needs due to increasing population. The strategy of controlling wetland conversion in North Badung that can be done based on short-term management priorities in the independent sector is the Millennial Farmer program.

scholarly journals PENGEMBANGAN LAHAN SAWAH (Sawah Bukaan Baru) DAN KENDALA PENGELOLAANNYA DALAM PENCAPAIAN TARGET SURPLUS 10 JUTA TON BERAS TAHUN 2014

2017 ◽  
Vol 10 (2) ◽  
pp. 257
Author(s):  
Chairul Muslim
Keyword(s):  
Food Security ◽  
Food Industry ◽  
Agricultural Land ◽  
Public Works ◽  
Paddy Fields ◽  
Director General ◽  
Land Resources ◽  
Dry Land ◽  
Irrigation Network ◽  
National Food Security

Food  is  a  strategic  commodity,  and  food  availability  absolute  priority because it can create food security and national stability. The purpose of the Director General of Food Crops is to maintain the availability of food. For 2014 the target is 10 million tons of Ministry of Agriculture surplus. In order to achieve this program certainly  accompanied  by  inter-ministerial  coordination,  one  with  the  ministry  of Public Works, in order to improve the irrigation network. The purpose of this paper is to discuss the development of new wetland openings, and is limited to aspects of the development  potential  of  land  for  opening  new  fields,  as  well  as  various  technical constraints management opening new fields of socio-economic aspects. Period (1992-2002) wetland conversion to nonagricultural reached 110,000 ha per year. And in the time span 2007-2010, in Java, the average conversion rate of 200,000 ha per year in the form of land irrigated technical, nontechnical and dry land. New paddy fields is one form of change of use of land resources is not agricultural land into agricultural land. And targets are achieved during the period 2010  -  2014 is 2 million hectares. While the Ministry of Agriculture to plan targets new paddy fields in 2012 covering an area of 100,000 hectares (ha) outside Java. To realize the program tersbut still many obstacles that must be resolved, one of the obstacles which spatial and spatial policy in  Indonesia  has  not  had  a  consistent  policy,  and  tend  to  overlap  (vertically  or horizontally).  To  overcome  this  problem  one  solution  is  the  collaboration  of  all stakeholders,  including  government,  private  sector,  researchers,  farmers,  and  food industry players in strengthening national food security.

scholarly journals Spatial-Temporal Land Use and Land Cover Changes in Urban Areas Using Remote Sensing Images and GIS Analysis: The Case Study of Opole, Poland

Geosciences ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 312
Author(s):  
Barbara Wiatkowska ◽  
Janusz Słodczyk ◽  
Aleksandra Stokowska
Keyword(s):  
Remote Sensing ◽  
Land Use ◽  
Land Cover ◽  
Satellite Imagery ◽  
Urban Areas ◽  
Agricultural Land ◽  
Urban Expansion ◽  
Landsat 8 ◽  
Rate Of Increase ◽  
Management Procedures

Urban expansion is a dynamic and complex phenomenon, often involving adverse changes in land use and land cover (LULC). This paper uses satellite imagery from Landsat-5 TM, Landsat-8 OLI, Sentinel-2 MSI, and GIS technology to analyse LULC changes in 2000, 2005, 2010, 2015, and 2020. The research was carried out in Opole, the capital of the Opole Agglomeration (south-western Poland). Maps produced from supervised spectral classification of remote sensing data revealed that in 20 years, built-up areas have increased about 40%, mainly at the expense of agricultural land. Detection of changes in the spatial pattern of LULC showed that the highest average rate of increase in built-up areas occurred in the zone 3–6 km (11.7%) and above 6 km (10.4%) from the centre of Opole. The analysis of the increase of built-up land in relation to the decreasing population (SDG 11.3.1) has confirmed the ongoing process of demographic suburbanisation. The paper shows that satellite imagery and GIS can be a valuable tool for local authorities and planners to monitor the scale of urbanisation processes for the purpose of adapting space management procedures to the changing environment.

scholarly journals Remarkable Population Resilience in a North African Endemic Damselfly in the Face of Rapid Agricultural Transformation

Insects ◽  
2021 ◽  
Vol 12 (4) ◽  
pp. 353
Author(s):  
Rassim Khelifa ◽  
Hayat Mahdjoub ◽  
Affef Baaloudj ◽  
Robert A. Cannings ◽  
Michael J. Samways
Keyword(s):  
Land Cover ◽  
Agricultural Land ◽  
Large Population ◽  
Agricultural Practices ◽  
Agricultural Expansion ◽  
North African ◽  
Natural Habitats ◽  
Agricultural Transformation ◽  
The Face ◽  
Terrestrial Habitats

Agriculture can be pervasive in its effect on wild nature, affecting various types of natural habitats, including lotic ecosystems. Here, we assess the extent of agricultural expansion on lotic systems in Northern Africa (Algeria, Tunisia, and Morocco) and document its overlap with the distribution of an endemic damselfly, Platycnemis subdilatata Selys, using species distribution modeling. We found that agricultural land cover increased by 321% in the region between 1992 and 2005, and, in particular, the main watercourses experienced an increase in agricultural land cover from 21.4% in 1992 to 78.1% in 2005, together with an increase in the intensity of 226% in agricultural practices. We used capture–mark–recapture (CMR) surveys in terrestrial habitats surrounding a stream bordered by grassland and cropland in northeastern Algeria to determine demographic parameters and population size, as well as cropland occupancy. CMR modeling showed that the recapture and survival probabilities had an average of 0.14 (95%CI: 0.14–0.17) and 0.86 (0.85–0.87), respectively. We estimated a relatively large population of P. subdilatata (~1750 individuals) in terrestrial habitats. The occupancy of terrestrial habitats by adults was spatially structured by age. Our data suggest that P. subdilatata has survived agricultural expansion and intensification better than other local odonate species, mainly because it can occupy transformed landscapes, such as croplands and grasslands.

scholarly journals Linking Long-Term Changes in Soil Salinity to Paddy Land Abandonment in Jaffna Peninsula, Sri Lanka

Agriculture ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 211
Author(s):  
Tharani Gopalakrishnan ◽  
Lalit Kumar
Keyword(s):  
Sri Lanka ◽  
Soil Salinity ◽  
Agricultural Land ◽  
Sea Water ◽  
Land Use Changes ◽  
Soil Salinization ◽  
Landsat Images ◽  
Paddy Land ◽  
Semi Arid Region

Soil salinity is a serious threat to coastal agriculture and has resulted in a significant reduction in agricultural output in many regions. Jaffna Peninsula, a semi-arid region located in the northern-most part of Sri Lanka, is also a victim of the adverse effects of coastal salinity. This study investigated long-term soil salinity changes and their link with agricultural land use changes, especially paddy land. Two Landsat images from 1988 and 2019 were used to map soil salinity distribution and changes. Another set of images was analyzed at four temporal periods to map abandoned paddy lands. A comparison of changes in soil salinity with abandoned paddy lands showed that abandoned paddy lands had significantly higher salinity than active paddy lands, confirming that increasing salts owing to the high levels of sea water intrusion in the soils, as well as higher water salinity in wells used for irrigation, could be the major drivers of degradation of paddy lands. The results also showed that there was a dramatic increase in soil salinity (1.4-fold) in the coastal lowlands of Jaffna Peninsula. 64.6% of the salinity-affected land was identified as being in the extreme saline category. In addition to reducing net arable lands, soil salinization has serious implications for food security and the livelihoods of farmers, potentially impacting the regional and national economy.

scholarly journals Assessing Urbanization Dynamics in Turkey’s Marmara Region Using CORINE Data between 2006 and 2018

2021 ◽  
Vol 13 (4) ◽  
pp. 664
Author(s):  
Özlem Altınkaya Genel ◽  
ChengHe Guan
Keyword(s):  
Land Cover ◽  
Land Use Planning ◽  
Complex Structure ◽  
Spatial Dynamics ◽  
Growth Dynamics ◽  
Theory And Practice ◽  
Marmara Region ◽  
Local Case ◽  
Sustainable Regional Development ◽  
Linking Theory And Practice

This study investigated the urban growth dynamics of urban regions. The study area was the Marmara Region, one of the most densely populated and ecologically diverse areas in Turkey. Using CORINE land cover data for 2006, 2012, and 2018, the study utilized multiple correspondence analyses and cluster analyses, to analyze land cover changes. The resulting maps, visualized in GIS, revealed the rapid urban transformation of the regional structure, formerly comprised of four distinct areas, into a more complex structure, in which densification and sprawl occur simultaneously. Our findings demonstrated a dissonance between the spatial dynamics of the Marmara Region during the study period, and the capacity and scope of the simultaneously initiated regional policies and mega-projects. This uncoordinated approach has endangered the region’s sustainable development. The paper, therefore, discusses the importance of land use planning and transboundary collaboration for sustainable regional development. Beyond the local case, the results contribute to critical theories in regional planning by linking theory and practice.

scholarly journals How Can We Represent Seasonal Land Use Dynamics in SWAT and SWAT+ Models for African Cultivated Catchments?

Water ◽  
2020 ◽  
Vol 12 (6) ◽  
pp. 1541
Author(s):  
Albert Nkwasa ◽  
Celray James Chawanda ◽  
Anna Msigwa ◽  
Hans C. Komakech ◽  
Boud Verbeiren ◽  
...  
Keyword(s):  
Land Use ◽  
Land Cover ◽  
Agricultural Land ◽  
Swat Model ◽  
Agricultural Practices ◽  
Area Index ◽  
Land Use Dynamics ◽  
Cropping Seasons ◽  
Decision Tables ◽  
Land Cover Maps

In SWAT and SWAT+ models, the variations in hydrological processes are represented by Hydrological Response Units (HRUs). In the default models, agricultural land cover is represented by a single growing cycle. However, agricultural land use, especially in African cultivated catchments, typically consists of several cropping seasons, following dry and wet seasonal patterns, and are hence incorrectly represented in SWAT and SWAT+ default models. In this paper, we propose a procedure to incorporate agricultural seasonal land-use dynamics by (1) mapping land-use trajectories instead of static land-cover maps and (2) linking these trajectories to agricultural management settings. This approach was tested in SWAT and SWAT+ models of Usa catchment in Tanzania that is intensively cultivated by implementing dominant dynamic trajectories. Our results were evaluated with remote-sensing observations for Leaf Area Index (LAI), which showed that a single growing cycle did not well represent vegetation dynamics. A better agreement was obtained after implementing seasonal land-use dynamics for cultivated HRUs. It was concluded that the representation of seasonal land-use dynamics through trajectory implementation can lead to improved temporal patterns of LAI in default models. The SWAT+ model had higher flexibility in representing agricultural practices, using decision tables, and by being able to represent mixed cropping cultivations.

Bats respond negatively to increases in the amount and homogenization of agricultural land cover

2019 ◽  
Vol 34 (8) ◽  
pp. 1889-1903
Author(s):  
Julia E. Put ◽  
Lenore Fahrig ◽  
Greg W. Mitchell
Keyword(s):  
Land Cover ◽  
Agricultural Land

scholarly journals A Place-Based Approach to Agricultural Nonmaterial Intangible Cultural Ecosystem Service Values

2020 ◽  
Vol 12 (2) ◽  
pp. 699 ◽  
Author(s):  
Joy R. Petway ◽  
Yu-Pin Lin ◽  
Rainer F. Wunderlich
Keyword(s):  
Land Cover ◽  
Ecosystem Service ◽  
Agricultural Landscape ◽  
Agricultural Land ◽  
Environmental Data ◽  
Farming Practices ◽  
Environmental Characteristics ◽  
Cultural Ecosystem Service ◽  
Context Specific ◽  
Landscape Biodiversity

Though agricultural landscape biodiversity and ecosystem service (ES) conservation is crucial to sustainability, agricultural land is often underrepresented in ES studies, while cultural ES associated with agricultural land is often limited to aesthetic and tourism recreation value only. This study mapped 7 nonmaterial-intangible cultural ES (NICE) valuations of 34 rural farmers in western Taiwan using the Social Values for Ecosystem Services (SolVES) methodology, to show the effect of farming practices on NICE valuations. However, rather than a direct causal relationship between the environmental characteristics that underpin ES, and respondents’ ES valuations, we found that environmental data is not explanatory enough for causality within a socio-ecological production landscape where one type of land cover type (a micro mosaic of agricultural land cover) predominates. To compensate, we used a place-based approach with Google Maps data to create context-specific data to inform our assessment of NICE valuations. Based on 338 mapped points of 7 NICE valuations distributed among 6 areas within the landscape, we compared 2 groups of farmers and found that farmers’ valuations about their landscape were better understood when accounting for both the landscape’s cultural places and environmental characteristics, rather than environmental characteristics alone. Further, farmers’ experience and knowledge influenced their NICE valuations such that farm areas were found to be sources of multiple NICE benefits demonstrating that farming practices may influence ES valuation in general.

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