scholarly journals PERUBAHAN PENGGUNAAN LAHAN DAN POTENSI PERLUASAN LAHAN UNTUK SAWAH DI KABUPATEN CIANJUR

2019 ◽  
Vol 19 (1) ◽  
pp. 33-40
Author(s):  
Chaida Chairunnisa ◽  
Khursatul Munibah ◽  
Widiatmaka Widiatmaka

Population growth, increasing income, and the rapid economic development create complexity of land issues. Land has a central role in  food production, however demand for land increased significantly to meet the needs of the population. Cianjur Regency is one of regencies in the southern part of West Java Province with the largest paddy field area. However, paddy field conversion into non agricultural land or another agricultural land resulted in the decrease of paddy field area. Therefore, in the context of maintaining the availability of rice in Cianjur Regency, this study aimed to: (1) analyze the patterns of land use/land cover, (2) evaluate land suitability for paddy field, and (3) analyze the potency of land for paddy field expansion. Land use change was identified using Landsat imagery of 2000 and 2015 by using fusion techniques. Land suitability for paddy field was analyzed using limiting factor method. Potential for paddy field expansion was analyzed according to land suitability and agricultural land allocation in official regional land use plan map (“RTRW”). The results showed that in the period of 2000 to 2015, most of paddy field were converted into settlements. Land suitability classes for paddy field in Cianjur Regency were not suitable (N) (61.19%), suitable (S2) (9.53%), and marginally suitable (S3)(29.28%). Cianjur Regency still has the potency of land to be used for paddy field expansion of 148,980 ha. Keywords: Land use change, potential area for paddy field priority, land suitability for paddy field

2019 ◽  
Vol 21 (3) ◽  
pp. 390
Author(s):  
Asep Anwar Nugraha ◽  
Widiatmaka Widiatmaka ◽  
Irman Firmansyah

Rice is still a staple food in Indonesia, including in West Bandung Regency West Java Province. West Bandung regency was reached food self-sufficiency in 2010. The objectives at this study were: i) to identify land use land cover (LULC) in West Bandung; ii) to analyze suitability and availability for paddy field in West Bandung and iii) to arrange the direction of rice field development in West Bandung. Data analysis using geografis information system (GIS). Identify land use land cover by interpretation of SPOT imagery 6 2016. Analysis of the suitability and availability of paddy fields by overlapping land use maps, maps of forest areas and soil maps. The direction of paddy fields development based on actual land and a potential land of paddy fields. The alignment of wetland land use by overlapping maps of suitability and availability of land and spatial pattern patterns (RTRW) Kabupaten Bandung Barat 2009-2029. The result of land use interpretation is dominated by forest area of 37,335 ha, while paddy field area 15,953 ha. Land suitability evaluation consists of suitable (S2) and marginally suitable (S3) using matching criteria. The analysis result shows that the land suitability and available for paddy field was 25,147 ha. Direction of land development for Paddy field area was directed to actual paddy field largely 14,923 ha for intensification and potential land available for paddy field largely 10,224 ha for extensification. The land use of paddy fields has alignment with RTRW covering 2,018 ha and recommended as sustainable food agriculture land.


2013 ◽  
Vol 316-317 ◽  
pp. 197-199 ◽  
Author(s):  
Chen Guang Xu ◽  
Amat Anwar

On the basis of analysis of the development of urbanization and land use change in Zhengzhou City in2004-2010, The drive mechanism of the intensity of land use change in the research context of rapid urbanization, To explore the degree of land use change human driving factors, Drive and build a model, The results show that: Unit of agricultural land and the ratio of the output value of the land for construction as well as population density and land use intensity positive correlation, Making land use intensity tends to increase, The population density growth, Urbanization of the population and economic non-farm is the main driving factor for the intensity of land use change. And then proceed to the analysis of the spatial pattern of Zhengzhou City, Investigate the level of urbanization and land use / cover the relationship between landscape pattern.


2021 ◽  
Author(s):  
Hossein Talebi Khiavi ◽  
Seyyede Khamsa Asbaghian Namini ◽  
Mohammad Ali Asaadi ◽  
Raoof Mostafazadeh

Abstract Investigating the rate and the process of land-use change and its economic effects during the last years are among the main bases of land management in the future. East Meshgin region in Ardabil province is one of the agricultural production centers, where the construction of the Sabalan dam developed the agricultural activities. In this research, the six land uses, including rangeland, orchard, agriculture, bare land, outcrop, and water bodies during the years of 1998–1999, were classified using Landsat imagery. Also, the single and comprehensive dynamic land-use change indices were employed to compute the rate and process of land-use change. The land-use change matrix is developed in three time periods (1998–2003, 2003–2008, and 2013–2019). The economic evaluation of land use has been conducted during this period. The results showed that the highest rate of land-use change was converting the rangeland to bare lands. While in the period of 2008–2013, the highest rate of land-use change was rangeland conversion to agriculture lands that has caused increased net income by 4027,258 $. The collected data relates to the total period also confirms the change of rangeland use to bare lands. Also, the results of the single dynamic land-use change model show that in each period, the most change was related to water body land use. Among other land-uses, the highest rate of change was related to agricultural land use between 2013–2019 in the period of Sabalan dam operation. This study is performed to facilitate policymakers, planners, and other development stakeholders in this sector to adopt the best option for land-use management and sustainable land development.


2019 ◽  
Vol 21 (2) ◽  
pp. 267
Author(s):  
Muji Esti Wahyudi ◽  
Khursatul Munibah ◽  
Widiatmaka Widiatmaka

Bontang is the youngest city in East Kalimantan which focused to industrial sector. As the industry city, Bontang has been growing rapidly especially for population and regional development. This study was aimed to (a) identified land use in Bontang at 2002, 2009 and 2016 (b) analyze land use change and land use prediction in 2023 (c) evaluate land suitability and availability for settlement and (d) to estimate the land required for settlement in Bontang. The research was conducted by overlay method, matching system based on minimum limiting factor and descriptive analysis. Results analysis showed that actual land use in Bontang (2016) was dominated by bush, forest, mangrove, settlement, industry and plantation area. Dominant land use change (2002-2016) in Bontang was forest to bush. The area of settlement in 2016 was about 1.770 ha and predicted to be the highest increased compared to other land use in 2023. Land suitability analysis showed that 4.864 ha or 30,71% of this region was in suitable class fo settlement. The availability of suitable land settlement exclude the existing was about 941,5 ha, which could meet the needs of settlement up to 2050.


2021 ◽  
Author(s):  
Atuhombye Sigala ◽  
Kelvin Ngongolo ◽  
Naza Mmbaga

Abstract Background Land use land cover change (LULCC) is a global threat to biodiversity conservation. Endemic species such as Kihansi spray toads (KST) are prone to extinction due to LULCC. This study assessed the LULCC of the Kihansi catchment (KC), a potential habitat for the KST and adjacent areas. Remote sensing (RS), geographical information system (GIS) and 156 questionnaires administered to three surrounding villages namely: Mgugwe, Udagaji and Ukami were used to assess the LULCC forms in the study area. Landsat imagery and ground truthing, were used to classify and monitor LULCC for 25 years from 1995 to 2020. Results Settlements and agricultural land increased by 26.23% and 3.7% respectively. On the other hand, forested land decreased by a rate of 10-20% per year. Across respondents a significant increase (p = 0.041) of the population was reported which contributed to settlement expansion. LULC of KC and adjacent areas were observed to change over the years that anticipate threatening the reintroduced KST and its habitat. Conclusions This study provides baseline information for land use planning in KC and adjacent areas that consider the sustainable conservation of re-introduced KST while improving the livelihood of the adjacent local communities.


2021 ◽  
Vol 2021 ◽  
pp. 1-13
Author(s):  
Belayneh Bufebo ◽  
Eyasu Elias

Land use change is one of the challenges that aggravate environmental problems. Understanding the scope of land use change, driving forces, and consequences is very crucial for proper management of land resources. We investigated land use/land cover changes using remote sensing data (for the years 1973, 1995, and 2017), and field observation, household survey, key informant interview, and focus group discussion were used to determine the drivers and consequences of land use/land cover changes in Shenkolla watershed, south central Ethiopia. Unsupervised and supervised classification techniques were employed to get thematic information from satellite imagery. ArcGIS 10.3 and QGIS v 3.0 softwares were used to accomplish the analysis. The results disclosed that Shenkolla watershed has changed significantly during the past 4 decades between 1973 and 2017. This observed change indicates a reduction in forest land and an increase in agricultural land. Forest land was reduced from 29.51% in 1973 to 20.52% in 2017, but agricultural land was expanded from 70.49% in 1973 to 79.48% in 2017. Agricultural expansion, policy change and social unrest, population pressure, shortage of farm land, and biophysical factors were major driving forces of the LU/LC changes. Environmental implications such as climate change, biodiversity loss, scarcity of basic forest products, habitat alteration, decline in quality and availability of water, and crop yield reduction are the consequences of the LU/LC change. The expansion of agricultural land at the expense of forest cover in Shenkolla watershed has negative implications on the natural resources and the livelihood of local people. Hence, appropriate measures need to be employed to reduce the dramatic change in land use and to harmonize environmental conservation with human livelihood.


2018 ◽  
Vol 1 (3) ◽  
pp. 243 ◽  
Author(s):  
Benadikta Widjayatnika ◽  
Dwi Putro Tejo Baskoro ◽  
Andrea Emma Pravitasari

Penajam Paser Utara was one of the youngest regency in East Kalimantan which focused to develop agriculture sector, especially food crops. Contribution agriculture sector to Gross Regional Domestic Product (PDRB) in 2015 was in second position accounted for 20.97%. This research was aimed to compile direction for agricultural land use based on actual land use, regional development index and land suitability. Land use change was obtained by overlay method within two land use map (2010 and 2016) from BPN, regional development was analyzed by skalogram method using PODES data (2011 and 2014) from BPS and land suitability was evaluated referred to FAO framework using matching method between land unit mapping based on soil map 1:50,000 from BBSDLP and criteria for specific commodities. Actual land use in Penajam Paser Utara (2016) consist of forest (32.92%), plantation (25.51%), industrial forest (17.09%), bush (8.76%) and other land use (15.72%). Land use change pattern from 2010 to 2016 showed increasing of plantation area (3.55%) due to forest land decreasing (1.42%). Regional development indicated by increasing of average IPD from 21.72 (2011) to 32.04 (2014). Land suitability for agriculture was classified in S3 (marginally suitable)-N2 (permanently not suitable). Retention factors were erosion hazard (e), rooting media (r), nutrion retention (n) and nutrient availability (n). Available land for agriculture using largely 162,493 Ha consist of (a) plantation area largely 113,796 Ha (b) wetland crop largely 24,258 (c) dry land crop largely 15,101 Ha and (d) not suitable for agriculture largely 6,027 Ha.


2021 ◽  
Vol 10 (4) ◽  
pp. 259
Author(s):  
Sitarani Safitri ◽  
Ketut Wikantika ◽  
Akhmad Riqqi ◽  
Albertus Deliar ◽  
Irawan Sumarto

Indonesia currently has 269 million people or 3.49% of the world’s total population and is ranked as the fourth most populous country in the world. Analysis by the Ministry of Public Works and Public Housing of Indonesia in 2010 shows that Java’s biocapacity is already experiencing a deficit. Therefore, optimization needs to be done to reduce deficits. This study aims to optimize and assess spatial allocation accuracy based on land-use/land cover suitability. In this study, the ecological footprint (EF) is utilized as a spatial allocation assessment based on physiological needs. The concept of land suitability aims for optimal and sustainable land use. Moreover, the land suitability model was conducted using the support vector machine (SVM). SVM is used to find the best hyperplane by maximizing the distance between classes. A hyperplane is a function that can be used to separate land-use/land cover types. The land suitability model’s overall-accuracy model was 86.46%, with a kappa coefficient value of 0.812. The final results show that agricultural land, plantations, and pastureland are still experiencing deficits, but there is some reduction. The deficit reduction for agricultural land reached 510,588.49 ha, 18,986.14 ha for plantations, and 1015.94 ha for pastures. The results indicate that the SVM algorithm is efficient in mapping the land-use suitability and optimizing spatial allocation.


Author(s):  
Yujuan Gao ◽  
Jianli Jia ◽  
Beidou Xi ◽  
Dongyu Cui ◽  
Wenbing Tan

The heavy metal pollution induced by agricultural land use change has attracted great attention. In this study, the divergent response of bioavailability of heavy metals in rhizosphere soil to different...


2021 ◽  
Vol 771 ◽  
pp. 144848
Author(s):  
Wei-Guo Zhang ◽  
Tao Wen ◽  
Li-Zhu Liu ◽  
Jiang-Ye Li ◽  
Yan Gao ◽  
...  

Sign in / Sign up

Export Citation Format

Share Document