scholarly journals Poor science meets political neglect: Land use changes of high conservation value forests in Indonesia

2021 ◽  
pp. 199-208
Author(s):  
Arnanto Nurprabowo ◽  
San Afri Awang ◽  
Sigit Hardwinarto ◽  
Budi Dharmawan ◽  
Muhammad Haidar Daulay ◽  
...  
Keyword(s):  
Land Use ◽  
Land Use Changes ◽  
Land Allocation ◽  
Forest Land ◽  
Scientific Evaluation ◽  
Government Officials ◽  
Free Trade Zones ◽  
Regulatory Frameworks ◽  
High Conservation ◽  
Potential Land

Forest land allocation and use in Indonesia have been politically contested and characterized by poor data and competing interests of different institutions. This study analyzes the process of integrating scientific findings in policymaking about land use and changes. The focus is on the processes related to the changes of Highly Important Forest Zones with Strategic Values (Dampak Penting Cakupan Luas dan bernilai Strategis/DPCLS). DPCLS forests are unique as any changes require approval from the parliament to complement the processes at the Ministry of Environment and Forestry and must be based on rigorous scientific evaluation. This study uses the case of Riau Islands (Kepri) Province, previously part of Riau Province, which to date is one of only two Indonesian provinces yet to accept the forest zonings of the Ministry. The province’s strategic positions as exclusive economic and free trade zones make it further interesting in terms of land allocation as land becomes increasingly valuable for other uses. This paper specifically asks how the scientific investigation on the potential land use changes were conducted, how reliable the discoveries are, and how they were utilized in multiple steps at different institutions from the proposal evaluations to the approval stages. Our research indicates that scientific findings have rarely been integrated in policy making regarding DPCLS forests in Kepri Province. In addition, the scientific findings are weak; the institution producing them is heavily dominated by government officials and paid consultants/ experts. The scientific body was only established to fulfill the formal processes required by the regulatory frameworks. Proposals and decisions on the changes of DPCLS forests in Kepri Province are more characterized by political considerations. The “scientific findings” of the current land use in Kepri Province is used as a political commodity (or commodities) to support the interests of actors.

scholarly journals Integration of GIS and Markov chain model for land use change assessment: A case study in the upstream Ba river basin, Gia Lai province

2021 ◽  
Vol 20 (04) ◽  
pp. 69-77
Author(s):  
Huyen T. Nguyen
Keyword(s):  
Land Use ◽  
Markov Chain ◽  
Land Use Change ◽  
River Basin ◽  
Land Use Planning ◽  
Land Use Changes ◽  
Chain Model ◽  
Forest Land ◽  
Change Assessment ◽  
South Central

Ba river is the biggest river system in the South-Central Coast of Vietnam and plays a significant role in the socio-economic development of the region. Recently, land-use changes in Gia Lai province have been significantly transformed. Hence, to provide the information for land-use planning, there is an urgent need for land-use change assessment in the upstream Ba river basin. This study employed the Markov chain coupled with GIS to assess land-use changes between 2010 - 2015 and 2015 - 2020 periods. The results showed that during the period 2010 - 2015, there was no significant conversion of agricultural and reserve forest land. Meanwhile, a large proportion of unused (86%) and water and aquacultural land (57.5%) was converted into the other land-use types. Between 2020 and 2015, unused land decreased while the surface water and aquacultural land increased. The forest land accounted for a significant area (51.16%) during the 2015 - 2020 period. In addition, the driving forces leading to these changes were also analyzed, providing a more comprehensive of land-use change in the study area. In general, GIS and Markov were suitable for assessing land-use change. This study outcomes provide a general framework for land-use planning in Gia Lai province.

scholarly journals Changes in forest land use and management in Sabah, Malaysian Borneo, 1990–2010, with a focus on the Danum Valley region

2011 ◽  
Vol 366 (1582) ◽  
pp. 3168-3176 ◽  
Author(s):  
Glen Reynolds ◽  
Junaidi Payne ◽  
Waidi Sinun ◽  
Gregory Mosigil ◽  
Rory P. D. Walsh
Keyword(s):  
Land Use ◽  
Forest Management ◽  
Forest Restoration ◽  
Large Scale ◽  
Land Use Changes ◽  
Natural Forests ◽  
Forest Land ◽  
Conservation Area ◽  
Forest Reserves ◽  
The North

In an earlier special issue of this journal, Marsh & Greer summarized forest land use in Sabah at that time and gave an introduction to the Danum Valley Conservation Area. Since that assessment, during the period 1990–2010, the forests of Sabah and particularly those of the ca 10 000 km 2 concession managed on behalf of the State by Yayasan Sabah (the Sabah Foundation) have been subject to continual, industrial harvesting, including the premature re-logging of extensive tracts of previously only once-logged forest and large-scale conversion of natural forests to agricultural plantations. Over the same period, however, significant areas of previously unprotected pristine forest have been formally gazetted as conservation areas, while much of the forest to the north, the south and the east of the Danum Valley Conservation Area (the Ulu Segama and Malua Forest Reserves) has been given added protection and new forest restoration initiatives have been launched. This paper analyses these forest-management and land-use changes in Sabah during the period 1990–2010, with a focus on the Yayasan Sabah Forest Management Area. Important new conservation and forest restoration and rehabilitation initiatives within its borders are given particular emphasis.

scholarly journals Perubahan Lahan Pertanian dan Kehutanan di Kota Langsa dalam Kurun Waktu 10 Tahun (2007-2016)

2018 ◽  
Vol 3 (4) ◽  
pp. 897-906
Author(s):  
Siti Rahmatika ◽  
Syakur Syakur ◽  
Muhammad Rusdi
Keyword(s):  
Land Use ◽  
Mangrove Forest ◽  
Satellite Images ◽  
Land Use Changes ◽  
Rice Fields ◽  
Forest Land

Abstrak. Penelitian ini bertujuan untuk melihat perubahan penggunaan lahan pertanian dan kehutanan yang terjadi di masing-masing Kecamatan yang ada di Kota Langsa dalam waktu 10 tahun, mulai dari tahun 2007 sampai 2016. Teknik yang digunakan yaitu digitasi pada citra satelit Kota Langsa masing-masing tahun 2007 dan 2016 pada aplikasi Arc.Gis 10.3. Hasil penelitian didapatkan ada empat kelas lahan pertanian dan kehutanan yaitu persawahan, perkebunan, tambak, dan kehutanan yaitu hutan mangrove dengan  total perubahan lahan keseluruhan di Kota Langsa yaitu 210,09 ha dengan rincian per kecamatan yakni Kecamatan Langsa Timur 47,19 Ha, Langsa Lama 35,68 ha, Langsa Barat 62,86 ha, Langsa Baro 48,87 ha, dan Langsa Kota 15,49 ha.The Changes of Agricultural and Forest Land Use in Langsa City During 10 years (2007 – 2016)Abstract. The research aim is to study the changes in agricultural and forest land use that occurred in each sub-district of Langsa City within 10 years, started from 2007 to 2016. The change of land use detected by observing and digitizing the satellite images of Langsa City in 2007 and 2016 with the Arc.Gis 10.3 application. The results showed that there were four classes of agricultural dan forest land namely rice fields, plantations, ponds, and forestry, namely mangrove forest, with total of land use changes in Langsa city is 210.09 ha i.e. Langsa Timur 47.19 ha, Langsa Lama 35.68 ha, Langsa Barat 62.86 ha, Langsa Baro 48.87 ha, and Langsa Kota 15.49 ha.              

scholarly journals Are maps of nitrate reduction in groundwater altered by climate and land use changes?

2020 ◽  
Author(s):  
Ida Karlsson Seidenfaden ◽  
Torben Obel Sonnenborg ◽  
Jens Christian Refsgaard ◽  
Christen Duus Børgesen ◽  
Jørgen Eivind Olesen ◽  
...  
Keyword(s):  
Climate Change ◽  
Land Use ◽  
Nitrate Reduction ◽  
Climate Model ◽  
Land Use Changes ◽  
Distributed Hydrological Model ◽  
Flow Paths ◽  
Complex Interactions ◽  
Release Timing ◽  
Potential Land

Abstract. Nitrate reduction maps have been used routinely in Northern Europe for calculating efficiency of remediation measures and impact on climate change on nitrate leaching and are as such valuable tools for policy analysis and mitigation targeting. Nitrate maps are normally based on output from complex hydrological models, and once generated, are largely assumed constant in time. However, the distribution, magnitude and efficiency of nitrate reduction can not necessarily be considered stationary during changing climate and land use as flow paths, nitrate release timing and their interaction may shift. This study investigates the potential errors when a constant nitrate map is assumed during land use and climate change, both for N-loads and the spatial variation in reduction. For this purpose, a crop and soil model (Daisy) was setup up to provide nitrate input to a distributed hydrological model (MIKE SHE) for an agricultural catchment in Funen, Denmark. Nitrate reduction maps based on an observed dataset of land use and climate were generated and compared to nitrate reduction maps generated for all combinations of four potential land use change scenarios and four future climate model projections. Nitrate reduction maps were found to be more sensitive to changes in climate, leading to reduction map change of up to 10 %; while land use changes effects were minor. The study, however, also showed that the reductions maps are products of a range of complex interactions and that the combination of the choices made for selected scenarios, model formulations and assumptions are critical for the resulting span in reduction capability.

scholarly journals Pemodelan Perubahan Tataguna Lahan Terhadap Debit Banjir DAS Tanggul, Jember Menggunakan Model SWAT (Soil and Water Assessment Tool)

2020 ◽  
Vol 14 (2) ◽  
pp. 154-161
Author(s):  
Diah Ainunisa ◽  
◽  
Gusfan Halik ◽  
Wiwik Yunarni Widiarti ◽  
◽  
...  
Keyword(s):  
Land Use ◽  
Land Use Change ◽  
Rainy Season ◽  
Model Calibration ◽  
Assessment Tool ◽  
Swat Model ◽  
Land Use Changes ◽  
Forest Land ◽  
Water Assessment ◽  
Soil And Water

Population growth is one of the causes of land-use change that can increase runoff. Tanggul watershed is one of the watersheds which often overflows during the rainy season. This study purpose to analyze the effect of land-use changes on runoff in Tanggul watershed using SWAT (Soil and Water Assessment Tool) model. To make sure the performance of SWAT model calibration and classified by the value of NSE and R2. The result of calibration included in a good category and validation included in a very good category. This study was modeling forest land-use change in 2004-2017 to determine the effect of land-use change on runoff. The result in this model of forest land-use change can increase runoff.

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