scholarly journals Land suitability assessment in climate change and sea level rise conditions in Thai Binh provincewith GIS-ALES integration model

2021 ◽  
Vol 63 (11) ◽  
pp. 28-33
Author(s):  
Quoc Nam Hoang ◽  
◽  
Thi Thuy Nguyen ◽  
The Anh Luu ◽  
Ngoc Thanh Nguyen ◽  
...  
Keyword(s):  
Climate Change ◽  
Sea Level Rise ◽  
Sea Level ◽  
Agricultural Land ◽  
Land Suitability ◽  
Assessment Process ◽  
Soil Conditions ◽  
Suitability Assessment ◽  
Land Suitability Assessment ◽  
And Sea Level

Land suitability assessment is the scientific basis for rational land use planning. This assessment process relates to natural soil conditions (soil, topography, climate, hydrology, etc.). However, these factors are being changed due to the impacts of climate change and sea level rise, especially in coastal areas (saline intrusion, inundation), which should be included in the assessment. The results of applying the integrated GIS-ALES model for land suitability assessment in climate change and sea level rise in Thai Binh province, showed that the very suitable (S1) and suitable (S2) land area for rice cultivation, aquaculture, crops, and perennial crops (mainly fruit trees) were 92,818.5 ha, 34,518.6 ha, 27,424.9 ha, and 13,104.1 ha respectively. The spatial distribution of the appropriate grades was also shown on a 1/50,000 scale map. The results of this study help to orient planning the rational use of agricultural land for Thai Binh province.

scholarly journals Modifikasi Metode Evaluasi Kesesuaian Lahan Berorientasi Perubahan Iklim

2020 ◽  
Vol 12 (1) ◽  
pp. 1
Author(s):  
Sukarman Sukarman ◽  
Anny Mulyani ◽  
Setiyo Purwanto
Keyword(s):  
Climate Change ◽  
Sea Level Rise ◽  
Sea Level ◽  
Agricultural Sector ◽  
Production Systems ◽  
Land Suitability ◽  
Land Evaluation ◽  
Agricultural Commodities ◽  
Annual Average ◽  
And Sea Level

<p><strong>Abstract.</strong> Evaluasi lahan adalah salah satu instrumen yang biasa digunakan dalam menilai   kesesuaian lahan untuk berbagai komoditas pertanian di suatu wilayah.  Lahan dapat diklasfikasikan sesuai untuk pengembangan komoditas tertentu jika secara biofisik maupun secara sosial ekonomi tergolong sesuai. Parameter yang digunakan dalam menilai suatu lahan adalah karakteristik lahan,  diantaranya adalah unsur iklim, yaitu curah hujan rata-rata tahunan, temperatur udara rata-rata tahunan dan kelembaban udara.  Tujuan dari makalah ini adalah untuk memberikan saran dan rekomendasi untuk menambahkan parameter pada karakteristik tanah yang digunakan dalam penilaian kesesuaian lahan berbagai komoditas pertanian sebagai akibat dari perubahan iklim. Saat ini di dunia telah terjadi perubahan iklim yang berdampak pada karakteristik lahan di suatu wilayah.  Umumnya, perubahan iklim dianggap sebagai salah satu ancaman yang sangat serius terhadap sektor pertanian dan berpotensi mendatangkan masalah baru bagi keberlanjutan produksi pangan dan sistem produksi pertanian. Secara umum, perubahan iklim akan menyebabkan terjadinya ancaman kekeringan, banjir dan kenaikan muka air laut. Hal tersebut berdampak terhadap penyusutan dan degradasi (penurunan fungsi dan kualitas) sumberdaya lahan, air dan infrastruktur irigasi. Kejadian tersebut menyebabkan terjadinya penurunan pertumbuhan serta produksi tanaman.  Oleh karena itu faktor kerentanan kekeringan, kerentanan banjir dan kenaikan permukaan air laut diusulkan untuk dijadikan parameter penilaian kesesuaian lahan agar hasil penilaian kesesuaian lahan sesuai dengan kondisi sebenarnya.  </p><p><em><strong>Abstract.</strong> </em>Land evaluation is one of the instruments commonly used in land suitability assessment for various agricultural commodities in a region. Land can be classified suitable for the development of certain commodities if it is biophysically and socio-economically appropriate. The parameters used in assessing land suitability are the characteristics of the land, including the elements of climate, namely annual average rainfall, annual average air temperature and air humidity. The objective of this paper is to provide advices and recommendations for adding parameters on land characteristics used in the assessment of land suitability of various agricultural commodities as caused of climate change. At present, the world climate change has occurred which has an impact on the characteristics of land in a region. Generally, climate change is considered to be one of the most serious threats to the agricultural sector and has the potential to bring new problems to the sustainability of food production and agricultural production systems. In general, climate change may cause threats in the droughts, floods and sea level rise. This could have an impact on reduction and degradation (decreased function and quality) of land resources, water and irrigation infrastructure. This situation caused a decrease in plant growth and production. Therefore, factors of drought susceptibility, flood vulnerability and sea level rise are proposed to be used as parameters for land suitability evaluation in order to determine land suitability which represent actual conditions. </p>

scholarly journals Agricultural Land Suitability Assessment Using Satellite Remote Sensing-Derived Soil-Vegetation Indices

Land ◽  
2021 ◽  
Vol 10 (2) ◽  
pp. 223
Author(s):  
Rubaiya Binte Mostafiz ◽  
Ryozo Noguchi ◽  
Tofael Ahamed
Keyword(s):  
Remote Sensing ◽  
Satellite Remote Sensing ◽  
Agricultural Land ◽  
Expert Knowledge ◽  
Vegetation Indices ◽  
Land Suitability ◽  
Assessment System ◽  
Yield Estimation ◽  
Suitability Assessment ◽  
Land Suitability Assessment

Satellite remote sensing technologies have a high potential in applications for evaluating land conditions and can facilitate optimized planning for agricultural sectors. However, misinformed land selection decisions limit crop yields and increase production-related costs to farmers. Therefore, the purpose of this research was to develop a land suitability assessment system using satellite remote sensing-derived soil-vegetation indicators. A multicriteria decision analysis was conducted by integrating weighted linear combinations and fuzzy multicriteria analyses in a GIS platform for suitability assessment using the following eight criteria: elevation, slope, and LST vegetation indices (SAVI, ARVI, SARVI, MSAVI, and OSAVI). The relative priorities of the indicators were identified using a fuzzy expert system. Furthermore, the results of the land suitability assessment were evaluated by ground truthed yield data. In addition, a yield estimation method was developed using indices representing influential factors. The analysis utilizing equal weights showed that 43% of the land (1832 km2) was highly suitable, 41% of the land (1747 km2) was moderately suitable, and 10% of the land (426 km2) was marginally suitable for improved yield productions. Alternatively, expert knowledge was also considered, along with references, when using the fuzzy membership function; as a result, 48% of the land (2045 km2) was identified as being highly suitable; 39% of the land (2045 km2) was identified as being moderately suitable, and 7% of the land (298 km2) was identified as being marginally suitable. Additionally, 6% (256 km2) of the land was described as not suitable by both methods. Moreover, the yield estimation using SAVI (R2 = 77.3%), ARVI (R2 = 68.9%), SARVI (R2 = 71.1%), MSAVI (R2 = 74.5%) and OSAVI (R2 = 81.2%) showed a good predictive ability. Furthermore, the combined model using these five indices reported the highest accuracy (R2 = 0.839); this model was then applied to develop yield prediction maps for the corresponding years (2017–2020). This research suggests that satellite remote sensing methods in GIS platforms are an effective and convenient way for agricultural land-use planners and land policy makers to select suitable cultivable land areas with potential for increased agricultural production.

A radiocarbon chronology of Holocene climate change and sea-level rise at the Delmarva Peninsula, US Mid-Atlantic Coast

The Holocene ◽  
2021 ◽  
pp. 095968362110482
Author(s):  
Kelvin W Ramsey ◽  
Jaime L. Tomlinson ◽  
C. Robin Mattheus
Keyword(s):  
Climate Change ◽  
North America ◽  
Sea Level Rise ◽  
Sea Level ◽  
Early Holocene ◽  
Eastern North America ◽  
Delmarva Peninsula ◽  
The Holocene ◽  
Cool Climate ◽  
And Sea Level

Radiocarbon dates from 176 sites along the Delmarva Peninsula record the timing of deposition and sea-level rise, and non-marine wetland deposition. The dates provide confirmation of the boundaries of the Holocene subepochs (e.g. “early-middle-late” of Walker et al.) in the mid-Atlantic of eastern North America. These data record initial sea-level rise in the early Holocene, followed by a high rate of rise at the transition to the middle Holocene at 8.2 ka, and a leveling off and decrease in the late-Holocene. The dates, coupled to local and regional climate (pollen) records and fluvial activity, allow regional subdivision of the Holocene into six depositional and climate phases. Phase A (>10 ka) is the end of periglacial activity and transition of cold/cool climate to a warmer early Holocene. Phase B (10.2–8.2 ka) records rise of sea level in the region, a transition to Pinus-dominated forest, and decreased non-marine deposition on the uplands. Phase C (8.2–5.6 ka) shows rapid rates of sea-level rise, expansion of estuaries, and a decrease in non-marine deposition with cool and dry climate. Phase D (5.6–4.2 ka) is a time of high rates of sea-level rise, expanding estuaries, and dry and cool climate; the Atlantic shoreline transgressed rapidly and there was little to no deposition on the uplands. Phase E (4.2–1.1 ka) is a time of lowering sea-level rise rates, Atlantic shorelines nearing their present position, and marine shoal deposition; widespread non-marine deposition resumed with a wetter and warmer climate. Phase F (1.1 ka-present) incorporates the Medieval Climate Anomaly and European settlement on the Delmarva Peninsula. Chronology of depositional phases and coastal changes related to sea-level rise is useful for archeological studies of human occupation in relation to climate change in eastern North America, and provides an important dataset for future regional and global sea-level reconstructions.

Sign in / Sign up

Export Citation Format

Share Document