scholarly journals Perkembangan Tanah Dari Bahan Vulkan Pada Toposekuen Wilayah Bangli Selatan, Kabupaten Bangli

2020 ◽  
Vol 2 (1) ◽  
pp. 9-17
Author(s):  
Nuranita Naningsi
Keyword(s):  
Sea Level ◽  
Secondary Data ◽  
Exchange Capacity ◽  
Soil Survey ◽  
Climate Type ◽  
Volcanic Material ◽  
Research Areas ◽  
Level Profile ◽  
Slope Direction ◽  
Genesis Of Soils

Research on the development of soil from vulkan material in the toposcopic southern  Bangli Region as for the purpose of the study is as follows: (1) the process of formation and development of soil formed from toposcopic volcanic material in the southern, Bangli Region (2) obtain data on soil characteristics in the southern Bangli Region (3) knowing the potential of land for agricultural management in the southern, Bangli Region.This research was carried out with methods of soil survey, laboratory analysis, and supported with secondary data. Three profiles that represent Local Topography is selected based on the height of the different places, profile (N-1) with an altitude of 850 metres above sea level, profile (N-2) with an altitude of 540 metres above sea level, and the profile (N-1) h with an altitude of 200 metres above sea level. A third profile is have the same slope direction that is the direction the southern slope.Parent material formed in the area of research is derived from volcanic material, namely tuff deposits of lava and Vulcan of Buyan and Beratan, Batur, Ancient. Research areas included in the climate type A (very wet). The process of genesis of soils that occur in research is to the top slopes are experiencing a process of erosion, the middle slopes of the transport process and foot slopes of the deposition process.Third that profile has undergone a process of horisonisasi. The level of development of land is at the stage of virile. The characteristics of the soil a bit sour, cation exchange capacity of low to medium, base saturation is low to moderate, organic material is very low to low, the texture of the sand very clay to clay. Types of minerals found in the third profile dominated by halloysite minerals.Based on the results of research affect soil properties that are formed. On the top slopes are formed very deep in the depths of the solum 177 centi metres, middle slopes formed solum in depth 153 centi metres and foot slopes formed a shallow at a depth of solum 137 centi metres. Bangli area Southern potentially in support of plant growth and increase agricultural production.

scholarly journals Sistem Informasi Geografi untuk Analisis Potensi Sumber Daya Lahan Pesisir Kepulauan Padaido Kabupaten Biak Numfor, Papua

2021 ◽  
Vol 8 (5) ◽  
pp. 895
Author(s):  
Rosalina Giovani Mandowen ◽  
Rinto H Mambrasar
Keyword(s):  
Economic Value ◽  
Secondary Data ◽  
Regional Government ◽  
Land Resources ◽  
Descriptive Research ◽  
Research Areas ◽  
Analysis Technique ◽  
Gis Software ◽  
Coastal Land

<p class="Abstrak">Sistem Informasi Geografi (SIG) dengan layanan informasi pengelolaan lahan yang cocok sehingga lahan akan bernilai ekonomi, oleh karenanya penelitian ini membahas pemetaan dan pengkajian potensi sumber daya lahan pesisir dalam mendukung usaha budidaya, pariwisata, konservasi, dan daerah tangkapan ikan yang berkelanjutan. Metode penelitian secara deskriptif memakai pendekatan survei untuk pengamatan wilayah penelitian dan pengumpulan data sekunder serta pendekatan analisis spasial untuk parameter dan kriteria kesesuaian lahan. Teknik pengolahan dan analisis data ini menggunakan <em>software</em> SIG yakni <em>ArcGIS</em> 10.1 dengan model <em>skorin</em>g dan <em>overlay</em>. Hasil penelitian dengan studi kasus Kepulauan Padaido ini dapat disimpulkan bahwa saat ini dengan adanya SIG yang dibangun, Pemerintah Daerah Biak Numfor sudah dapat mengolah lahan pesisir untuk dimanfaatkan sesuai dengan potensi lahan yang seharusnya, seperti potensi lahan untuk usaha budidaya rumput laut seluas 13.269,41 ha atau 94%, untuk budidaya teripang seluas 7.069,91 ha atau 83%, sebagai aktifitas pariwisata pesisir seluas 7.778,45 ha atau 86%, sebagai kegiatan konservasi seluas 2.957,54 ha atau 163%, untuk daerah tangkapan ikan karang seluas 2.078,92 ha atau 80%, dan sebagai daerah tangkapan ikan pelagis 1.585,61 ha atau 87%.</p><p class="Abstrak"> </p><p class="Abstrak"><em><strong>Abstract</strong></em></p><p><em>Geographic Information System (GIS) with suitable land management information services so that the land will be of economic value, therefore this study discusses the mapping and assessment of the potential of coastal land resources in supporting sustainable aquaculture, tourism, conservation, and fishing grounds. The descriptive research method uses a survey approach for observation of research areas and secondary data collection as well as a spatial analysis approach for land suitability parameters and criteria. This data processing and analysis technique uses GIS software namely ArcGIS 10.1 with a scoring and overlay model. The results of the study with the Padaido Islands case study can be concluded that currently with the GIS being built, the Regional Government of Biak Numfor has been able to cultivate coastal land to be used according to the potential of the land that should be, such as the potential land for seaweed cultivation business area of 13,269.41 ha or 94%, for sea cucumber cultivation covering 7,069.91 ha or 83%, as coastal tourism activities covering 7,778.45 ha or 86%, as conservation activities covering 2,957.54 ha or 163%, for reef catchments covering 2,078.92 ha or 80%, and as a pelagic catchment area 1,585.61 ha or 87%.</em><em></em></p><p> </p>

scholarly journals KARAKTERISASI DAN KLASIFIKASI TANAH ULTISOL DI KECAMATAN INDRAJAYA KABUPATEN PIDIE

2018 ◽  
Vol 14 (2) ◽  
pp. 52-59
Author(s):  
Sri Handayani ◽  
Karnilawati Karnilawati
Keyword(s):  
Cation Exchange Capacity ◽  
Field Survey ◽  
Secondary Data ◽  
Exchange Capacity ◽  
Soil Sampling ◽  
Soil Reaction ◽  
Organic P ◽  
Climate Data ◽  
Weight Value

This study aims to examine the characteristics of Ultisol soil and produce a system of naming Ultisol soil according to the USDA Land Taxonomy system in Indrajaya District, Pidie District. This research will be carried out in the villages of Gle Gapui, Tuha Suwiek and Masjid Suwiek Indrajaya sub-districts from June to November 2015. This study uses descriptive-quantitative method, which consists of the following stages: (1) Preparation, ie collecting secondary data such as climate data, maps etc. Then prepare the tools and materials for the field survey and establish the ground pedon (2) Field activities, including observation of soil profile, soil sampling, laboratory analysis. Subsequently classified the land based on the USDA Land Taxonomy System Profile Gle Gapui climber determinant (horate Bt) textured clay where there is increasing clay so it is included into the horizontal horizon. Content weight value is inversely proportional to permeability and porosity. The soil reaction is directly proportional to the saturation of base which is equally low. The content of C- organic, P is available and N total is low. Moderate Cation Exchange Capacity, exchangeable acids (H and Al) are high. The classification of Ultisol soil in the location of the Glealing Glean profile is Typic Hapludult, berliat, blend, isohipertermik.

Three Frontiers for the Future of Biodiversity Research Using Citizen Science Data

BioScience ◽  
2020 ◽  
Author(s):  
Corey T Callaghan ◽  
Alistair G B Poore ◽  
Thomas Mesaglio ◽  
Angela T Moles ◽  
Shinichi Nakagawa ◽  
...  
Keyword(s):  
Citizen Science ◽  
Secondary Data ◽  
Science Research ◽  
Single Species ◽  
Data Sets ◽  
Biodiversity Data ◽  
Science Data ◽  
Biodiversity Research ◽  
Research Areas ◽  
The Future

Abstract Citizen science is fundamentally shifting the future of biodiversity research. But although citizen science observations are contributing an increasingly large proportion of biodiversity data, they only feature in a relatively small percentage of research papers on biodiversity. We provide our perspective on three frontiers of citizen science research, areas that we feel to date have had minimal scientific exploration but that we believe deserve greater attention as they present substantial opportunities for the future of biodiversity research: sampling the undersampled, capitalizing on citizen science's unique ability to sample poorly sampled taxa and regions of the world, reducing taxonomic and spatial biases in global biodiversity data sets; estimating abundance and density in space and time, develop techniques to derive taxon-specific densities from presence or absence and presence-only data; and capitalizing on secondary data collection, moving beyond data on the occurrence of single species and gain further understanding of ecological interactions among species or habitats. The contribution of citizen science to understanding the important biodiversity questions of our time should be more fully realized.

scholarly journals Factors Affecting Productivity of Oil Palm (Elaeis guineensis Jacq.) at Various Afdelings in Bah Jambi Farm PT. Perkebunan Nusantara IV

2022 ◽  
Vol 9 (1) ◽  
pp. 99-110
Author(s):  
Amir Fhad Sastranegara Harahap ◽  
Mochammad Munir
Keyword(s):  
Oil Palm ◽  
Elaeis Guineensis ◽  
Light Exposure ◽  
Descriptive Analysis ◽  
Secondary Data ◽  
Exchange Capacity ◽  
Coefficient Of Determination ◽  
Organic C ◽  
Factors Affecting ◽  
North Sumatra

North Sumatra Province, where the second-highest oil palm productivity in Indonesia, has successfully reached fresh fruit bunches (FFB) production of 5,775,631.82 tons in 2016. However, the level of oil palm productivity tends to be unstable and low. The purpose of this study was to identify and analyze factors influencing the level of oil palm productivity at the Bah Jambi Plantation PTPN IV, Simalungun Regency, North Sumatra Province. The method used in this study was the qualitative descriptive analysis method by collecting secondary data at research locations at 4 Afdeling Kebun Bah Jambi PT. Nusantara IV Plantation. The results of correlation and regression analysis showed that soil factor such as organic C, soil pH, cation exchange capacity and the availability of soil N, P, K and Mg is the most dominant factors in influencing the amount of oil palm productivity which have determination coefficient (R2) more than 90%. Meanwhile, climate factors such as evapotranspiration, duration of light exposure, wind speed and rainfall have the most role in influencing oil palm productivity which has a coefficient of determination (R2) of 95%, 94%, 88% and 33%.

scholarly journals On the classification and genesis of soils, derived from andesitic volcanic material under a monsoon climate.

1959 ◽  
Vol 7 (1) ◽  
pp. 1-21
Author(s):  
T.K. Hong ◽  
J. Van Schuylenborgh
Keyword(s):  
Organic Matter ◽  
Soil Organic Matter ◽  
Organic Acid ◽  
Forest Soils ◽  
Monsoon Climate ◽  
Volcanic Material ◽  
Podzolic Soils ◽  
Wet Climate ◽  
Genesis Of Soils ◽  
Brown Forest Soils

The Lawu volcano was sampled from an altitude of 500-3, 300 m and investigated morphologically, mineralogically and chemically. The soil organic matter was analysed in respect of its C, H, O and N content. Comparison of soils in a monsoon climate with those formed in a wet climate showed that the process of laterization proceeded to higher altitudes in a monsoon climate. It seems possible to recognize the following belts: a zone from 3, 300 to 2, 500 m altitude with brown podzolic soils, 2, 000-1, 400 m with brown forest soils, 1, 400-1, 000 m with latosolic brown forest soils and 1, 000-300 m with brown and reddish-brown latosolic soils. Organic acid was a more important soil-forming factor than CO2 at altitudes > 1, 000 m and under a monsoon climate. An explanation is proposed for the curious trends of C/N ratios of the soil and organic matter and for the trends in the clay's molar Al2O3/Fe2O3 ratios.-From authors' summary. (Abstract retrieved from CAB Abstracts by CABI’s permission)

scholarly journals CHANGE IN SPATIAL AND TEMPORAL CHARACTERISTICS OF RAINFALL IN EAST JAVA PROVINCE IN RELATION TO GLOBAL CLIMATE CHANGE PERUBAHAN KARAKTERISTIK CURAH HUJAN MENURUT RUANG DAN WAKTU DI PROVINSI JAWA TIMUR DALAM KAITANNYA DENGAN PERUBAHAN IKLIM ...

Agromet ◽  
2009 ◽  
Vol 23 (1) ◽  
pp. 29
Author(s):  
Moh. Ismail Wahab ◽  
S. Sudibyakto ◽  
Sunarto Gunadi ◽  
W.S. Suratman
Keyword(s):  
Climate Change ◽  
Rainy Season ◽  
Global Climate ◽  
Secondary Data ◽  
Agricultural Technology ◽  
Spatial And Temporal Variation ◽  
Climate Type ◽  
Monthly Data ◽  
Map Scale ◽  
Spatial And Temporal Characteristics

This study aims to analyze spatial and temporal variation of rainfall in the year 1971 until the year 2007 that is divided into two (2) periods ie 1971-1989 and 1990-2007 in relat ion to climate global change. The research was conducted in the area of East Java province from July until December 2008. The secondary data used in the research were: 1) Rainfall monthly data from 106 stations located in East Java within the period of 1971-2007 obtained from the Agency for Meteorology and Geophysical Karangploso Malang, 2) Sea Surface Temperature Nino 3.4 (http ://www.cpc.ncep.noaa.gov.), 3) Soil map scale 1: 250,000 obtanined from the Center Institute for Environmental Resource Management of Agriculture, and the map of Agroecological Zone (AEZ) of East Java scale 1: 250,000 from Assessment Institute for Agricultural Technology East Java. The analysis of rainfall characteristic consists of a) the changes of climate type Oldeman, b) the changes of the early dry and rainy season, c) the changes in of rainfall amount in dry and rainy season. The results showed that in 1971-1989 periods, the type of Oldeman climate in East Java vary from B1 to E, but after the 1990s the type of Oldeman climate change varied from C1 to D4 meaning that a part of East Java area (16.7%) become drier and 17.8% area of East Java became wet. The analysis of rainfall stations (106 stations) showed that some of rainfall stations (58.49%) have decreased the number of dry season rainfall about 3 - 500 mm/season. 56 stations (52.8%) have increased the number of rainy season rainfall in the range 1-600 mm /rainy season, while the 49 rainfall stations (46.22%) have decreased the number of rainfall in the range of 1-500 mm/season. Changes in the characteristics of rainfall in East Java, which occurred within the period of 1971-1989 and 1990-2007 was caused by the ENSO phenomenon.

scholarly journals Analysis of Milestones and Achievements to Increase Sustainability at Expo 2020

2020 ◽  
Vol 1 (1) ◽  
pp. 1-5
Author(s):  
Ahmad Hakimzadeh ◽  
Daniel Marco-Stefan Kleber ◽  
Ana Stranjancevic
Keyword(s):  
Secondary Data ◽  
Modern Technology ◽  
Long Term Effects ◽  
World Record ◽  
Research Areas ◽  
World Expo ◽  
Secondary Data Sources ◽  
Identification Analysis ◽  
Depth Interviews

Dubai, a city synonymous with multiple world-record breaking achievements in terms of architecture, rapid growth, and advancement in several fields. A definitive force in the region that aims to not only excel ahead of its neighbors, but lead amongst the world's best. The next ambitious project is hosting the World Expo 2020 that will utilize modern technology and design in daily transactions and innovative infrastructure to fuel the city's movements. There are many challenges and concerns that are immediately apparent when revisiting the long-term effects of previous World Expos through the years. The purpose of this scientific study is to identify and to anticipate these challenges while ideating possible solutions for them at the same point in time. The following methods were used for the research at hand: Identification, analysis and comparison of most relevant secondary data sources within the research areas of event and sustainability management. In addition, depth interviews with academics that are well-versed within the field of sustainability as well as with individuals working within Expo 2020 were conducted. The research presents an overview of key learnings from previous World Expos along with what additional novel and creative measures have been introduced in the blueprint for Expo 2020 and its future. The scope of this article is limited to an analysis of past mega events while external circumstances may vary in 2020 due to dynamic and fast changing external environments. Additionally, interview bias was reduced to a minimum but cannot be fully eliminated. 

USE OF A SOIL DATA FILE FOR PEDOLOGICAL RESEARCH

1974 ◽  
Vol 54 (2) ◽  
pp. 195-204 ◽  
Author(s):  
B. KLOOSTERMAN ◽  
L. M. LAVKULICH ◽  
M. K. JOHN
Keyword(s):  
Soil Properties ◽  
Cation Exchange ◽  
Cation Exchange Capacity ◽  
Data File ◽  
Exchange Capacity ◽  
Soil Survey ◽  
Soil Parameters ◽  
Soil Drainage ◽  
Normal Distributions ◽  
Podzolic Soils

The potential application of a computer soil data file to the study of soil concepts is discussed. This method aids the pedologist to analyze, summarize and correlate large quantities of data. For applied objectives the data file allows the prediction of soil properties for interpretive purposes. The computerized soil data file was used to explore its usefulness in studying the concept of the modal profile, confirmation of definitions of the Podzolic and Gleysolic Great Groups, derivation of equations for estimating soil drainage and cation-exchange capacity, and studying some interrelationships among soil properties. Soil parameters used to define soils at the Order and Great Group levels did trend toward normal distributions for Gleysolic but less for Podzolic soils. The prediction equations for cation-exchange capacity accounted for a higher percentage of the variation than did equations for soil drainage. Many soil property interrelationships were confirmed. The study illustrates some of the weaknesses of using routine soil survey data collected over a 10-yr period.

scholarly journals PREDIKSI EROSI DAN SEDIMENTASI PADA BERBAGAI PENGGUNAAN LAHAN DI SUB DAS MASANG BAGIAN HULU DI KABUPATEN AGAM

Jurnal Solum ◽  
2011 ◽  
Vol 8 (1) ◽  
pp. 11
Author(s):  
Aprisal Aprisal
Keyword(s):  
Land Use ◽  
Plant Density ◽  
Secondary Data ◽  
Crop Coefficient ◽  
Soil Survey ◽  
Delivery Ratio ◽  
Sediment Delivery Ratio ◽  
Sediment Delivery ◽  
Data Analyses ◽  
Housing Area

Erosion and sedimentation prediction in sub-watershed Masang was conducted to predict amount of soil eroded and sedimented from several land use in the location, and to find out  alternative land use that can suppress erosion to be equal to or less than tolerated erosion as well.  Methods employed to do this research were 1) analysis of basic data (topography map, land use map, and secondary data such as rainfall data from the nearest meteorology station), 2) soil survey and identification to field, 3) soil analyses at laboratorium, and 4) data analyses using USLE erosion model and sediment delivery ratio (SDR).  The results showed that amount of soil eroded from all land use except from forest was higher than tolerated erosion.  Among the types of land use were mixed garden, housing, plantation, and bush.  Higher erosion than tolerated erosion was probably due to low plant density, big percentage of uncover land, therefore, raindrops became easier to hit soil and then disperse the aggregates.  As a consequence, erosion and sedimentation became bigger.  Soil eroded could be minimized into the same or less than tolerated erosion by implementing conservation agroecotechnology by reducing crop coefficient value (into 0.001) through increasing plant density and changing bush land into garden or plantation.  For housing area, the area should be planted by perennial crops, should be provided by terraces to ditches to pass runoff.  Soil sedimentl was calculated to be higher from garden and bush, but by implementing agroecotechnology conservation sediment can be controlled.Keywords: erosion, sedimentation, watershed

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