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All Journal Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Agromet Journal of Climate Change Society

Yon Sugiarto

Department Of Geophysics And Meteorology, Faculty Of Mathematics And Natural Sciences, IPB University, Dramaga Campus, Bogor, Indonesia 16680

Author-ID : 843887

Agriculture, Biological Sciences & Forestry Humanities Astronomy Biochemistry, Genetics & Molecular Biology Chemistry Earth & Planetary Sciences Economics, Econometrics & Finance Electrical & Electronics Engineering Environmental Science Physics Social Sciences

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ESTIMATION OF NET PRIMARY PRODUCTION (NPP) USING REMOTE SENSING APPROACH AND PLANT PHYSIOLOGICAL MODELING(PENDUGAAN NET PRIMARY PRODUCTION (NPP) MENGGUNAKAN PENDEKATAN PENGINDERAAN JAUH DAN MODELING FISIOLOGIS TANAMAN) Yon Sugiarto; Tania June; Bambang Sapto P
Agromet Vol. 22 No. 2 (2008): December 2008
Publisher : PERHIMPI (Indonesian Association of Agricultural Meteorology)

Information Net Primary Production (NPP) of tropical forests is important for the development of realistic global carbon budgets and for projecting how these ecosystems will be affected by climate changes. This research utilized remotely sensed data and micrometeorological measurement to provide information on vegetation condition. The objective of this research is to estimate spatial NPP using remote sensing approach and plant physiological/micrometeorological modeling. The estimation of NPP is conducted using modeling approach, which is based on relationship between radiation use efficiency, photosyntetically active radiation and fraction of absorbed photosynthetically active radiation by the plants’s canopy. Trend of NDVI derived using micrometeorological measurement showed an increase from 2001 to 2002, and then decrease from 2002 to 2004. Average different values (delta) between both methods used to derive NDVI is relatively constant around 0.33 with a high correlation of r2 = 0.98. Using remotely sensed data, the highest NPP values estimated is in year 2003 with value range between 2000 – 2500 (gC m-2 yr-1), less than 2% of the whole forest area. In 2003, 75% area has NPP between 1500 – 2000 (gC m-2 yr-1), meanwhile for 2002 and 2004 it is only 21% and 50 %, respectively. NPP values estimated using micrometeorological measurement show the increasing of NPP values from 2002 to 2003, and then decrease from 2003 to 2004. There is strong correlation between NPP values derived from the two methods with r2 = 0.98.

KAJIAN KESESUAIAN LAHAN TANAMAN CENGKEH (Eugenia aromatica L.) BERDASARKAN ASPEK AGROKLIMAT DAN KELAYAKAN EKONOMI (Studi kasus Provinsi Sulawesi Selatan)CROP LAND SUITABILITY FOR CLOVE (Eugenia aromatica L.)... Anisa Isnaeni; Yon Sugiarto
Agromet Vol. 24 No. 2 (2010): DECEMBER 2010
Publisher : PERHIMPI (Indonesian Association of Agricultural Meteorology)

Indonesian plantations are increasingly expanding and making progress so as to support the government programs in Indonesia Agricultural development is necessary, especially the plantation area of clove plantations which have many benefits and uses for the community.The aims of this study is to find out the suitability of the clove crop land in South Sulawesi province and the level of effectiveness in investing land. Methodology used is based on suitability area for agroclimate parameters and economical feasibility.The results of analysis shown that South Sulawesi Provinve are potential for extension based on the suitability of clove plants Agro-climate and the closure of its land in the amount of 26.743 km2.There are three land suitability classes, highly suitable areas or S1 (1.897 km2), moderately suitable areas or S2 (23.120 km) and marginally suitable areas or S3 (990 km2). In addition, the region still has the potential areas of land for plantation development is a form of forest land with an area of 8.694 km2.These three land suitabilitieshave feasibility of investment net profit in the S1 field with the present value of Rp 26.841.000/ha, 30,1% IRR, and BCR of 2,16.Net profit in the land S2 is Rp 16.864.000/ha, 24% IRR, and BCR of 1,73%, while net profit on the land S3 is Rp 2.723.000/ha.Areas of land which became the main development priorities with highprioritylandpresentinsixdistrictsnamelyWajo,Jeneponto,Sinjai,Bulukumba,Barru,andBoneIndonesian plantations are increasingly expanding and making progress so as to support the government programs in Indonesia Agricultural development is necessary, especially the plantation area of clove plantations which have many benefits and uses for the community.The aims of this study is to find out the suitability of the clove crop land in South Sulawesi province and the level of effectiveness in investing land. Methodology used is based on suitability area for agroclimate parameters and economical feasibility.The results of analysis shown that South Sulawesi Provinve are potential for extension based on the suitability of clove plants Agro-climate and the closure of its land in the amount of 26.743 km2.There are three land suitability classes, highly suitable areas or S1 (1.897 km2), moderately suitable areas or S2 (23.120 km) and marginally suitable areas or S3 (990 km2). In addition, the region still has the potential areas of land for plantation development is a form of forest land with an area of 8.694 km2.These three land suitabilitieshave feasibility of investment net profit in the S1 field with the present value of Rp 26.841.000/ha, 30,1% IRR, and BCR of 2,16.Net profit in the land S2 is Rp 16.864.000/ha, 24% IRR, and BCR of 1,73%, while net profit on the land S3 is Rp 2.723.000/ha.Areas of land which became the main development priorities with highprioritylandpresentinsixdistrictsnamelyWajo,Jeneponto,Sinjai,Bulukumba,Barru,andBone

Analysis of Climate Index with Historical Burn Analysis Method for Climate Change Adaptation (A Case Study in Pacitan District, East Java) Yon Sugiarto; Woro Estiningtyas; Wahyu Sukmana Dewi
Agromet Vol. 31 No. 1 (2017): JUNE 2017
Publisher : PERHIMPI (Indonesian Association of Agricultural Meteorology)

Drought recurrently occurs in Indonesia, and it is one of the climate-related hazards that has a major impact on agriculture and food security. However, there is no a scheme, which allows any damages in agriculture associated with drought event will get an insurance. This study aims to analyze the climate index based on the potency of drought in Pacitan District, East Java to support the development of climate index insurance as an effort to climate change adaptation. This study used a climate index derived from monthly rainfall data, which was calculated based on the historical burn analysis (HBA) method. We examined climate index and measured exit value as representing of the lowest value which payment of insurance should be fully paid. Our results showed that the value varies among sub-districts in Pacitan. Kebonagung sub-district revealed the highest exit value (89 mm), which means the insurance company should pay the full insurance coverage if the rainfall in the period insured below 89 mm. The lowest exit value (18 mm) was in Pringkuku sub-district. Our finding revealed that the index HBA is suitable to be applied in regions with limited climate data. Furthermore, our approach could be one of the strategies to cope with drought to stabilize rice production during the dry season. For wide implementation, supports from government through regulation is needed.

ANALISIS DAMPAK ENSO (EL-NINO SOUTHERN OSCILLATION) TERHADAP TINGKAT KEKERINGAN UNTUK TANAMAN PANGAN DAN PALAWIJA (STUDI KASUS : SULAWESI SELATAN) Yon Sugiarto; Dori Kurniawan
Agromet Vol. 23 No. 2 (2009): December 2009
Publisher : PERHIMPI (Indonesian Association of Agricultural Meteorology)

Weather and climate variability is a long-term weather changes that are characterized by fluctuations and deviations from normal conditions. One possible cause is the ENSO (El-Nino Southern Oscillation) which affected in drought events. This research was conducted to determine and analyze the level of drought in South Sulawesi due to the influence of ENSO and compare the production of food crops and secondary food crops in normal years and ENSO.Drought index is calculated based on the Palmer method by using data of rainfall, air temperature and soil moisture as input. Based on the calculations using the method of Palmer drought index, the regions with monsoon rain patterns have a range of values between -22.71 drought until 18:23, Equatorial patterns ranging from -4.03 to 5:07, and on local patterns rangedfrom -8.57 until 10:07. Verification test results on the drought index of crop production data showed that each ENSO event is always followed by a decline in rice production, especially of rice fields. Food crop production generally tends to increase at each ENSO event because most crops are plants that are resistant to drought, particularly local varieties that have adapted well to their environment. Thus, the drought caused by the influence of ENSO can affect the production of food crops and secondary food crops.

The Role of Vegetation in Reducing Anthropogenic CO2 in Bogor City Ariesta Kusuma Wardhani; Bregas Budianto; Yon Sugiarto
Agromet Vol. 32 No. 1 (2018): JUNE 2018
Publisher : PERHIMPI (Indonesian Association of Agricultural Meteorology)

Vegetation has a role in reducing CO2 from anthropogenic activities through photosynthesis. Fuel combustion is one of the activities that greatly contribute to CO2 emissions. As a city with many destinations, the possibility of CO2 emissions will increase in Bogor especially on holidays because of motorized vehicle from other cities. This research aims to determine the absorption capability of vegetation in Bogor City in reducing CO2 emitted from fuel combustion. We analyzed CO2 data for 2017 by day to obtain traffic levels in the city assuming that people mobility using vehicle was influenced by day. Then we separated CO2 data into slow and fast photosynthesis rate based on air temperature. We determined the absorption capability of vegetation at daily basis by calculating the difference between the min and the max of CO2 concentration divided by the min of CO2. Our results showed that the lowest CO2 level was in Sunday. On that day, the average air temperatur was high indicating the less CO2 concentration. Our one-way Anova test confirmed this finding. The finding revealed that the absorption capability of vegetation to reduce anthropogenic CO2 was still limited. To implement Bogor as green city, more vegetations and gardens are needed to balance an increased CO2.

Projection of Rice Blast Diseases in West Java Region based on Climate Change Scenario Aji Irsyam N. Sukarta; Yon Sugiarto; Yonny Koesmaryono
Agromet Vol. 32 No. 2 (2018): DECEMBER 2018
Publisher : PERHIMPI (Indonesian Association of Agricultural Meteorology)

Rice production in Indonesia has faced many challenges including disease outbreak leading to crop failure. Blast is a common disease, which is often found in paddy, that able to inhibit its growth and development. Here, we present simulation modeling to predict blast outbreak under climate change projection scenario in west Java, Indonesia. Two climate projections namely RCP4.5 and RCP8.5 were employed as input for EPIRICE epidemiological model. With this model we anaysed the potency of blast outbreak for 2021-2050. Then we compared the area of the projected blast with the output from current climate condition (1996-2005, as a baseline). Our results show that the potency of blast outbreak was in a low level under baseline. The area indicating a low level of outbreak was observed for both climate projections. Our findings revealed that a decreasing trend on the outbreak is expected for 2021-2050. However, an increased number of area having blast outbreak was observed especially in mountains region as many of 2%.day and 6%.day for RCP4.5 and RCP8.5, respectively.

Potential of Green Leafhopper Attack (Empoasca sp.) in Tea Plantation Based on Climate Change Scenarios Dwi Adelianingsih; Rini Hidayati; Yon Sugiarto
Agromet Vol. 33 No. 2 (2019): DECEMBER 2019
Publisher : PERHIMPI (Indonesian Association of Agricultural Meteorology)

Pest growth is closely related to the climate conditions. This study aimed to analyze the impact of climate variability and climate change on the potential attack of green leafhopper (Empoasca sp.) on tea plantations at PTPN VIII Gunung Mas. The analysis was carried out to calculate the value of Ecoclimatic Index (EI) based on the functions of the compare years and the compare location in CLIMEX model. Pest suitability in the future was projected using RCP 4.5 and 8.5 climate scenarios, which were derived from MIROC 5 and CCSM 4 climate model outputs. The result indicated that Gunung Mas Tea Plantation was suitable for Empoasca sp. growth. The EI value (58) in the baseline year (2012-2017) confirmed the suitability. Climate variability influences the suitability for Empoasca sp. growth. During El-Niño, the EI value decrease substantially (~26%). On the other hand, the EI value is projected to slightly increase in the future for both climate scenarios.

Estimation of Oil Palm Total Carbon Fluxes Using Remote Sensing Artika; Tania June; Resti Salmayenti; Yon Sugiarto; Handoko; Christian Stiegler; Alexander Knohl
Agromet Vol. 37 No. 1 (2023): JUNE 2023
Publisher : PERHIMPI (Indonesian Association of Agricultural Meteorology)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/j.agromet.37.1.12-20

Net primary production (NPP) is one of the approaches used to estimate the amount of carbon sequestration by plants. This research aims to estimate the total carbon flux exchanged from different ages of oil palm using remote sensing. The study site was at the PTPN VI Batang Hari, Jambi, Sumatra, Indonesia. The amount of carbon sequestration by oil palm plantations at PTPN VI Batang Hari, Jambi can be estimated using remote sensing based on the light use efficiency (LUE) model. The results showed that the oil palm age affects the amount of carbon sequestrated. The lowest Net primary production value was found at one year of planting 4.28 gCm-2day-1, and the highest was 9.38 gCm-2day-1 at 20 years of planting. The model LUE output was validated using Eddy covariance data and the results showed a low error and a high accuracy rate with RMSE = 0.05 gCMJ-1, R2 = 92%, and p-value = 0.04. We concluded that the LUE model can be used with high accuracy to estimate the amount of carbon absorption of oil palm when direct measurement is unavailable.

Micrometeorological Method in Determining Plant Capacity to Absorb Pollutant: Oil Palm Case Study Zaâ€™immatul Muâ€™allimah; Tania June; Resti Salmayenti; Yon Sugiarto; Handoko; Christian Stiegler; Alexander Knohl
Agromet Vol. 37 No. 1 (2023): JUNE 2023
Publisher : PERHIMPI (Indonesian Association of Agricultural Meteorology)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/j.agromet.37.1.44-53

The vegetation canopy's height and characteristics directly affect the turbulence that controls the exchange of mass and energy between the vegetation and the surrounding atmosphere. Turbulence also controls the momentum transfer towards the mass-carrying plant canopy and the accompanying atmospheric properties so that vegetation can contribute to pollutant deposition. This study aims to estimate the canopy capacity of oil palms to absorb pollutants based on their momentum transfer, the influence of atmospheric stability dynamics, and rainy and dry periods upon absorbed pollutants from PTPN VI in Jambi province for the period of January to December 2015 used micrometeorological observation data. The results showed that the dry deposition capacity value at the stable, neutral, and unstable atmospheric conditions were 2.06 x 10-3 kg/m2, 3.50 x 10-3 kg/m2, and 4.35 x 10-3 kg/m2, respectively. The stable or unstable conditions affected the momentum transfer through decreasing or increasing turbulence. In stable conditions, the cooling of the atmosphere impacts the turbulence to be restrained. The result also showed that the dry deposition capacity during the dry and rainy periods were 4.5 x 10-3 kg/m2 and 2.9 x 10-3 kg/m2, respectively. Further, atmospheric conditions tended to be unstable during the dry period, while the rainy period tended to be stable. This research showed that the momentum transfer method can estimate gas type pollutants by vegetation.

Co-Authors Aji Irsyam N. Sukarta Alexander Knohl Alexander Knohl Anisa Isnaeni Ariesta Kusuma Wardhani Artika Ayu Arista Andarini Putri Bambang Dwi Dasanto Bambang Sapto P Bregas Budianto Budi Kartiwa Christian Stiegler Christian Stiegler Dori Kurniawan Dwi Adelianingsih Handoko Handoko Nani Heryani P. Perdinan Raynaldi Rachmat Resti Salmayenti Rini Hidayati Tania June Tri Handayani Wahyu Sukmana Dewi Woro Estiningtyas Yonny Koesmaryono Zaâ€™immatul Muâ€™allimah

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