Monitoring the effect of restoration measures in Indonesian peatlands by radar satellite imagery

Jaenicke, Julia; Englhart, Sandra; Siegert, Florian

doi:10.1016/j.jenvman.2010.09.029

Cited by 49 publications

(47 citation statements)

References 21 publications

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“…The survey was conducted in the middle of the dry season (5 to 10 August) to avoid problems related to standing water. Field observations and data from an extensive network of water table measurement locations in the area, installed for several years, showed that the peat surface is dry during this period and no standing water occurs in the surveyed area (Jaenicke et al, 2011).…”

Section: Acquisition and Processing Of Airborne Lidar Datamentioning

confidence: 99%

Detection of large above-ground biomass variability in lowland forest ecosystems by airborne LiDAR

et al. 2013

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Quantification of tropical forest above-ground biomass (AGB) over large areas as input for Reduced Emissions from Deforestation and forest Degradation (REDD+) projects and climate change models is challenging. This is the first study which attempts to estimate AGB and its variability across large areas of tropical lowland forests in Central Kalimantan (Indonesia) through correlating airborne light detection and ranging (LiDAR) to forest inventory data. Two LiDAR height metrics were analysed, and regression models could be improved through the use of LiDAR point densities as input (R² = 0.88; n = 52). Surveying with a LiDAR point density per square metre of about 4 resulted in the best cost / benefit ratio. We estimated AGB for 600 km of LiDAR tracks and showed that there exists a considerable variability of up to 140% within the same forest type due to varying environmental conditions. Impact from logging operations and the associated AGB losses dating back more than 10 yr could be assessed by LiDAR but not by multispectral satellite imagery. Comparison with a Landsat classification for a 1 million ha study area where AGB values were based on site-specific field inventory data, regional literature estimates, and default values by the Intergovernmental Panel on Climate Change (IPCC) showed an overestimation of 43%, 102%, and 137%, respectively. The results show that AGB overestimation may lead to wrong greenhouse gas (GHG) emission estimates due to deforestation in climate models. For REDD+ projects this leads to inaccurate carbon stock estimates and consequently to significantly wrong REDD+ based compensation payments

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Section: Acquisition and Processing Of Airborne Lidar Datamentioning

confidence: 99%

Detection of large above-ground biomass variability in lowland forest ecosystems by airborne LiDAR

et al. 2013

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“…Peatlands, which are naturally waterlogged and rich in carbon, are continually being exploited, particularly for drainage activities in response to agricultural development (Silvius and Diemont, 2007;Hooijer et al, 2010;Jaenicke et al, 2010;Miettinen and Liew, 2010). However, the unsustainable use of peatlands leads to extensive land clearing activities, deforestation, and land degradation (van Beukering et al, 2008;Ansari, 2011) which in turn lower the groundwater level and increase the risk of fire, particularly during the dry season (Wosten et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

Dust and Gas Emissions from Small-Scale Peat Combustion

Othman

Latif

2013

Aerosol Air Qual. Res.

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While peatland has long been exploited for agricultural activities, these make it vulnerable to fires, which emit pollutants into the atmosphere and adversely affect air quality. The aim of this study was thus to determine the main composition of air pollutants from peat soil combustion. The main parameters of the related gas pollutants, e.g., SO 2 , NO 2 , CO, O 3 and PM 10 , and their components, such as anions, cations, heavy metals and levoglucosan, have been determined. The gas concentration was determined using the colorimetric method after the air had been assimilated into absorbing solutions. The PM 10 concentration was established using a low volume air sampler equipped with weighted filter paper. The anion concentration of PM 10 was analyzed using ion chromatography, while the cation and heavy metal concentrations were ascertained using inductively couple plasma-mass spectroscopy (ICP-MS). Moreover, the concentration of levoglucosan was determined using the Anthrone-Sulfuric Colorimetric method. The results show that the dominant gas from the emission of burning peat soil was CO (13850-20610 μg/

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“…Increasing demand for real estate properties has also attracted developers to reclaim wet peatlands for developing new townships (Mutalib et al 1992). Therefore, reclamation of peat swamps for agriculture and other purposes has received increased attention by researchers and relevant agencies in recent years (Melling 2005, Jaenicke et al 2011.…”

Section: Introductionmentioning

confidence: 99%

Hydrological behaviour of a drained agricultural peat catchment in the tropics. 1: Rainfall, runoff and water table relationships

Katimon

Shahid

Wahab

et al. 2013

Hydrological Sciences Journal

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Hydrological data of a drained tropical peat catchment have been analysed through conventional quantitative hydrological approaches to characterize its hydrological behaviours and changes due to continuous drainage for a long period. The results show that the hydrology of the catchment is extremely dynamic and the catchment is flashy in nature. A decreasing trend in peak flow amount and an increasing trend in baseflow amount was observed in the catchment, indicating that continuous drainage has reduced the risk of both flooding and water scarcity in the catchment. Correlation analysis among rainfall, runoff and groundwater table reveals that saturation excessnear surface flow is the dominant mechanism responsible for rapid runoff generation in the catchment. Therefore, any physical alterations or disturbances to the upper part of the peat profile would definitely affect the overall hydrological behaviour of the peat catchment.Key words drained peat catchment; rainfall; water table; runoff ratio; tropics Comportement hydrologique d'un bassin versant agricole drainé en zone de tourbière tropicale. 1: Relations entre la pluie, le ruissellement et la nappe Résumé Les données hydrologiques d'un bassin versant tropical drainé en zone de tourbière ont été analysées par des approches hydrologiques quantitatives conventionnelles afin de caractériser son comportement hydrologique et son évolution en réponse au drainage continu pendant une longue période. Les résultats montrent que l'hydrologie la dynamique du bassin versant est très rapide, présentant des crues éclair. Une tendance à la diminution des débits de pointe et à l'augmentation des débits de base a été observée dans le bassin versant, ce qui indique que le drainage continu a permis de réduire à la fois le risque d'inondation et celui de pénurie d'eau. La corrélation entre les précipitations, les eaux de ruissellement et le niveau de la nappe phréatique révèle que l'écoulement de surface par excès de saturation est le mécanisme dominant responsable de la production de ruissellement rapide dans le bassin versant. Par conséquent, toutes les modifications physiques ou perturbations de la partie supérieure du profil de tourbe auraient certainement une incidence sur le comportement hydrologique global de ce bassin versant en zone de tourbière.

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Monitoring the effect of restoration measures in Indonesian peatlands by radar satellite imagery

Cited by 49 publications

References 21 publications

Detection of large above-ground biomass variability in lowland forest ecosystems by airborne LiDAR

Detection of large above-ground biomass variability in lowland forest ecosystems by airborne LiDAR

Dust and Gas Emissions from Small-Scale Peat Combustion

Hydrological behaviour of a drained agricultural peat catchment in the tropics. 1: Rainfall, runoff and water table relationships

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