bluuebunny/crossref_metadata_2025_split huggingface dataset:
Preliminary assessment on above ground carbon stock of agroforestry and monoculture crop systems in peatlands
Authors: Siarudin M , Indrajaya Y , Hani A 
Published: April 2020

Abstract
Peatlands can be used for crop cultivation with various combination patterns both agroforestry and monoculture systems. Utilization of these lands not only produces high economic value products, but also contributes in providing environmental services, including carbon sequestration. This study aims to measure aboveground carbon stock of agroforestry and agricultural monoculture systems in Rasau Jaya, Kubu Raya Regency, West Kalimantan Province. The agroforestry system observed is divided based on the level of peat depth, which are 0-2 m and 3-4 m. The pattern of agroforestry at a depth of 0-2 m is a combination of timber and non timber tree species and agricultural crops, while the pattern of agroforestry at a depth of 3-4 m is a combination of timber and non-timber tree species and plantation crops. Timber tree species are Pulai (Alstonia pneumatohara) and Gerunggang (Cratoxylon arborescens Bl); the non-timber tree species is jelutung (Dyera costulata); and plantation crop species are Jengkol (Archidendron pauciflorum) and Pinang (Areca catechu); and the agricultural crops are peanuts, cayenne pepper, tomatoes, bitter melon and eggplant. Observations were also conductedon the agricultural monoculture pattern, including the eggplant, chili, bitter melon and tomato. The components of measured carbon stocks are plant biomass (trees and lower plants), wooden necromasses, non-woody necromasses, and wild plant biomass. The measurement results show a shallow peat agroforestry system (0-2 m) with a combination of one year old trees and agricultural crops contributing to carbon stock of 0.8 tons/ha. Deep peat agroforestry systems (3-4m) with a combination of timber trees, non-timber trees and plantation crops contribute to carbon stocks of 3 tons/ha. While the monoculture system of agricultural crops produce an average carbon stock of 1.1 tons/ha. Contribution of tree component in the agroforestry system are still relatively small, which is 2.6% of total carbon stock. However, it is estimated that the carbon stocks will continue to increase with increasing age.
Hydrological responses of micro-catchments under different farming practices in Banjarnegara, Indonesia
Authors: van Brenk S , Marhaento H , Satriagasa M C , Suryatmojo H 
Published: April 2020

Abstract
Effects of two different farming practices namely mixed-cropping (i.e. agroforestry) and mono-cropping systems on hydrological responses were investigated based on a paired catchment method. Two catchments namely Tamansari catchment (16.4 Ha) and Penanggungan catchment (3.6 Ha), both are located in Banjarnegara district, Central Java, Indonesia, were studied. Based on drone mapping, the dominant land use of the Tamansari catchment was agroforestry where trees were combined with seasonal crops like cabbage, potatoes and carrots on the same unit of land, whereas the dominant land use of the Penanggungan was seasonal crops without any trees. For both catchments, meteorological data and discharge data were available from May 2017 to March 2018, so that made it possible to compare each other. Furthermore, the hydrological responses of the two catchments were compared for their water balance and the annual, seasonal and monthly Flow Duration Curves (FDC). The results showed that both catchments had their lowest rainfall in August and their highest rainfall in February. Based on the FDC, the Tamansari generally had a steadier flow and the range of discharge values was smaller than the Penanggungan, especially on February, the wettest month of the year. In the drier periods, the two catchments behave similarly, but in general, the Tamansari produced more discharge than the Penanggungan. Finally, based on the observation, it can generally conclude that a micro catchment mostly occupied with seasonal crops like in the Penanggungan catchment reacted more extreme to rainfall than a micro catchment mostly occupied with combined trees and seasonal crops in form of agroforestry like in the Tamansari catchment.
Landscape characteristics of Codot Coffee in Kota Agung Utara Forest Management Unit, Lampung
Authors: Riyanto D , Wulandari C , Darmawan A 
Published: April 2020

AbstractCodot coffee is a new coffee variety produced fromcodotor fruit-eating bats activity. This coffee is produced from bats spitting activity after they eat a full ripe coffee bean. We believed that there are interactions between coffee and codot along the landscape that can be withdrawn by using Geographic Information Systems (GIS). The purpose of this study is to determine the landscape characteristics of the distribution of codot coffee over Community Forest (Hutan Kemasyarakatan/HKm) area in Kota Agung Utara Forest Management Unit (FMU) (Kesatuan Pemangkuan Hutan/KPH). The codot coffee’s points were collected using direct GPS survey technique followed by spatial analysis. It was indicated that codot coffee has a tendency to exist between 0 to 300 m from the river, and more than 1,000 m from the road. The buffer analysis results of codot coffee distribution showed that codot has a tendency to require forests as a place to live and rest. Data showed that codot coffee mostly found in the slope between 15 to 30 percent and in the slope of 0 to 7 percent. The codot coffee were only found in area within 500 to 900 asl.
Tree and plant interactions in the agroforestry system: does the management of coffee intensification disrupt the soil hydrological system and pine growth?
Authors: Suprayogo D , Azmi E N , Ariesta D A , Sutejo Y A , Hakim A L , Prayogo C , McNamara N P 
Published: April 2020

Abstract
With increasing population pressure on forests in Perhutani land, coffee industrial plants are integrated in Pinus merkusii forests as agroforestry systems in the Community-Based Forest Management program especially in Java. This condition raises the research question (1) whether the growth of pine plants is not affected by the integration of coffee plants with various management?, (2) whether with more intensive management of coffee will be able to improve the growth and production of coffee plants? (3) Does the increasing coffee management will decrease the availability of soil water for coffee plant and pine trees?. This research was conducted with a nested design with one research factor, namely coffee management actions. There are 5 types of coffee management treatment namely (1) no management, (2) coffee with pruning, (3) coffee with laid-down the stems, (4) coffee with pruning and combined with fertilization and (5) reducing a half the pine population, with pruned coffee. The conclusion of this study is that pine growth, which is generally planted as a production forest in Perhutani, will experience a very significant decline if it is converted into a coffee-pine-based agroforestry system. However, as a social function of the forest area, the agroforestry system is still recommended if farmers do coffee treatment with regular pruning and fertilization. Perhutani’s recommendation by reducing a half the pine population in the age of 10 years is appropriate to facilitate the interaction of coffee and pine so that water and nutrient competition can be reduced.
Agroforestry systems and practices in hilly uplands of Misamis Oriental, Philippines
Authors: Palma R A , Canencia O P , Tiongco L E , Boniao R D , Florida E J , Dagonio J Y 
Published: April 2020

Abstract
A total 140 agroforestry farmers were randomly identified. The data were collected using survey questionnaires, formal interviews and reconnaissance surveys. Generally, the farmers were mature (51 yr and over), male, married, and had not finished a college degree. In spite of this, adoption of Falcata-based agroforestry practices was high as exemplified by the number of adopters, presence of various tree, agricultural crops, and animals. The study also revealed that tenurial status and farm size were the main factors hindering agroforestry adoption. Land owners with a large area are most likely to adopt different agroforestry practices. Tenants preferred to plant cash crops due to the issues on the right to choose what to plant, privacy of land and security of products and uncertainty on the length of time to cultivate the land. Most respondents practiced multistorey, intercropping, alley/hedgerow intercropping to maximize land utilization, and thereby produced a diversity of crops.
Configuration of resource access explaining the performance of community forest farmer groups in Gunungkidul, Yogyakarta
Authors: Hardianti A L , Permadi D B , Rohman  
Published: April 2020

Abstract
After more than 10 years managing state forestland under a social forestry program, community forestry’s farmer groups in Gunungkidul have shown differences in terms of their performance quality. The resource accesses (defined as the ability to benefit from certain resources) as stated by the theory of access (Ribot and Peluso, 2003) could affect their performance and subsequently their overall benefits from the social forestry program. This study aims to understand which configurations of resource access affecting the performance quality of forest farmer groups. In-depth interview and observation were carried out on the six forest farmer groups, covering the different degrees of success. The data were collected to measure the level of conditional variables (resource access) and outcome variable (the performance). The level of performances are indicated by forest conditions, institutional and business aspects. This paper applied Qualitative Comparative Analysis (QCA) with a four-value fuzzy set methodology to conduct a systematic cross-case comparison using fsQCA software to analyze the relationship between the condition and outcome variables. The results showed that two configurations of resource access profoundly explained the successful performance of the farmer groups. The first combination consists of access to knowledge, technology, financial, market, and social capital which can be found in Sedyo Rukun and Sido Maju II. Each of the access in the first combination contributes 30% towards the performance. The second combination consists of access to knowledge, technology, financial, labor, and social capital which explained the condition of Sedyo Lestari, Sedyo Makmur, dan Sido Dadi. Each of the access contributes 56% towards the performance. The prime implicant for successful quality performance is found in access to knowledge, indicating that farmer-to-farmer learning and extension services from third parties are required to be encouraged in social forestry programs.
How NGO fulfill the complex scheme of social forestry: a resume of SF scheme in Indonesia
Authors: Rahayu S , Laraswati D , Pratama A A , Permadi D B , Sahide M A K , Maryudi A 
Published: April 2020

Abstract
The Indonesian government shows a great commitment in allocating forests for community management through social forestry policies covering an area of 13,847,722 ha. The role of NGOs in realizing the implementation of social forestry in Indonesia cannot be ignored. They impetus the community to get legal permits in forest management, assist in preparing business plans, area management plans, and institutional management. This article explores the role of NGOs in the implementation of social forestry during the Jokowi-JK administration. We support the argument that NGOs play an important role in the implementation of social forestry, as evidenced by the achievement of permits and policies of the Ministry of Environment and Forestry recognizes that NGOs are formally involved in social forestry implementation.
Learning centres potentials for supporting NTFPS production from agroforest systems
Authors: Syarifah F A , Martini E , Trikoslamet  , Al-Hasan R 
Published: April 2020

Abstract
Extraction practices of NTFPs without introducing its domestication techniques have the potential to cause the extinction of the particular product or species. Currently, techniques to domesticate NTFPs under agroforestry systems have been explored, with two examples of economically valuable NTFP commodities are Trigona bee (Trigona sp.) and Bambu Tabah (Gigantochloa nigrociliata). Although techniques for its domestication have been identified, not much farmers know and understand how to domesticate the commodities. Government extension services are not yet disseminating information on NTFPs domestication, alternatives extension services approaches need to be explored to widespread information on NTFPs domestication to farmers. Learning centres can be one of the approaches that can support the dissemination of NTFPs domesticaion. This study was conducted to explore potentials of learning centres to support NTFPs production from agroforestry systems. Two case studies were taken, i.e. Trigona in Gunungkidul District and Bambu tabah in Lombok Tengah District. Information was collected to explore the potential adoption level of domestication techniques introduced by the learning centre, through interview with 60 learning centre visitors in Lombok Tengah and 55 in Gunungkidul. The study showed that learning centres increased the adoption potential of the NTFP domestication, particularly through facilities that were given to the community to be tested in their own plot. However, farmer’s accessibility to visit the learning centres are still limited. Government supports is needed to enhance farmers’ accessibility and development of learning centres as part of their forestry extension services programs for enhancing production of NTFPs as sources for local livelihoods.
Private forest in facing the timber legality regime in Indonesia: the NGOs’ role
Authors: Laraswati D , Rahayu S , Pratama A A , Soraya E , Sahide M A K , Maryudi A 
Published: April 2020

Abstract
Private forest becomes a role model of sustainable forest management in Indonesia. Not only it is able to rehabilitate critical lands, but it also significantly contributes to meet the community daily needs and wood-based industries due to using agroforestry system as its management practice. However, in 2009 the Ministry of Environment and Forestry (MoEF) of Indonesia decided to implement a timber legality assurance system as a mandatory instrument including for private forest. However, the administrations and procedures are complicated. Private forest thus faces new challenges to obey the complication of the system. NGOs are often mentioned as the most contributing actor in solving private forest difficulties. This paper thus attempts to shed light on the challenges faced by private forest because of the timber legality policy and how NGOs take their role.
Preparation and characterization of fatty acid eutectic/diatomite filter aid form-stable phase change material for thermal energy storage
Authors: Meng Duo , Wang Anqi 
Published: April 2020

Abstract
The aim of this study is to prepare a form-stable phase change material (PCM) with capric and lauric fatty acid (CA-LA) eutectic as the heat absorption material and diatomite filter aid as the supporting matrix. The method of vacuum impregnation was conducted to prepare the composite PCM which has high thermal performance. Its characteristics such as microstructure, thermo-physical propertiesand thermal stability were investigated by SEM, FT-IR, DSC and TG technique. The adsorption capacity of diatomite filter aid to CA-LA eutectic was 49wt%, and the composite PCM kept solid in macro-level even when the CA-LA melted due to the capillary and surface tension forces of diatomite filter aid. DSC analysis showed that phase change temperature and latent heat of the form-stable PCM was 21.8°C and 75.45 J·g-1 respectively. TG analysis indicated that the diatomite filter aid particles absorbed and constrained the CA-LA molecules in the pores and confirmed the form-stable property of the composite. After 100 times thermal cycling, the phase change temperature and latent heat of the form-stable PCM respectively decreased by 0.9% and 1.1%, which can be neglectable in the practical engineering application.
Decentralized cooperative optimization method to enhance discharging efficiency of distributed energy storage system
Authors: Huang Kun , Fu Ming , Zhang Xiaoyan 
Published: April 2020

Abstract
A decentralized cooperative optimization method is proposed in this study to improve discharging efficiencies of distributed energy storage systems (DESSs) in a smart distribution network (SDN). The proposed method achieves global information or control coordination only through local information interaction between neighbour agents without centralized agents. It is accomplished by using the improved consensus-based information discovery and pinning algorithm of multi-agent system (MAS), which obviates the need for a central controller. Meanwhile, the proposed method coordinates DESSs and the corresponding discharging efficiencies using associated marginal costs in a decentralize way, that can maximum the discharging efficiency while reducing local power mismatch in a SDN. Representative simulation cases are carried on to verify the effectiveness and adaptability of the proposed approach.
Application of 3D embedded discrete fracture model for simulating CO2-EOR and geological storage in fractured reservoirs
Authors: Du Xulin , Cheng Linsong , Liu Yanqin , Rao Xiang , Ma Ming , Cao Renyi , Zhou Jinchong 
Published: April 2020

Abstract
For the purpose of greenhouse gas control and environment protection, CO2 emission reduction has become a hot spot in global research. CO2-EOR and geological storage are widely regarded as one of the most economical and promising emission reduction measures. In this paper, the 3D embedded discrete fracture model (EDFM) is built to simulate the interfracture CO2 flooding and geological storage process in fractured reservoirs. This model can deal with the complex geological conditions of three-dimensional arbitrary inclined fracture networks, significantly improve the calculation efficiency, and accurately evaluate the CO2-EOR process of real reservoirs. The obtained CO2 reserves and saturation distribution can provide key technical parameters for field operations.
Sedimentary characteristics and exploration direction in the south of the central block in Pre-Caspian Basin
Authors: Sheng Shanbo , Wang Zhen , Liang Shuang , Cai Zheng 
Published: April 2020

Abstract
The Pre-Caspian Basin experienced the history from the Late Paleozoic craton margin to the Mesozoic-Cenozoic depression. It has been explored for a long time. It is the most important oil and gas producing area in Kazakhstan, and a large number of oil and gas fields have been discovered in it. The oil and gas discoveries are located in clastic rock and platform carbonate rock below the Lower Permian salt domes. The study area is located at the eastern margin of the Pre-Caspian Basin, where reservoirs are deposited in an open carbonate platform in the shallow sea. The most developed subfacies are intraplatform shoals and sea between shoals. The microfacies in the intraplatform shoals include bioclastic shoals and algae shoals, and represent dominant high-quality reservoirs. The central gentle zone and the eastern slope zone in the study area are potential targets for exploration and evaluation. All reservoirs are structural-lithologic reservoirs controlled by high lithologic barriers or updipped pinch-outs.
Numerical simulation of pressure distribution in a walking-beam type reheating furnace
Authors: Li Chaoxiang , Huang Yajun , Sun Junbo , Ni Yang , Lu Linlin 
Published: April 2020

Abstract
Numerical simulation of pressure distribution in a walking-beam reheating furnace was accomplished using FLUENT software. The effect of partition walls in the preheating zone on the flow field and pressure distribution in the reheating furnace was studied. The numerical results show that the partition walls in the preheating zone have an important influence on pressure distribution and temperature distribution in the reheating furnace. In order to improve the pressure distribution and the temperature uniformity in the reheating furnace, the partition walls in the preheating zone were retrofitted. After the partition walls retrofitting, the pressure distribution and the temperature distribution in the reheating furnace were improved. The heating efficiency of the reheating furnace was improved. Therefore, numerical results have great significance for improving pressure distribution and temperature distribution in the reheating furnace.
Test study of the water quantity loss of cooling tower on U-type liquidometer
Authors: Song Baohong 
Published: April 2020

Abstract
The water loss of a wet cooling tower was analyzed by changing the collection method for the collecting basin level data. The water quantity loss of the cooling tower was measured using a U-tube liquidometer to obtain real-time and accurate data. When the liquid level of the collecting basin decreased by 1 mm, the water quantity loss of one cooling tower was 1.38 m3. In stable engineering application operation and under different environmental and climatic conditions, the water quantity loss was between 13.83 kg s−1 and 18.07 kg s−1. Through the accurate measurement of the collecting basin level and the established water quantity loss law of the cooling tower, the correctness of Merkel assumption of air saturation in the cooling tower is analyzed. In addition, the variation laws of the evaporation and drift losses of the cooling tower were established. The testing and theoretical analysis of water quantity loss by using a test device will be widely used in the design and other related engineering fields, such as the control and research of the water quantity loss of the cooling tower and the drift recovery.
Research on integrated operation and maintenance acquisition and monitoring technology for new generation dispatching control system
Authors: Yu Fang , Sun Mingyang , Zhuang Weijin , Wang Yan 
Published: April 2020

Abstract
Focusing on the intelligence demands of operation and maintenance for the new generation dispatching control system and the technical requirements of pre-monitoring, early warning and fault handling in the event, based on the architecture with the characteristics of physical distribution and logical integration, this paper designs a kind of integrated operation and maintenance acquisition and monitoring method. It first builds the full model of the automation equipment operation information, collects and summarizes the operation information such as resource pool, platform status, database, application and multi-activity consistency and data consistency, then achieves real-time data acquisition of various key indicators information for the operation of the new generation of control systems; Through the wide-area system service bus, the system operation information is gathered into the integrated operation and maintenance center to realize panoramic monitoring of the operation status for the multi-activity analysis decision center, the dual-active model data center and the dual-active monitoring system, and to comprehensively improve the intelligent level of operation and maintenance for the new generation dispatching control system.