Jurnal Wasian最新文献_第4页

Study of Light Intensity in Riparian Zone of Teak Production Forest in KHDTK Cemoro Modang KHDTK Cemoro Modang柚木生产林河岸带光强研究

Jurnal Wasian Pub Date : 2020-06-29 DOI: 10.20886/jwas.v7i1.5430

A. Nugroho, H. Riyanto

{"title":"Study of Light Intensity in Riparian Zone of Teak Production Forest in KHDTK Cemoro Modang","authors":"A. Nugroho, H. Riyanto","doi":"10.20886/jwas.v7i1.5430","DOIUrl":"https://doi.org/10.20886/jwas.v7i1.5430","url":null,"abstract":"Vegetation is one of the factors that influence the protection function of the riparian zone. Riparian vegetation in teak production forests is dominated by teak plantation with low species diversity. Rehabilitation is needed to increase the role of vegetation in protecting riparian zone. Data and information of light intensity is required to support the success of rehabilitation. Light intensity is a significant factor for photosynthesis which impacts on the survival, growth and adaptation of a vegetation. The varying light intensity in the riparian zone due to diverse land cover becomes a challenge in rehabilitating this area. This study aims to identify light intensity in riparian zone of Modang River and Cemoro River in the teak production forest. Recognizing light characteristics will help in species selection to rehabilitate this area. Primary and secondary data were used in this study. Direct measurement of light intensity was carried out along riparian zone of the Modang and Cemoro Rivers by systematic sampling. A sampling plot measuring 20 x 20 meter was used as the location of the sampling point with a total of 36 plots. Climate data are obtained from field observations through the nearest climatology station. The results showed that different canopy cover causing light intensity of Modang and Cemoro rivers varies. Canopy cover in this area can be divided into canopy cover of teak forest of various ages (production plants), johar (previous rehabilitation plants), and logged-over areas. The selection of tolerant and intolerant trees is important to use as consideration for rehabilitation, in addition to other silvicultural and socio-economic considerations of the local community. Keywords: light, riparian, teak production forest","PeriodicalId":31303,"journal":{"name":"Jurnal Wasian","volume":"7 1","pages":"15-24"},"PeriodicalIF":0.0,"publicationDate":"2020-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42470740","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Analysis of Vulnerability Levels to the Flash Flood Based on Social Economic and Institutional Factors in Wasior, Teluk Wondama, West Papua 基于西巴布亚特鲁克旺达马瓦西尔地区社会、经济和制度因素的山洪脆弱性分析

Jurnal Wasian Pub Date : 2020-06-29 DOI: 10.20886/jwas.v7i1.4785

B. W. Hastanti, F. J. Hutapea

{"title":"Analysis of Vulnerability Levels to the Flash Flood Based on Social Economic and Institutional Factors in Wasior, Teluk Wondama, West Papua","authors":"B. W. Hastanti, F. J. Hutapea","doi":"10.20886/jwas.v7i1.4785","DOIUrl":"https://doi.org/10.20886/jwas.v7i1.4785","url":null,"abstract":"One form of disaster mitigation is to know the vulnerability of areas that are at risk of disaster socially and economically. Studies on vulnerability to flash floods are necessary, as it might prevent material losses and fatalities. Wasior District at Teluk Wondama Regency experienced a flash flood in 2010 causing negative impacts such as fatalities and large material losses. To anticipate flash floods that might occur in the future, studies to evaluate the vulnerability to the flash flood are needed. This study aimed to: 1) analyze the level of vulnerability to flash floods in Wasior based on socioeconomic factors post the 2010 flash floods, 2) analyze the level of vulnerability to flash floods in Wasior based on institutional factors. The method used in this study was a combination of qualitative and quantitative methods. Data collection was conducted by observation, interview, and documentation. Data were analyzed by: 1) identifying the socioeconomic indicators of the community and institutions around the watershed, 2) providing weighting scores to the social economic criteria and institutional criteria from the most vulnerable to the least vulnerable, 3) assessing the level of community and institution vulnerabilities in the study site to the impact of flash floods based on the calculation of the weighting scores of socio-economic and institutional indicators. The results showed that the level of socioeconomic vulnerability to flash floods were categorized as moderate (total score 2.084), while the level of institutional vulnerability was low (total score 2.251). The results of this study can be used as a basis for considerations in the implementation of flash flood mitigation in Wasior. Keywords: vulnerabilities, social, economic, institutional, flash flood","PeriodicalId":31303,"journal":{"name":"Jurnal Wasian","volume":"7 1","pages":"25-38"},"PeriodicalIF":0.0,"publicationDate":"2020-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43599342","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Improving of Degraded Soil Quality for Ficus variegata Nursery Media by Adding Organic Matters and NPK Fertilizer 施用有机肥和氮磷钾改善榕树苗圃退化土壤质量

Jurnal Wasian Pub Date : 2019-12-30 DOI: 10.20886/jwas.v6i2.4720

Danu Danu, D. Sudrajat

{"title":"Improving of Degraded Soil Quality for Ficus variegata Nursery Media by Adding Organic Matters and NPK Fertilizer","authors":"Danu Danu, D. Sudrajat","doi":"10.20886/jwas.v6i2.4720","DOIUrl":"https://doi.org/10.20886/jwas.v6i2.4720","url":null,"abstract":"The availability of topsoil which is relatively fertile to use as seedling media is more and more limited so that the low nutrient degraded soil become alternative media for tree seedling nursery. The purpose of the research was to get the combination of degraded soil media mixture for nyawai ( Ficus variegata ) seedling media in nursery. The degraded soil collected in the heavy ero d ed soil in Rumpin Villages, Rumpin Sub District, Bogor. Completed random design with factorial was used to test the media mixture treatments and NPK fertilizer dosages on the growth of nyawai seedling. A pair of leaves seedlings was transplanted on 5 media treatments, i.e. top soil, degraded soil, degraded soil 70 % + compost 30 % (v:v), degraded soil 90 % + rice husk charcoal 10 % (v:v), and degraded soil 60 % + compost 30 % + rice husk charcoal 10 % (v/v). The dosage of NPK fertilizer was used as much: 0 g, 0.5 g polybag, and 1.0 g/polybag. The result showed that interaction of media and NPK fertilizer dosages was only affected on seedling biomass parameter. The interaction treatment of t he mixture media of degraded soil 60 %, compost 30 % and rice husk charcoal 10 % could increase the growth of nyawai seedlings high by 30.60 % and fertilizer treatment of 1 g NPK could increase seedling biomass 6.21 g. The mixture media and fertilizing treatment by NPK 1 g can be alternative media on nyawai nursery. Keywords: Ficus variegata , soil media, seedlings, growth","PeriodicalId":31303,"journal":{"name":"Jurnal Wasian","volume":"6 1","pages":"101-109"},"PeriodicalIF":0.0,"publicationDate":"2019-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43126536","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Perception and Adaptation of Coastal Community Toward Climate Change at Sarawet Village of North Minahasa Regency 北米纳哈萨县Sarawet村沿海社区对气候变化的感知与适应

Jurnal Wasian Pub Date : 2019-12-30 DOI: 10.20886/jwas.v6i2.4728

I. Yuliantoro, N. Wahyuni

{"title":"Perception and Adaptation of Coastal Community Toward Climate Change at Sarawet Village of North Minahasa Regency","authors":"I. Yuliantoro, N. Wahyuni","doi":"10.20886/jwas.v6i2.4728","DOIUrl":"https://doi.org/10.20886/jwas.v6i2.4728","url":null,"abstract":"Climate change is difficult phenomenon to be understood by ordinary community. Whereas perception and knowledge of climate change will influence mitigation and adaptation, which can decrease risks of climate change impact. The research aims to find out community’s perception about climate change and adaptation efforts which have been done by communities of Sarawet Village at North Minahasa Regency. Perception and adaptation data were obtained through interview and focus group discussion. The result shows that 96.67 % of community has experienced the symptoms and impacts of climate change, which perceived as extreme season or the shift of rain and drought season. The most perceived climate change impacts are crop failure, less income from agriculture and drought. This perception indicates a lack of environmental and forestry information . The adaptation efforts that have been done by the community include change plant species that need lack water as well as fulfill needs of clean water from the central well and utilize springs from upstream. Based on SWOT analysis An appropriate strategy to encourage adaptation in Sarawet village is done through increasing the adaptive capacity of the community Keywords : perception, climate change, SWOT, adaptive capacity","PeriodicalId":31303,"journal":{"name":"Jurnal Wasian","volume":"6 1","pages":"89-99"},"PeriodicalIF":0.0,"publicationDate":"2019-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41477110","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Viability of Penicillium Citrinum on Different Carrier Media as Organic Fertilizer 柠檬酸青霉在不同有机肥载体上的生存力研究

Jurnal Wasian Pub Date : 2019-12-30 DOI: 10.20886/jwas.v6i2.5366

S. Hakim, T. Yuwati, Dony Rachmandi, P. B. Santosa, A. Ardhana, D. Alimah

{"title":"Viability of Penicillium Citrinum on Different Carrier Media as Organic Fertilizer","authors":"S. Hakim, T. Yuwati, Dony Rachmandi, P. B. Santosa, A. Ardhana, D. Alimah","doi":"10.20886/jwas.v6i2.5366","DOIUrl":"https://doi.org/10.20886/jwas.v6i2.5366","url":null,"abstract":"The use of bio-fertilizer is increasing along with the awareness of eco-friendly life style. The use of bio-fertilizer give several advantages such as enhancing plant growth, provide plant nutritions, easily absorbed by plant and environmental friendly. Endophytic fungi can be used as biological fertilizers.In this study, endophytic fungi Penicillium citrinum isolate P3.10 were used as a main ingredient for biological fertilizers. This study aims to investigate: (a) the most effective carrier material for biological fertilizers made from endophytic fungi P. citrinum and (b) maximum shelf-life of biofertilizers. Three carrier materials were tested to find out the best carrier as biological fertilizer carriers. Factorial Completely Randomized Design with two factors used in this study with the first factor is the type of carrier material (rice bran, saw dust, and peat soil), and the second factor is storage time (14, 28, 42, 56, dan 70 days).The result of the study and consideration based on the standards of biological fertilizer regulation of the Minister of Agriculture Number 70 / Permentan / SR.140 / 19/2011) showed that of the three tested carriers (rice bran, sawdust, and peat), peat showed the best performance as biofertilizer carrier with the recommend maximum shelf-life is 28 days (5,62 x 10 5 cfu/gram) due to its C/N ratio value and its viability to maintain the number of viable fungi. Keywords: formulation, biofertilizer, endophytic fungi, peat soil, shelf-life","PeriodicalId":31303,"journal":{"name":"Jurnal Wasian","volume":"6 1","pages":"69-76"},"PeriodicalIF":0.0,"publicationDate":"2019-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47952060","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Perception of Local Community of Pinogu Toward Forest and Its Utilization 皮诺古当地社区对森林的认知及其利用

Jurnal Wasian Pub Date : 2019-12-30 DOI: 10.20886/jwas.v6i2.5251

D. Arini, I. Yuliantoro

引用次数: 0

Diameter Increment of Remnant Stands in Logged-Over Forest in Papua 巴布亚砍伐森林中剩余林分的直径增量

Jurnal Wasian Pub Date : 2019-12-30 DOI: 10.20886/jwas.v6i2.4620

Relawan Kuswandi, J. Nugroho

{"title":"Diameter Increment of Remnant Stands in Logged-Over Forest in Papua","authors":"Relawan Kuswandi, J. Nugroho","doi":"10.20886/jwas.v6i2.4620","DOIUrl":"https://doi.org/10.20886/jwas.v6i2.4620","url":null,"abstract":"Diameter increment is an important information used to set silvicultural prescription that plays a crucial role in sustainable forest management. Therefor e , this research was aimed to analyze diameter increment of remnant stands in selectively logged forest in Papua. The dataset was acquired from permanent sample plots in logging concessions of PT Tunas Timber Lestari (TTL), PT Wapoga Mutiara Timber (WMT) dan PT Manokwari Mandiri Lestari (MML). The diameter measurements were conducted annually for 6 – 9 years on three 1 ha permanent plots. Diameter increment was calculated by measuring a gap between trees diameter in year t+1 and year t. The results showed that the average diameter increment of commercial species groups in those areas were 0.56 cm/ yr , 0.59 cm/ yr and 0.65 cm/ yr , respectively. These increments were smaller than the increment assumption of Indonesian Selective Logging (TPTI) i.e. 1 .00 cm/yr. T he diameter increment distribution based on diameter classes showed different patterns among sites. T he diameter increment distribution in PT MML and WMT increased with the increasing diameter, otherwise those in PT TTL tend to decrease with the increasing diameter class. Keywords: logged-over forest, species group, Papua, diameter increment","PeriodicalId":31303,"journal":{"name":"Jurnal Wasian","volume":"6 1","pages":"125-133"},"PeriodicalIF":0.0,"publicationDate":"2019-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48031435","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Habitat Characteristics and Population of Javan Langur (Trachypithecus Auratus E. Geoffroy Saint-Hilaire, 1812) In Leuweung Sancang Nature Reserve, Garut, West Java 西爪哇加鲁特Leuweung Sancang自然保护区Javan Langur（Trachypithecus Auratus E.Geoffroy Saint-Hilaire，1812）的生境特征和种群

Jurnal Wasian Pub Date : 2019-12-30 DOI: 10.20886/jwas.v6i2.4816

A. Mustari, Achmad Fajar Pasaribu

{"title":"Habitat Characteristics and Population of Javan Langur (Trachypithecus Auratus E. Geoffroy Saint-Hilaire, 1812) In Leuweung Sancang Nature Reserve, Garut, West Java","authors":"A. Mustari, Achmad Fajar Pasaribu","doi":"10.20886/jwas.v6i2.4816","DOIUrl":"https://doi.org/10.20886/jwas.v6i2.4816","url":null,"abstract":"This study aimed to determine habitat c haracteristics, food plants, population size , and distribution of J avan langur in Leuweung Sancang Nature Reserve. This study was conducted from February to April in Leuweung Sancang Nature Reserve. Composition and structure of vegetation were determined using vegetation analysis . P opulation and distribution of the javan langur were identified using concentration count method. A total of 110 plant species recorded in the javan langur’s habitat . Ketapang (Terminalia catappa ) was the dominant species in the study area composing 41,71% of the IVI. The Javan langur feed on at least 17 plant species. The plant parts eaten by the Javan langur included leaves, buds, shoots, flowers and fruits. A total of 19 javan langur groups were encountered along the beach forest of the nature reserve. Number of individual at each of the group varied ranging from 7 to 17 individual s. The population size was 227 individuals and t he population density was 0. 1 5 individuals per hectare . The javan langur’s age structure of adult : young : juvenile was 43 %: 27 %: 30 % indicating that the population was dominated by adult individuals and t he sex ratio of male:female was 1:3. Keywords: food plants, habitat, population, Trachypithecus auratus","PeriodicalId":31303,"journal":{"name":"Jurnal Wasian","volume":"6 1","pages":"77-88"},"PeriodicalIF":0.0,"publicationDate":"2019-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49628608","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Community Perceptions of Impacts of Ecotourism and Its Implications on Ecotourism Development in the Balikpapan Bay, East Kalimantan 东加里曼丹巴里克帕潘湾生态旅游影响的社区认知及其对生态旅游发展的影响

Jurnal Wasian Pub Date : 2019-06-29 DOI: 10.20886/JWAS.V6I1.4666

T. Sayektiningsih, A. Nugroho, I. Yassir, Ulfah Karmila Sari, Amir Ma’ruf, Mukhlisi Mukhlisi, Adi Surya, S. Suryanto

{"title":"Community Perceptions of Impacts of Ecotourism and Its Implications on Ecotourism Development in the Balikpapan Bay, East Kalimantan","authors":"T. Sayektiningsih, A. Nugroho, I. Yassir, Ulfah Karmila Sari, Amir Ma’ruf, Mukhlisi Mukhlisi, Adi Surya, S. Suryanto","doi":"10.20886/JWAS.V6I1.4666","DOIUrl":"https://doi.org/10.20886/JWAS.V6I1.4666","url":null,"abstract":"Understanding local community perceptions towards ecotourism is important since community has a crucial role in determining sustainable ecotourism. This research aimed to identify community perceptions towards impacts of ecotourism as well as to analyse the relationships between perception and ecotourism responsible behaviour. Other goal of this study was to analyse the relationship between ecotourism responsible behaviour and social factors. Data was collected in 4 villages adjacent to the Balikpapan bay, namely Maridan, Telemow, Binuang, and Mentawir. We used the quota technique to sample respondents. For each village, we took 40 respondents randomly. Data was then analysed using descriptive statistics, Spearman correlation, and Kruskal Wallis test. We found that community around the Balikpapan Bay thought that ecoto u rism was able to bring positive impacts for village and community. A Kruskal Wallis test revealed that there was no significant difference regarding perceptions among 4 villages. We found that there was a correlation between ecotourism responsible behaviour and gender. Implications of community’s perceptions to ecotourism development around the Balikpapan bay were then discussed. Keywords: ecotourism, perception, benefits, behaviour towards ecotourism, Balikpapan Bay","PeriodicalId":31303,"journal":{"name":"Jurnal Wasian","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45494615","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Timber Volume Estimation Model for Commercial Tree Species in the Logging Area Concession of PT. Tunas Timber Lestari in Boven Digul, Papua 巴布亚Boven Digul金枪鱼木材有限公司采伐区特许商业树种材料量估算模型

Jurnal Wasian Pub Date : 2019-06-29 DOI: 10.20886/JWAS.V6I1.4714

F. J. Hutapea, Relawan Kuswandi

{"title":"Timber Volume Estimation Model for Commercial Tree Species in the Logging Area Concession of PT. Tunas Timber Lestari in Boven Digul, Papua","authors":"F. J. Hutapea, Relawan Kuswandi","doi":"10.20886/JWAS.V6I1.4714","DOIUrl":"https://doi.org/10.20886/JWAS.V6I1.4714","url":null,"abstract":"The volume estimation model is one of the most important components in developing sustainable forest management. Nowadays, various models for various types of forests in Indonesia have developed. Nevertheless, these models do not represent the type of forest ecosystem in Papua. Therefore, numerous studies are still needed to develop volume estimation model for various types of forests in Papua. This study was aimed to develop timber volume estimation model for commercial tree species in logging concession of PT. Tunas Timber Lestari in Sesnukt District, Boven Digul Regency, Papua Province. A total of 164 trees were chosen to develop the model and 50 trees for model validation. The result showed that diameter did not have a strong correlation with tree height. Therefore, the m odel should be developed using the combination of diameter and tree height. The best model in the development stage was selected based on the value of coeffi cient of determination (R 2 ) , standard error of the estimate (SEE), and F test . The best model in the validation stage was selected based on the value of bias (e), root mean square errors (RMSE), average deviation (SR), aggregative deviation (SA) , and χ 2 test . . The best model for timber volume estimation in PT. Tunas Timber Lestari are V = 0.00007594 D 1 . 978 H 0 . 923 . Keywords: commercial tree species, diameter, timber volume estimation, tree height, volume","PeriodicalId":31303,"journal":{"name":"Jurnal Wasian","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46714182","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0