STRATEGI PENGELOLAAN LINGKUNGAN DI DANAU BUYAN KABUPATEN BULELENG

This research aimed to determine the potential of ecotourism that can be developed and to analyze visitor perceptions and to formulate environmental management strategies for development of ecotourism in TWA Danau Buyan. The method used in this research was descriptive qualitative with the techniques, namely observation, interviews and questionnaires. The result of this indicate that the potential tourist attractions in TWA Lake Buyan area already exist including jungle tracking, camping, cannoing, selfie spot, outbond locations that have paid attention to environmental issues by involving the community. The perceptions of visitors were based on the function of the area, management policies, tourism activities, facilities and infrastructure, and on the willingness to stay generally quite good. Based on the IE table, the management strategy matrix was ??in quadrant V (Five) or in the hold and maintain and survival phase. These strategies included: a) Developing the unique potential in TWA Lake Buyan both natural resource potentials such as biodiversity (flora and fauna), landscape beauty, and community socio-cultural potential that could be developed and packaged into ecotourism package, b) Increasing support from the local government and participation of local communities to optimize the quality improvement of ODTW TWA Danau Buyan, both facilities and infrastructure tourism, public facilities, human resources, and increasing the promotion of cultural and spiritual tourism to foreign tourist, c) Increasing supervision in field, increasing guidance and counseling on the benefits of tourist attraction to the community, as well as inviting the public and tourists to actively participated in preserving the forest and existing tourism objects (environmentally friendly tourism awareness activities), d) Build cooperation and synergy with competent stakeholders, including the Tourism Office, the KSDA unit, the Agriculture Office, Academics, Non-Governmental Organization, local community organizations, and open for opportunities to do collaboration with the surrounding community. Keywords: Strategy Management, Ecotourism, Nature Tourism Park, Buyan Lake

ESTIMASI POTENSI KARBON SEDIMEN MANGROVE PADA HUTAN ALAM DAN HUTAN REHABILITASI DI TAMAN HUTAN RAYA NGURAH RAI BALI

Sediments play an important role in coastal ecosystems. Apart from being a growing medium, sediment is also a place for accumulation and storage of various components including carbon. Ngurah Rai Forest Park is the largest mangrove in Bali with a large potential for sediment carbon stocks. To determine the carbon storage of mangrove sediments in natural forest and rehabilitation forest and the relationship between diameter size and vegetation type to sediment carbon in two forest types, a study was conducted using purposive sampling method based on canopy density level with three repetitions with a plot size of 10 mx. 10 meters. Sampling was divided into three depths, namely 0-30 cm, 31-60 cm and 61-100 cm. The total carbon content of mangrove sediments in natural forest is 363,491.17 Mg C or equivalent to 363,491.17 tons C and rehabilitation forest is 160,401.33 Mg C or equivalent to 160,401.33 tons C. The total sediment carbon content in Ngurah Rai Forest Park is 523,892.50 Mg C or equivalent to 523,892.50 tons C. Tree diameter had no significant effect on sediment carbon content, while vegetation type significantly affected sediment carbon content. Sonneratia alba had a significant negative effect on natural forests, while Rhizophora stylosa had a significant positive effect on rehabilitation forests. The results of the study suggest that it is necessary to maintain the preservation of mangroves and carry out rehabilitation in damaged areas. To increase the carbon content of sediments in mangrove forests, consider selecting the type of vegetation Rhizophora stylosa for the implementation of rehabilitation activities, because the type of Rhizophora stylosa makes a positive contribution to increasing the carbon content of sediments, with a note that the rehabilitation location is suitable for Rhizoporaceae species. Keywords: Mangrove; Nature Forest; Rehabilitation; Sediment.

ESTIMASI KANDUNGAN KARBON ATAS PERMUKAAN TANAH PADA HUTAN ALAM DAN HUTAN REHABILITASI MANGROVE TAMAN HUTAN RAYA NGURAH RAI BALI

Mangroves are ecosystems that play an important role in absorbing and storing carbon from the air, one of which is in the form of mangrove vegetation biomass. As the largest mangrove area in Bali which consists of natural and rehabilitation vegetation, Taman Hutan Raya Ngurah Rai has a large potential for high carbon content. To determine the carbon potential of mangroves in natural and rehabilitation forests, a research was conducted using the purposive sampling method based on the canopy density level which was divided into 5 categories, namely very rare, rare, moderate, dense, very dense. Based on the results of measurements and calculations, the total carbon content of Ngurah Rai Grand Forest Park is 86.521,74 tons C, consisting of natural forest content 66.857,53 tons C and rehabilitation forest 19.664,21 tons C. Above ground carbon per hectare in natural forest was not significantly different from the above ground carbon per hectare in rehabilitation forest, these results indicate that the carbon content per hectare of rehabilitation forest over 20 years old is almost close to the carbon content per hectare in natural forest. The diameter of trees and vegetation types did not significantly affect the carbon content of mangroves, these results indicate that the increase in carbon stocks in each type of vegetation in natural and rehabilitation forests is in line with diameter growth. Keywords: Biomass; Density; Diameter; Canopy.

PENILAIAN STATUS DOMAIN SUMBER DAYA IKAN LEMURU DENGAN PENDEKATAN EKOSISTEM YANG DIDARATKAN DI PPI KEDONGANAN, BALI

PPI Kedonganan is a fish landing base located in Kedonganan Village, Kuta District, Badung Regency. One of the fish commodities that landed at PPI Kedonganan is Lemuru Fish (Sardinella lemuru). The high rate of catching Lemuru must be balanced with proper management so that Lemuru Fish Resources remain sustainable. This study was conducted to determine the status of the utilization of Lemuru fish resources. The study was conducted from January 2021 to March 2021. Data collection was carried out by observation and interviews. Data analysis of each indicator was carried out using a multi-criteria analysis approach with composite index assessment and visualization by flag model. Indicators were observed the trends of fish size, the proportion of juvenile fish were caught, the species composition, range collapse of fish resources, Endangered, Threatened, and Protected species. The status assessment of the Lemuru resource domain which landed at PPI Kedonganan is in the good category with a composite value of 66.7. Results of the trend indicators of fish size is relatively fixed, the proportion of fish juvenile caught about 90%, the composition of species caught was 100% of the target fish i.e, lemuru that caught by using gill net, range collapse of fish resources as much as 57% of fishermen expressed relatively fixed in looking for fishing grounds, and ETP species not found. Keywords: EAFM; Lemuru Fish; Fisheries Management; PPI Kedonganan.

PARTISIPASI MASYARAKAT DALAM PENGELOLAAN SAMPAH PANTAI TELUK PENYU CILACAP

The problem of waste is a challenge faced by most countries in the world. The problem of waste will continue if not addressed and will pollute the environment and negatively impact the tourist attraction area. For that, there needs to be real action to overcome the problem of Cilacap Turtle Bay beach waste. The purpose of this study is to find out the influence of variable understanding, will and income on community participation in waste management. Respondents are people who live on the coast of Turtle Bay as many as 100 people. The data was analyzed using Partial Least Square by measuring the outer model and the inner model. The results showed that the variables of understanding, willingness and income positively affect community participation in turtle bay waste management. Government support is the motivation that people expect in sustainable waste management. Keywords: participation; waste management; understanding; willingness; income.

PENILAIAN RISIKO KESEHATAN LINGKUNGAN KECAMATAN ABIANSEMAL, KABUPATEN BADUNG

Environment, a variable that often gets special attention in assessing public health and environmental health, is an effort to prevent disease. Environmental Health Risk Assessment (EHRA) is a comprehensive study about sanitation facilities' conditions and risky behaviors on public health. Abiansemal District is one of the tourist destinations that has a very complex impact, especially on environmental health aspects. Behavior is a highly potential factor for health status, clean and healthy behavior is strongly influenced by the availability of sanitation facilities in order to control physical environmental factors that can harm health. This study determines the Health Risk Index and obtains an overview of the sanitation facilities condition and community behavior that has a risk for environmental health in Abiansemal District, Badung Regency. This study used stratified random sampling using a sample in the Abiansemal sub-district which has been determined as the target study area. Households to be visited in each village were selected randomly by stratified random sampling. After finding the first household visited, an interview was conducted according to the available questionnaire and after it was completed it was forwarded to neighbors until it found 40 houses per village. SPSS 20.0 is used for the data analysis. The description of sanitation facilities and community behavior that poses a risk to health in strata 1 has the main problem in domestic waste with the highest score of 36, while strata 2 has the main problem in solid waste with a score of 43 and strata 3 has the main problem in domestic wastewater with a score of 45. Analysis results of the sanitation risk index for the category of low risk/less risky area for strata 1 (1 village), the category of high-risk area for Strata 2 (11 villages), and the category of moderate risk area is in Strata 3 (6 villages). The high-risk area is found in Strata 2 (11 villages). Keywords: EHRA; Environmental health; Abiansemal; Badung.

MICROBIAL ENRICHMENT PROCESS IN THE ANODE OF MICROBIAL FUEL CELL SYSTEM USING TOFU WASTEWATER (TWW) ANAEROBIC SLUDGE

Microbial fuel cell consisting two main components which are anode and cathode materials. In the microbial fuel cell, both anode and cathode compartments are separated with a separator. Anode generates the protons and electrons while cathode converts protons into water with the presence electrons and oxygen. During the Microbial fuel cell operation, the performance of anode is very crucial due to it provides the protons and electrons. Hence, the high efficiency microbial fuel cell is very related with the high anode performance. This work addressed to the enrichment process of electroactive bacteria (EAB) in anode of microbial fuel cell. In this work, some parameters such as current generations, , and pH changes were used to assess the enrichment process of EAB was reached. In addition, the presence of EAB on the anode surface was identified based on the morphology of anode surface. The removal of COD and the pH value were determined by using the American public health analysis method and pH tester, respectively. The morphology of anode surface was analysed by using a scanning electron microscope. Whereas, current generation was tested by using a mustimeter. The removal of COD and final pH were obtained 71.4 % and 5.7, respectively. The optimum current generation was observed 0.19 mA. The surface morphology of anode before enriched with microbes was clear surface, while after enriched with microbes was attached by microbes. The removal of COD, pH changes, current generation and morphology of anode surface could be used to assess the EAB in the anode compartment. Keywords: Microbial fuel cell; anode; cathode; electroactive bacteria; pH changes.

ANALISIS DAYA DUKUNG DAN DAYA TAMPUNG LAHAN PERMUKIMAN KOTA DENPASAR

Denpasar City is the capital city of Bali Province which has a rapid population growth rate every year. Along with the rapid population growth, this has an impact on meeting the needs of housing and other regional service facilities. The increasing number of population automatically causes an increase in the need for housing. Analysis of residential land supporting capacity and supply capability needed to preserve the environment. This research was conducted with a quantitative approach which describes and describes the results in the form of numbers or nominal values by explaining clearly either with the help of pictures, tables, or graphs. The quantitative data described are the population, land area and land capability area to support and accommodate housing as a place to live in Denpasar City. Based on the results of the analysis using the overlapping method and scoring using a GIS application. Denpasar City potential land to be developed as a residential area after being adjusted to the settlement plan in the Denpasar City Spatial Plan is available for 454,73 hectares of the total area of Denpasar City of 12,521 hectares or about 3.63% of land in Denpasar city. The capacity of Denpasar City houses is able to accommodate around 44.736 housing units and 178.943 residents. There are 2 sub-districts that are not able to accommodate the population in 2030, namely South Denpasar and North Denpasar. However, cumulatively, Denpasar City is still able to accommodate population growth in 2030 in obtaining residential land. Keywords: Supporting Capacity and Supply Capability; Residential Land; Denpasar City.

ANALISIS POTENSI SIMPANAN KARBON AGROFORESTRI PERKEBUNAN KOPI ROBUSTA (COFFEA CANEPHORA) DI PEGUNUNGAN ARGOPURO, KABUPATEN BONDOWOSO

Coffee plantation areas have the potential to absorb carbon dioxide in the atmosphere to reduce the greenhouse gas (GHG) emissions. Especially if coffee plantations are developed with forest plants in agroforestry area within forest management patterns. On the other hand, some coffee agroforestry now, are planted with horticultural crops that can reduce carbon sequestration ability to reduce climate change impact. The objectives of the study are to identify the parameters of the abiotic environment and the potential for carbon storage in robusta coffee agroforestry at Argopuro mountains, Bondowoso Regency. Through the calculation of plant biomass and carbon stock, it is potential to approach the amount of carbon uptake in plants to reduce carbon emissions in the atmosphere. Coffee plantation is one area that can increase carbon sequestration in the atmosphere. The results showed that microclimate parameters at robusta coffeeagroforestry at Argopuro mountains in Bondowoso regency i.e. temperature, air humidity, light intensity has average values of 29.2 oC; 54%; and 2166 lux respectively, then an average of soil pH is 6.00. There were some commonly plants founds in robusta coffee plantation i.e mango trees, avocado trees, dadap trees, pine trees, and more banana plants. Total biomass estimation in robusta coffee plantation area is 144,834 tonnes/ha. The identification of carbon stock show that the robusta coffee agroforestry area with ??2000 m2 can contribute to reduce atmospheric carbon emissions by 72.417 tonnes/ha in Argopuro mountains, Maesan District, Bondowoso Regency. Keywords: Argopuro Mountains; Bondowoso; Carbon stock; Coffee agroforestry; Climate Change.

RELATIONSHIP BETWEEN CHLOROPHYLL-A AND SEA SURFACE TEMPERATUR WITH Sardinella lemuru CATCHING IN BALI STRAIT

The Bali Strait is one of Indonesia's territorial waters that have high natural resource potential. The area is only about 2,500 km2 but has a high potential fishing ground. The Bali Strait has unique and dynamic waters that can cause fluctuations in fish production amount each year. The largest type of fish caught in the Bali Strait is lemuru (Sardinella lemuru), a fish found only in the Bali Strait. This fish plays a significant role in the economy of fishers in the Bali Strait. Each year the catch of lemuru has fluctuated, making fishing locations challenging to predict. Sea Surface Temperature (SST) and Chlorophyll-a (Chl-a) are oceanographic parameters that can affect the resources of the ocean. Oceanographic phenomena, such as upwelling, can also influence the condition of fish resources. Therefore, understanding the relationships between these factors is essential in practical fisheries management. Observation of oceanographic factors is very hard with the field observation due to time and cost limitations. The remote sensing technique is an efficient method to determine SST distributions and Chl-a concentrations using satellite imagery. This study analyzes SST and Chl-a concentration in the Bali Strait using the Global Change Observation Mission(GCOM-C) satellite and determines the correlation between Chl-a and SST with a total fish catch(lemuru) during 2019. The results showed the maximum average Chl-a concentration observed on August 1.62 mg/m3 and the lowest concentration observed on January 0.45 mg/m3, the maximum SST on March was 28.12° C, and on August (Dry season) with 22.40° C. The SST variable's influence provides a negative correlation (R = -0.209) with changes in lemuru catch, while the Chl-a parameter has a positive correlation (R = 0.375) with changes in the catch. The pattern of relationship between Chl-a with fish catching had a good relationship than the SST in 2019.Keywords: Bali Strait; Sardinella lemuru; SST; Chl-a.