The aim of this research was to know the level of growth of high and diameter increament of Kenari plant (Canarium ambonensis) for 3.5 years after planting, to know the relationship between pH and Kenari plant growth (C. ambonensis), and to know the relationship between soil moisture with Kenari plant growth (C. ambonensis). Method used was observation and measurement high, diameter, pH and moisture of soil at 100 of Kenari plant. Then, acoounting Current Annual Increatmnet (CAI), Mean Annual Increatmnet (MAI) value and Simple Regretion to show correlation between pH and moisture of soil with growth of Kenari plant. The results of the study showed value of diameter CAI and MAI were 2.26 cm/plant/year and 1.41 cm/plant/year, and value of high CAI and MAI were 1.72 m/plant/year and 0.97 m/plant/year. The relationship of soil pH and humidity with the growth of Kenari (Canarium ambonensis) can contribute very low.

This study aimed to determine changes in litter biomass and the effect of changes in litter biomass on carbon stock changes in Permanent Sample Plots of primary and secondary forest in the Protection Forest of Soya Village, Ambon City, for three years of measurement. This study used a sampling method with harvesting/collection and using laboratory analysis, where the working procedure used the SNI: 7724 guidelines. The data taken includes the water content of litter, total wet weight, dry weight of the sample, and wet weight of the sample to calculate the range of biomass or organic matter and carbon content of litter organic matter. The results showed that the average value of water content in both primary and secondary forests decreased. The depletion degree was higher in the first year than the second and third year. The biomass content of litter in primary forests decreased from year to year for three years of measurement. It causes a decrease in the carbon content in the primary forest. In contrast, the biomass content in secondary forests increased from year to year and increased carbon content from year to year for three years of measurement.

The research about Agathis potential and Etnobotany at Education Forest aimed to get data of Agathis sp potential and etnobotany in the Education Forest, Agriculture Faculty, Pattimura University at Honitetu Village. The method used was quantitative descriptive method and qualitative description. To obtain Agathis potential data, a survey technique was carried out and continued by analyzing the data using the Important Value Index to determine its ecological potential. To determine the economic potential of timber forest products by calculating the volume of wood per hectare and non-timber forest products by calculating the dammar yield obtained. Etnobotany data  were collected through interview techniques which were then analyzed and described. Based on the Importand Value Index (IVI), the ecological potential of Agathis increases its dominance value at a higher growth rate. At the seedling level, Agathis occupies the 9th position, at the stake level occupies the 8th position, at the pole level occupies the 5th position, and at the tree level occupies the 2nd position. The economic potential of Agathis timber forest products based on of the volume of wood is 1.000359 m3 / ha. The economic potential of Agathis non-timber forest products for 40 trees can be obtained 120 - 240 kg per 3 months or Rp 4,800,000 to Rp 9,600,000 per year. Gum resin in daily life is used as a fire starter (“tompong api”), torch (lighting) at nihgt, glue (adhesive) and sold as a source of community income. Effort to maintain its sustainability through “Sasi Gereja” and conducting cultivation using natural extraction by individual communities.

Earthquakes occur due to the sudden release of energy from within the earth causing seismic waves. Earthquake activity with a magnitude ³ 3.5 SR is grouped over 21 years from 2000-2020 to determine the level of seismicity in Seram Island, Buru Island, and surrounding areas. The area of seismic activity is clustered over three blocks. The purpose of this research is to determine the seismicity level and mitigation model in each block in the research area. The results showed that seismic activity in the study area with shallow earthquakes was mostly in Block II as many as 1195 times (40.4%) and Block III as many as 1135 times (38.4%). This block is estimated to have the potential for a tsunami to occur. Mitigation efforts to reduce the risk of earthquakes are by implementing a resilient-elastic building system and the location of settlements from the coastline > 100 m with a topography of at least 25 meters

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