Kegiatan pemanenan kayu umumnya menggunakan alat-alat berat yang berdampak pada aspek ekologi dimana terjadi kerusakan pada tanah. Tujuan dari penelitian ini adalah mengetahui dampak pemanenan hutan terhadap sifat biologi tanah dan kandungan karbon di BKPH Sengguruh KPH Malang. Pengambilan contoh tanah dilakukan secara acak, pengambilan contoh cacing secara acak dengan metode hand sorting dan untuk isolasi jamur dan bakteri dengan menggunakan agar cawan. Dari penelitian yang dilakukan diketahui terjadi penurunan kandungan bahan organik tanah pada lahan setalah pemanenan dari kelas agak tinggi menjadi rendah, ditemukan tiga jenis cacing yaitu Pheretima, Pontoscolex, dan Microscolex yang mengalami penurunan kepadatan individu pada pasca pemanenan dari 39,54 individu/m² menjadi 16,87 individu/m2. Jumlah koloni jamur dan bakteri pasca pemanenan mengalami penurunan pada koloni jamur dari 2,54 x 104 CFU/ml menjadi 0,88 x 104 CFU/ml dan pada koloni bakteri dari 22,58 x 105 CFU/ml menjadi 17,6 x 105  CFU/ml. Hasil perhitungan estimasi karbon ini diharapkan dapat berfungsi sebagai dasar untuk menghitung estimasi karbon dalam Vegetasi Hutan Jati dalam Skala Nasional.

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Forests are natural resources that have enormous benefits for the continuity of human life for now and in the future. The community around the forest has a big role in determining the sustainability of the forest because all community activities related to meeting the needs of daily life are very dependent on the existence of the forest. The people's behavior and actions are closely related to the community's perception of the forest. Communities in treating forests are also influenced by their experience and knowledge. Educational Forests or Special Purpose Forest Areas (KHdTK) are areas designated by the government for forestry research and development. University of Muhammadiyah Malang was appointed as the manager of Special Purpose Forest Areas (KHdTK) printed 43A, 44I, 44K-1, 44K-2, and 44L of Kedung Rejo RPH BKPH Pujon KPH Malang where the area is included in the status of production forest area and protected forest. This study aims to determine the perceptions of the surrounding community towards the plan to manage forest areas with specific objectives of UMM in plots 43A, 44I, 44K-1, 44K-2, and 44L, to determine the behavior of surrounding communities towards the plan to manage forest areas with UMM specific objectives in 43A plots, 44I, 44K-1, 44K-2, and 44L. The results of this study indicate that public perceptions of the KHdTK strategic plan by UMM were very well received. There is an inappropriate behavior of the community, namely the farming community in protected forest in 43A, but with prior approval from Perhutani, the behavior in managing the forest always considers the sustainability of the forest and the community always respects the applicable regulations, even though there is behavior that does not comply with the law but the community do that with the approval of Perhutani. The forest is the economic foundation of the surrounding community. In the future, UMM as the manager must be able to work together with the community and restore 43A plots according to their function, namely protected forests and rearranging farmers in KHdTK.

Indonesia is a country with abundant natural resources, including those with enough potential, namely the mining sand industry. Mining on a large scale is good for economic growth, but vice versa on the environmental impacts caused. Environmental damage due to exploitation also occurred in Brumbung village, Kediri district. Environmental damage caused by existing sand mining creates problems that must be claimed by all parties. This paper examines how the impact caused by sand mining activities on the surrounding environment. This type of research is descriptive-qualitative, where the research process and understanding are based on the methodology that investigates a phenomenon. To study this problem, observations and questions and answers were made to the miners, the surrounding community and also the relevant offices. The observed location is around the Brantas River where there are sand mining activities in Brumbung Village, Kepung Subdistrict, Kediri District. research in the area is motivated by the phenomenon of the large number of illegal sand mining in the Brantas river, especially in the self-inflated village, which has many pros and cons in the surrounding community. The environment itself is all things, conditions, conditions and influences that are in the space we occupy and affect the things that live, including human life. Population growth has increased the need for clothing, food, shelter, clean water and energy. This results in higher exploitation of natural resources and tends to neglect environmental aspects. Therefore there is a need for research on the study of environmental impacts, both physical and socio-economic activities of sand mining in the berumbung village, in order to obtain an overview of the environmental impacts that occur or will occur. Later this research is to be taken into consideration in making policies related to the problem of sand mining.

Physical Characteristics and Durability of Cemara Gunung Wood (Casuarina junghuniana) in the Mt. Bromo Probolinggo. The purpose of this study is to find out the physical characteristics of Cemara Gunung wood and to know the durability of Cemara Gunung wood toward termite. The using methods knew the water content, density, and the development of wood thickness. Meanwhile, the selecting of wood durability test without the picking of using soil termites (Macrotermes gilvus) against the three wood samples by using (SNI) 01-7207-2014 regarding the durability of wood test towards wood-destroying organisms. The deriving results showed that the moisture content of the sapwood portion was more significant than the heartwood, based upon the highest density test on the heartwood, which was 1.24 g/cm3, the density of sapwood I and sapwood II was almost equal to 0.81-0, 82g/cm3. The higher the density value, the stronger the wood. The full development is directly proportional to density, the total development value of the two treatments is not too high due to hard Cemara Gunung wood. Based on the termite test showed the average weight reduction in the wood core test sample <3.52% (very resistant) class I. For testing sapwood, I and sapwood II (preservative) were not much different because it was included in the privileged class (3, 52-7,50) (class II). From the three trials of termite in bottles, the 15-day test (the bottle I) was the most effective followed by bottle II and bottle III.