TNGM melakukan restorasi pasca letusan dengan membuat demonstrasi plot (demplot) restorasi menggunakan jenis tanaman puspa (Schima wallichii), salam (Syzygium polyanthum), dan gayam (Inocarpus edulis) sebagai tanaman inti restorasi. Di saat yang sama, jenis asing Acacia deccurens yang muncul sejak erupsi tahun 2006 mendominasi dan merubah struktur serta komposisi jenis yang ada di kawasan pasca erupsi tahun 2010. Keberadaan A. decurrens yang melimpah dalam demplot diperkirakan mengganggu pertumbuhan tanaman inti restorasi terutama dari penutupan tajuknya. Penelitian ini bertujuan mengetahui karakteristik pertumbuhan riap pohon A. decurrens pasca erupsi dan pengaruh naungan tajuk A. decurrens terhadap laju pertumbuhan tanaman restorasi. Demplot dalam penelitian ini menggunakan Rancangan Blok Tidak Lengkap (Incomplete Block Design) dengan total sembilan blok dan masing-masing blok terdiri tiga plot tanaman berbeda, sedang jarak tanam dibuat 4 m x 5 m. Data yang diambil ialah diameter A. decurrens pada berbagai kriteria diameter untuk memperoleh riap pertumbuhan. Data lain yang diukur adalah tinggi dan diameter tanaman restorasipada kondisi ternaung >60% dan tidak ternaung <60%. Data yang diperoleh dianalisis R-statistik menggunakan Wilcoxon-paired test untuk mengetahui pengaruh naungan A. decurrens terhadap pertumbuhan tanaman restorasi. Hasil pengukuran dan analisis menunjukkan bahwa riap rata-rata diameter A. decurrens di dalam demplot sebesar 1,66 cm/tahun. Pada kelas diameter pohon <3,00 cm dan >10,00 cm mengalami perubahan yang cepat dibanding kelas diameter yang lain. Analisis wilcoxon-paired test menunjukkan bahwa tanaman gayam pada pertumbuhan tinggi dan diameter dipengaruhi oleh kondisi naungan. Jenis puspa pertambahan tinggi tidak dipengaruhi oleh kondisi naungan, sedangkan pada pertambahan diameter kondisi naungan memiliki pengaruh. Jenis salam pada kondisi naungan >60% maupun <60% tidak berpengaruh terhadap pertambahan tinggi maupun diameter jenis salam.
This research will produce a forest management model that can increase food reserves and the competitiveness of agricultural products from the use of forest land under stands, as an effort to increase food security. The research will be conducted in the production forest area of The State Forestry Public Company (Perhutani) BKPH Pujon KPH Malang Unit II, East Java from September 2020 to February 2021. The method of developing a management model is based on the level of land development. The analysis uses the Structural Equation Model (SEM) model with the help of the WarpPLS program (Partial Least Square development) which is able to accommodate reflective and formative indicators to test the effect between variables. Land use under stands carried out in the agroforestry model provides economic and environmental benefits, therefore, it was to be able to maintain forest sustainability. Profits from agroforestry on land under stands with intercropping of seasonal crops of vegetables and pulses B/C ratio = 1.77.
The transfer of mangrove forest into ponds of the silvofishery system becomes one of the solutions in managing the environmental impact. Many areas that have succeeded in developing and highly relevant are applied in other areas such as the area of ponds located in Budeng Village, Jembrana regency, Bali which began to be abandoned threatening to decrease the quality of the environment. The purpose of this research is to study the development of silvofishery system in Budeng village mangrove area.The study was conducted during January - February 2017. The method of plotting plot with combination of stripping path was used to obtain the biotic and abiotic environment of mangrove. Data analysis with qualitative descriptive method according to land criteria for silvofishery development.Biotic and abiotic mangrove environment parameters obtained by pond location in Budeng Village were matched with development table for silvofishery system recommended for silvofishery area. However, it is necessary to stage the addition of mangrove vegetation stand before the silvofishery system is applied because only the vegetation density factor is lacking.
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