Efektifitas dari pengelolaan DAS harus memperhatikan respon hidrologi pada setiap pelaksanaannya. Dengan demikian dalam analisis pengelolaan DAS sebaiknya mengggunakan model hidrologi. Penelitian ini memanfaatkan model hidrologi SWAT (Soil and Water Assessment Tool). SWAT merupakan model terdistribusi yang terhubung dengan SIG (Sistem Informasi Geografis) dan mengintegrasikan dengan DSS (Decision Support System). Tujuan penelitian ini adalah: (1) mengidentifikasi sub DAS dan penggunaan lahan yang menyebabkan permasalahan pada DAS Cisadane, dan (2) mengevaluasi implementasi perencanaan pengelolaan DAS Cisadane. Hasil analisis SWAT, ada tiga sub DAS dikategorikan sebagai sub DAS yang berpotensi menyebabkan masalah tata air dan penggunaan lahan pada DAS Cisadane, yaitu sub DAS Cisadane hilir 2, sub DAS Cisadane tengah 2, dan sub DAS Cisadane hulu 8. Sub DAS yang menjadi penyumbang peak flow terbesar adalah sub DAS Cianten hilir 3 dan Sub DAS Cianten hulu 3. Sedangkan sub DAS sebagai penghasil sedimentasi terbesar berturut-turut adalah sub DAS Ciampea, sub DAS Cihideung dan sub DAS Cinangneng. Evaluasi perencanaan pengelolaan DAS dengan penerapan skenario gabungan, untuk kriteria tata air menunjukkan hasil baik, tetapi untuk kriteria penggunaan lahan masih termasuk kriteria buruk. Model SWAT dapat digunakan untuk mengidentifikasi sub DAS dan unit lahan yang berpotensi menyebabkan masalah pada DAS dan mengevaluasi beberapa alternatif perencanaan pengelolaan DAS. Penggunaan model SWAT dapat menentukan perencanaan pengelolaan DAS terbaik.

Untuk merehabilitasi lahan kritis diperlukan bibit yang berkualitas. Salah satu caranya melalui penyediaan bibit bermikoriza. Tusam (Pinus merkusii Jungh. Et de Vriese) merupakan salah satu jenis yang dapat bersimbiosis dengan cendawan ektomikoriza. Penelitian bertujuan untuk mempelajari pengaruh dosis serbuk spora Scleroderma citrinum Persoon dan komposisi media dalam menginfeksi perakaran dan meningkatkan pertumbuhan tusam di persemaian. Rancangan percobaan menggunakan Rancangan Acak Lengkap pola faktorial. Faktor dosis serbuk spora terdiri atas 0; 0,1; 0,2; dan 0,3 gram, sedangkan faktor media terdiri dari subsoil, subsoil : pasir (7:3), dan subsoil : kompos (7:3). Hasil penelitian menunjukkan bahwa dosis 0,1 gram serbuk spora dengan media tanam subsoil dan subsoil : pasir (7:3) telah mampu menginfeksi perakaran bibit tusam yang sangat nyata, dan pengaruhnya sangat nyata terhadap pertumbuhan tinggi, diameter, berat kering total, dan rasio akar-pucuk bibit tusam sampai umur tujuh bulan, tetapi media subsoil : kompos (7:3) yang diberi serbuk spora 0,1; 0,2; maupun 0,3 gram tidak menginfeksi perakaran tusam. Komposisi media subsoil : pasir (7:3) dengan dosis 0,2 gram serbuk spora menghasilkan persen infeksi tertinggi yaitu 77,6%.

Rehabilitation of critical land in Timor Barat should be done with holistic approach considering socio economic and cultural aspect. The problems of forest and land rehabilitation effort in this area are: poverty, less job opportunity, and high dependency on dry farm agriculture and animal husbandry. The rate of critical land in several watershed such as Benain Noelmina in Timor Barat is very high. Therefore, the approach of land rehabilitation should integrated and more specific. This research is intended to gain the information on land rehabilitation alternative through the development of community forest based on mamar system. Methods used on this research were survey on biophysics of mamar and interview with villagers, village administrators, and custom leaders. The results showed that mamar system could be developed as a community forest model to support land rehabilitation program. The benefit of applying this system is that the management of critical land will be based on local inisiative which is suitable with land characteristics, socio culture and indigenous knowledge, therefore it can increase people participation to reach the purpose of forest and land rehabilitation

Water quality and quantity are important factors for water resources evaluation. Water quality and quantity should be measured directly. Unfortunately, some watersheds do not have hydrologic stations. Water quantity can be estimated through modeling. One of the simple models for monthly water potential estimation is Thronthwaite-Mather method. The method is based on water balance in which rainfall as an input, and evapotranspiration and run-off as outputs. Physical soil properties and land cover characteristics especially rootzone are as processors. The aim of this research was to compare between estimation and direct measurement of monthly water potential. The result showed that monthly run-off prediction has high correlation with direct measurement (R2 = 0.77-0.91). In order to get an appropriate result, the method should reconsider about water surplus assumption. The assumption of 50% water surplus for next month will not be suitable for all watersheds. Some watersheds may assume more than 50% water surplus and some other watersheds may assume less than 50%, depending on watershed characteristics, especially on geological formation. In order to get a more accurate result, the direct measurement of run-off should be rechecked

The idea of Central Java governor to establish a botanical garden in Baturaden was approved by Megawati Soekarnoputri as a vice president of the Republic of Indonesia. For this purpose, the Ministry of Forestry provided a 150 ha of production forest land in the southern part of Mount Slamet, through the Ministerial Decree No. 117/Menhut-II/2004 dated April 19, 2004. This area was decided as a special purpose forest (KHDTK) for research, development, and environmental education. The Baturaden Botanical Garden is located in Banyumas District, Central Java Province. The existence of forest as a land use type and land surface cover on mountain slope and watershed area has an important role in hydrological characteristics of such a watershed. The existence of a forest on upper watershed which is generally mountaneous, functions as a recharge area or a head water catchment area. A research on the effect of forest land use change on water yield was conducted on the area of Baturaden Botanical Garden. The aim of this research was to provide the information of water yield as a result of forest land use change in relation to the establishment of Baturaden Botanical Garden. These could be used as a basic consideration for decision maker to value forest services in ecological aspect e.g. water yield. The results showed that the height range of water in the pool was 0-10 cm in August and September, while in other months it was 19-268 cm. Rainfall ranges in August-September and other months were 40-111 mm and 149-832 mm respectively. The soil permeability ranged from medium to very fast (4.46-54.54 cm/hour).

Various experimental testing procedures were undertaken in Indonesia to determine the effectiveness of a patented superficial (envelope) treatment using bifenthrin to protect radiata pine framing material from damage by two species of subterranean termites (Macrotermes gilvus and Coptotermes curvignathus) and one species of drywood termite (Cryptotermes cynocephalus). Lengths of framing material (Pinus radiata sapwood) were commercially treated to the targeted retention of 0.02% m/m of bifenthrin in the outer 2 mm depth penetration zone of the material. The treated and untreated materials were subsequently cut into test specimens and exposed to M. gilvus in the field and a semi-laboratory trial, to C. curvignathus in the laboratory and a semi-laboratory trial and to C. cynocephalus in a laboratory trial. No supplementary treatment was performed on the exposed cut ends of the treated test specimens. The results from the trials clearly demonstrated that the superficial treatment of bifenthrin seemed effective in protecting test specimens of radiata pine framing material from significant damage by Indonesia’s most notorious termite species that often causes serious economic loss to the timbers. Termites were unable to damage any of the bifenthrin-treated surfaces of test specimens. Any observed damage by termites, albeit minor, was in all cases confined to the exposed cut ends of test specimens. In contrast, attack by termites on the untreated control test specimens caused damage of the samples ranging from light to heavy.