Mining activities generally use large tracts of land, utilize non-renewable resources, produce a lot of waste, and make land degraded and unproductive. This happened on one of the former sand mining areas in Cimalaka sub-district, Sumedang Regency. Rehabilitation techniques by planting pioneering plants known as swapping are effective techniques. Pioneer plants are plants that start the formation of a habitat. This study aims to obtain information about the structure and composition of pioneering plants in the former sand mining quarry in the Cimalaka sub-district of Sumedang Regency. This research is descriptive, using a survey method with exploration, the research sample is a local pioneering plant that is included in the sampling plot found at the research location. The results showed that the structure at the level of pioneering vegetation in the former sand fields of Cimalaka subdistrict, namely shrubs Eleusine indica L. and Axonopus compressus, seedling plant Calliandra calothyrsus, Gliricidia sepium, Ageratum conyzoides L. Imperata cylindrica L. Saccharum spontaneum L. Vetiveria zizanioides Stapf. dan Coleus soutellarioides L.

Pine sap exploitation is growing because demand for pine sap in Indonesia and the world is increasing. Pine sap productivity is influenced by several factors including tapping, tree species, diameter, and age of stands. In the tapping method, one of them is the renewal time of tapping with the quarre system which is supposed to save the tapping area and get the maximum sap. This paper studies the effect of the renewal of the pine tree tapping at different ages on the productivity of the sap. The proposed method is a survey with a purposive sample determination with 3 different treatments, namely treatment A of the 3-day quarre renewal, treatment B of the 5-day quarre renewal, and treatment of the renewal of the 7-day quarre by administering stimulants. Performed at different age classes IV, VI, and VIII. Field observational data is then processed using a factorial Completely Randomized Plan analysis with two factors. The results showed that the renewal of quarre had a significant effect on the average productivity of pine tree sap at 95% confidence intervals (α = 0.05). The highest average productivity on treatment B renewal of 5 days quarre was 12.17 grams /quarre/day at age classes VI and the lowest average productivity was at treatment C of renewal of 7 days with 4.61 grams /quarre/day at age classes IV.

Javan Langur (Trachypithecus auratus) is one of folivora species by 50 % leaves, 32% fruits, 13% flowers and 7% insects. The most exist of J. langur in Mt. Tampomas Natural Tourism Park in Block of Cilame and Cimeundeum. Mt. Tampomas Natural Tourism Park is one of hiking trails that cause annoyed vegetation as J. Langur’s feed. The objects of studies are to identify of Javan langur’s feed and Importance Value Index of J. Langur’s feed. The method is purposive sampling to know vegetation of feed. The result of species number were 62 species, include 18 species is a J. Langur’s feed. The J. Langur’s feed are kondang (Ficus variegata), nangsi (Villebrunea rubessen), kadoya (Dysoxylum gaudichaudianum), kiara (Fics altisima), kitambaga (Eugenia cuprea), gadog (Bischofia javanica), hamirung (Vernonia arborea), kibanen (Cryteronia paniculata), huru (Machilus rimota), afrika (Maesopsis eminii), putat (Bringtonia acutangular), sampang (Evodia latifolia), pisitan monyet (Glianthus populacus), kilalayu (Lepisanthes tetraphylla), kihuni (Antidesma bunius), hantap (Sterculia coccinea) dan saninten (Castanopsis argentea). Dominance of Javan Langur feed is kadoya (Dysoxylum gaudichaudianum), kitambaga (Eugenia cuprea), dan huru (Machilus rimota). This mean of habitat condition is available feed to J. langur existing.

In the recent years, there is a significant increase on economic value of coffee as trade commodity. On that note, the most frequently used cultivation practices for coffee in Indonesia is coffee agroforestry system in private forest. However, there are still some constraints in the system development due to the traditional farmer limited knowledge of coffee cultivation practices. In this study we conducted preliminary observations on the coffee cultivation practices used by the traditional farmers to determine the steps needed to improve the coffee quality and sustainability. We study the effect of plant-spacing and shading on the growth of juvenile plant of coffee (Coffea arabica Lin.) from Sigarar utang variety. The observation was carried out in private forest of Cimarias village Sumedang district for 1 (one) month. We used the combination of 2,5m x 2,5m and 3m x 3m for plant-spacing with kayu afrika (Meisopsis eminii Engl.) as shade and without shade. This experiment used Completely Randomized Design experiment with 10 replication for each treatment, with juvenile height (cm), stem diameter (mm), and the quantity of productive primary branches as data. Then data were analyzed using Anova, Duncan’s Multiple Range Test (DMRT) 0,05, and Pearson Correlation. From the result, the best growth of juvenile plant of coffee tree was showed on 3m x 3m spacing with shade. However, the growth shown has not reached the potential of the coffee from Sigarar utang variety as supposed to in accordance with the environmental condition of the crop. This analysis also supports the prediction of low-productivity because there is positive correlation between juvenile height and the quantity of primary branches, and between stem diameter and the quantity of primary branches.

Riparian ecosystems have a protective function of watersheds from pollution. One important component in riparian ecosystem is the presence of phytoremediation plants, which can degrade contamination content. This research is intended to identify the presence of undergrowth that functions as phytoremediation in Bojongsoang District which is one of the areas around the heavily polluted Citarum watershed zone[1]. The method used in this research is vegetation analysis using the quadrant method with 1x1 m2 plot size. Determination of sampling points used purposive sampling method. The results of the study found that the undergrowth as a potential phytoremediation included rumput teki (Cyperus rotundus), Beluntas (Pluchea indica), Alang-alang (Imperata cylindrica), Jejarongan (Chloris barbata), rumput gajah (Cyperus rotundus), and bayam duri (Amaranthus spinosus). Rumput teki (Cyperus rotundus) is phyto-extractions in mercury-contaminated soils and accumulators of Sn, Zn, As, Cu, and Pb. Alang-alang (Imperata cylindrical) is a cyanide phytoremediator which is able to extract Zn from contaminated soil, and absorb Pb from contaminated soil. Beluntas is able to accumulate Cu, Fe, Al, Pb and Zn in their roots, leaves and stems, and the leaves that can absorb Cr. Rumput gajah (Cyperus rotundus) are a Cd accumulator. Bayam duri (Amaranthus spinosus) hyperaccumulator against mercury. Studies on the presence of phytoremediation plants can provide preliminary information on the condition of riparian ecosystems in the Citarum watershed.