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The construction of environmental leadership with local community behavior in natural resource conservation based on the Mamar system in West Timor, East Nusa Tenggara

Lewoleba Gregorius Goran, Widianarko Budi, Dewi Trihoni Nalesti

Infrastruktura i Ekologia Terenów Wiejskich

2023

nr I/1

133--153

Mamar is an artificial oasis that provides a base for natural resource conservation in West Timor. The uniqueness of Mamar is its application in arid natural environments through a sustainable local leadership system, and it has a positive impact ecologically, economically, and socially. However, the Mamar system needs to receive more attention from the government in conserving natural resources. Such studies like Mamar's have been conducted elsewhere in Indonesia under different names, but they were applied in areas with wet and relatively fertile climates. Also, research on Mamar has been carried out by several parties related to the function of Mamar economically and the condition and structure of Mamar physically and biologically. However, research on Mamar related to the Construction of Environmental Leadership with local community behavior in Mamar based natural resource conservation has never been done. This research aims to analyze the construction of environmental leadership in natural resource conservation practices based on the Mamar system. This research was conducted through qualitative methods and critical interpretive approaches, with data collection techniques in the form of observation and interviews. The results indicate that Mamar based natural resource conservation in West Timor has positively and significantly impacted social, economic, and ecological aspects and has lasted for hundreds of years since the 17th century. It is done through the mechanism of Environmental Leadership Control through a strong, effective, and sustainable Local Leadership Role in Amarasi West Timor, with Local Leaders called Atupas, Mataf, Tobe, and Temukung.

Phytoremediation of Lead Contaminated Soil Using Croton (Cordiaeumvariegatum) Plants

Herlina Lina, Widianarko Budi, Purnaweni Hartuti, Sudarno Sudarno, Sunoko Henna Rya

Journal of Ecological Engineering

2020

Vol. 21, nr 5

107--113

The lead contamination of the environment affects the life of organisms, as the quality of the environment influences and determines the quality of living things, both plants and animals. Therefore, remediations need to be taken so that the polluted land could be repurposed for various activities safely. Phytoremediation is a method that employs plants to move, detach, or stabilize pollutants in the form of eitherorganic or inorganic compounds. In this study, the Croton (Codiaeum varigatum) plant was used as a phytoremediator planted in pots. Three pots were observed: 500 mg of Pb (NO3)2 was added to the first (T1) pot, 750 mg (T2) of Pb (NO3)2 was added up to the second (T2) pot, and no addition to the third (T0) pot. The parameters analyzed included plant biomass, the Pb content in plants, bioaccumulation factors, translocation factors, metal tolerance index, and photosynthetic pigment content. The results showed that Pb affected all of the analyzed parameters. Pb causes a decrease in the plant biomass and a downturn in chlorophyll a and b. The Pb accumulation in root > stem > leaf. The BAF value <1, the TF value <1 and the MTI value ranged 89.73–82.80%.