Mudal River ecotourism is located in the Menoreh Hills which is a geological protected area and the area around the springs in the RTRW of Kulon Progo Regency. Since 2015 the Mudal River has been used as a tourist spot in the ecotourism category. These ecotourism activities have increased significantly from year to year when viewed from secondary visitor data for 2015-2018. The study was conducted to determine the value of the carrying capacity of the area and the real carrying capacity which is an effort to prevent damage that occurs in ecotourism areas in protected areas. The method used in this research is a survey and field method. Data on the parameters of carrying capacity and area and real carrying capacity were obtained from the survey and field activities. Based on the results and data processing carried out, it was found that the carrying capacity of the area (DDK) was 701 people/day (consisting of DDK utilization of playing water 637 people/day, DDK utilization of sitting relaxed 57 people/day, and DDK utilization of camping 7 people/day). Meanwhile, the real carrying capacity value is 1151 people/day. The two results obtained are still far above the existing visitors to the Mudal River Ecotourism so the carrying capacity of ecotourism activities is still in accordance with the value of the carrying capacity of the area and the real carrying capacity.

The People's Mining Area is a mining area established by the government as a community managed mining area. The management of the mining by the people of gold mining in Kalirejo Village has largely not yet paid attention to the environmental order. It can lead to landform changes and potentially cause negative impact for the environment. The main purpose of this research is to know the technical feasibility of gold mining people. Methods used in this research are survey and mapping, rating, and descriptive analysis methods. Technical feasibility analysis of gold mining is done based on the priority level of security of mining activities in Kalirejo Village, Kecamatan Kokap. Based on the technical feasibility analysis, it can be concluded that the research location has 2 classes, namely: which declared "feasible" at the gold mining location in Plampang 1 sub-village and "less feasible" at the gold mining location at Plampang 2 and Papak sub-village

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Sustainable agriculture can be used to achieve food security by continuously producing agriculture while taking safety, soil health, and environmental and economic considerations into account. Reduced agricultural land for agricultural production could stifle the growth of sustainable agriculture. This study made use of biochar, which is made from organic waste and serves to temporarily hold soil nutrients in the root zone of plants. The focus of this research was to find new ways to expand coastal land use by using biochar made from organic waste as a soil amendment for agriculture, particularly vegetable production. The study employed a two-factor design: the first was the size of the biochar material, which was coarse and fine, and the second was the biochar dosage, which included 10, 15 and 20 tons per hectare. Coconut shell waste was used to make the biochar. According to the results, the application of course-sized biochar at a dose of 15 tons per hectare resulted in lateral root distribution. Vegetable root development tended to be reduced when fine biochar was used. We can conclude that one of the solutions for sustainable agricultural production is to use biochar ameliorant materials made from environmentally friendly organic waste. Keywords: Biochar, Coastal land, Organic matter, Roots Areas, Soil Carbon, and Sustainaibility Agriculture.

Mangrove are typical coastal ecosystem, which has high tolerance for salinity, generally located on the coast that has amount of sediments with warm climate. Protect from waves, as well as areas affected by tides and input of freshwater and material from mainland. The objectives of research area; identify natural resources which support mangrove existence; and community participation to conserve. The research has been conduct qualitative method use deductive approach, which means of field work observation, semi-structure interview, and documentation. The main objects of the research are: (1) coastal plant, i.e. true mangrove; (2) coastal community, which give effort for coastal life and the problems. The Coastal community has been learning from previous problems that happened continuously on coastal area. They have known how to face with individual and group action plan, such as seeding mangrove plant and regularly togetherness has reforestation program both community and government.