Abstract
Varieties and organic materials have a very important role to the flux of methane (CH4) on paddy cultivation, especially on wetlands. Purpose of this research to determine the amount of methane emissions that released from paddy cultivation in acid sulphate soils with the use of different varieties and paddy straw composting. Acid sulfate soil samples taken Experimental Farm Swampland Agricultural Research Center (BALITTRA), Tanjung Harapan, District Alalak, Barito Kuala, South Kalimantan. This research uses Randomized Complete Design of two factors. The first factor is the use of paddy varieties and the second factor is the use of paddy straw compost. Research shows that there is a very real interaction between the two factors. Treatment varieties Inpara 3 + without paddy straw compost releases CH4 flux most low at 0,030 mg.m-2.day-1, while treatment Inpari 30 + paddy straw compost 5 Mg. ha-1 release most CH4 flux is 0.571 mg. m-2.day-1.
Highlights
The restoration and improvement of post tin mining land within the area of production forest of Bangka Belitung Islands Province would be conducted by PT Tambang Timah
The results showed that the bulk density of topsoils is 1.51-2.60 g cm-3 with a total porosity ranging from 28.17% up to 35.67%, and the aeration pores are 8.99-16.97% (Table 1)
The restoration of the soils/planting media in the post tin mining land in the Province of Bangka Belitung Islands can include, among others, improvement of pH by liming, application of organic fertilizers to increase soil organic-C content, application of zeolite amides, and N, P, K fertilizers according to the needs of plants grown on the restored lands
Summary
The restoration and improvement of post tin mining land within the area of production forest of Bangka Belitung Islands Province would be conducted by PT Tambang Timah. 74 post tin mining areas covering 60,000 ha of land (Badan Pusat Statistik Kabupaten Belitung 2009) that need to be identified and restored, so that the data of land characteristics before and after exploitation of tin mining are needed. I Yuarsah et al.: Soil Physical and Chemical Properties of Abandoned Tin Mining techniques that can accelerate the improvement of degraded land. Mining activities can be performed on the ground (open pit mining) and underground (deep mining) including excavation, dredging, and suctioning that cause the pile of hills and large pits filled with water. Environmental degradation is an action that results in a direct change to the physical and/or biological of the environment, resulting in an inefficient or nonfunctioning environment in supporting sustainable development (Law No 4 of 1982)
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