Carbon sequestration in sub-tropical soils under rubber plantations in north-east India potx

... 12.8*(0.113*X) r 2 = 0.73* Carbon sequestration in sub-tropical soils under rubber plantations in north-east India Debasis Mandal and K. R. Islam Indian Rubber Research Institute, Tripura, and University ... 2001). Rubber plantations were raised as a secondary forest in the Indian state of Tripura since 1975 to improve degraded lands, generate income for loca...

Ngày tải lên: 31/03/2014, 09:21

... rain- free days preceding it. This still means that there is a maximum of only 5 months in which to do the felling, windrowing and burning. Underbrushing and felling one dry season and windrowing ... in the pre-nursery in April. Main nursery planting is in August and field planting from mid-March onward at the beginning of the wet season. The pre-nursery is shaded to reduce sun s...

Ngày tải lên: 17/03/2014, 11:20

... his own rubber plantation. In 2005, all rubber seedlings were imported from China. Akja bought 500 rubber seedlings from China in 2005; he paid around 3 Chinese Yuan for each seedling. He has ... an amazing boom in rubber. In next section, the paper details some other conditions stimulating the dramatic increase in rubber plantations in Laos. 3. The upland problems...

Ngày tải lên: 23/03/2014, 21:22

... depositing metabolic waste of the tree. Latex flows from the living parts of a rubber tree in response to wounding, tapping being in fact controlled wounding using the sap for the manufacture of rubber ... placing manure in the holes. This practice helps to maintain the humus content in the topsoil (Rayong 2003). 3.1.7 Mulching and pruning Mulching is done at the end of the r...

Ngày tải lên: 31/03/2014, 09:21

... Mg/ha in biomass and 10.42 Mg/ha in soil. The young plantations had the high carbon percentages in soil and low in biomass whereas carbon allocation in the older plantations was higher in biomass ... researchers. The results in this study would help in improving the standard values in interpreting the soil and leaf analysis for assessing fertilizer needs in r...

Ngày tải lên: 21/02/2014, 04:20

... afternoon in plantations, depending on the amount of work for each rubber tapper. The main tasks for rubber tappers consist of: Cutting incisions in the rubber trees in morning hours and collecting ... decades in Indonesia in 2001 to a maximum in spring 2011. The consequence has been an increase in income and wellfare for rubber farmers, because the price pr. kg. o...

Ngày tải lên: 21/02/2014, 04:20

Ngày tải lên: 17/03/2014, 11:20

... significant increase of about 50% in the tropospheric column amount of NO 2 over south China using the satellite instruments. In addition to the DIN input, a surprisingly high DON input of 17.8 ... conifer-dominant canopies in the pine and mixed forests repre- senting from 15% to 28% of their DIN input in precipitation (Table 2). Our results are, 4149 BGD 4, 4135–4171, 2007 Input-outpu...

Ngày tải lên: 23/03/2014, 00:20

... applied to the rubber plantations in Baka village. Like we observed in Baka, whole Xishuangbanna is experiencing a fast economic growth mainly due to rubber plantations. Increased cash incomes has ... Kunming: Yunnan People’s Press. 2 Province, in 1904. This was the first plantation of the Amazonian rubber trees Hevea brasiliensis in China. In the following few y...

Ngày tải lên: 23/03/2014, 21:22

... Management Activities in Forest Plantations 133 3.4 Effects of Peatland, Mining and Urban Land Uses on Forest Carbon Sequestration 135 3.4.1 Forested Peatlands 135 3.4.2 Mining Activities in Forests 139 3.4.3 ... climate. While C sequestration in forest ecosystems cannot stop increases in atmospheric CO 2 originating from fossil fuel combustion, enhancing and strengthening C...

Ngày tải lên: 28/03/2014, 10:20