2 results about "Masson pine" patented technology

This invention discloses a management method for improving the carbon sequestration capacity of Masson pine forests, belonging to the field of Masson pine forest management technology. The method includes steps such as land preparation and clearing, density optimization, mixed planting, formation of multi-layered forests, and post-management. Through the above method, pure Masson pine forests are transformed and managed into multi-layered mixed forests. During this process, fermented fertilizer prepared from pine needle litter is applied to increase the organic matter content of the forest soil, promote good tree growth, increase biomass, and optimize forest stand structure. This, in turn, enhances the carbon sequestration capacity of the tree layer, understory vegetation layer, and soil layer, comprehensively improving the carbon sink capacity of Masson pine forests, which is of great significance for improving the ecological environment.

The application discloses a preparation method of a water-white and yellowing-resistant rosin modified tackifying resin, and comprises the following steps: step 1, mixing Masson's pine rosin and maleic anhydride to perform D-A addition reaction to obtain maleic anhydride pine rosin; step 2, rapidly cooling the maleic anhydride pine rosin, and then adding 7-hydroxy-4-methyl coumarin and tetramethyl piperidinol in sequence to prepare an intermediate R1-COOH; and step 3, performing ring-opening reaction on the intermediate R1-COOH and an epoxy compound under the action of a catalyst to prepare the water-white and yellowing-resistant rosin modified tackifying resin. The application has the characteristics of simple reaction equipment, green and environment-friendly reaction process, light product color and good yellowing resistance.