It's spring tea picking season again, and ecological tea gardens all over Fujian are busy.
Since the concept of "three teas" was put forward, the coordinated development of tea culture, tea industry, and tea technology has become an important direction for the development of the tea industry in the new era. The potential has gradually attracted the attention of academia and industry.
Mountain tea gardens are an important agricultural ecosystem. Tea planting requires a certain amount of fertilizers and pesticides. This process will produce methane and other greenhouse gas emissions. The subsequent picking, storage, transportation and sales will also produce a corresponding amount of Therefore, the tea garden itself is a source of carbon emissions.
But at the same time, tea trees can absorb carbon dioxide through photosynthesis during the growth process, convert it into carbon molecules, and then fix the carbon in the soil through roots and litter.
Therefore, tea gardens are also considered to have huge carbon sequestration potential. As long as they are carefully studied and utilized, it is entirely possible to develop into an important carbon sink industry with both scale and value.
As a major tea-producing province, Fujian has made active explorations and attempts in this regard. For example, it took the lead in the country to carry out monitoring and statistics of carbon emissions in tea gardens, vigorously promoted planting techniques for reducing emissions and increasing sinks in major tea-producing counties, and using litter to increase soil organic carbon. Reserves, planting soybeans and rapeseed in rotation, thus saying goodbye to chemical fertilizers, herbicides and pesticides, etc., have received a certain carbon reduction effect.
However, the lack of monitoring standards, accounting technologies and methodological systems is still the bottleneck that hinders the development of carbon sinks in ecological tea gardens.
Compared with the more mature forestry carbon sinks, the agricultural carbon sinks started relatively late, and the related regulations, industry norms and technical standards are very lacking. Even if we look internationally, there is currently no widely recognized carbon sink standard.
To solve this problem, we must first accelerate the research on the carbon cycle mechanism of the tea garden ecosystem, ponder the influencing factors of the carbon sequestration process, and provide a theoretical support that can withstand scrutiny for the development of ecological tea garden carbon sinks.
Secondly, it is necessary to learn from the forestry carbon sink method, extensively carry out relevant data monitoring, and take a green and standardized development path.
Like forests, as a plant, tea trees have growth boundaries, and their planting area, leaf area index, soil carbon sequestration and other indices can be calculated.
Fujian Anxi Bama Wisdom Garden has introduced a meteorological observation system to record the temperature, precipitation, radiation and other related meteorological data of tea gardens in real time. These data provide support for the calculation of carbon sinks in tea gardens.
At the same time, it is necessary to encourage the promotion of advanced technologies for green production in tea gardens, promote the transformation of technological achievements, accelerate the transformation of existing tea gardens into standardized ecological tea gardens, and systematically carry out research on technologies for reducing emissions and increasing sinks in the tea garden ecosystem.
In addition, when the time and conditions are ripe, market-oriented means can be introduced to carry out carbon sink trading in ecological tea gardens first, and strive to play an exemplary and guiding role, promote experience, and establish a model.
Liu Chunmuyang