Adaptability Analysis Of Tricholoma Matsutake Based On Climate Niche Model

Tricholoma matsutake is a famous rare edible fungus in the world,which is symbiotic with the plants of Pinus and Quercus,and has high edible and medicinal value.China is one of the most important producing areas of Tricholoma matsutake in the world,and Tricholoma matsutake plays an important role in the edible fungus industry in China.In recent years,with the increase of domestic and foreign market demand and large-scale predatory collection,the resources of Tricholoma matsutake in China are increasingly exhausted,and the output is declining year by year.Comprehensive grasp of the distribution and environmental characteristics of Tricholoma matsutake resources in China,targeted protection and cultivation of Tricholoma matsutake resources,is the premise and basis for the sustainable development of Tricholoma matsutake industry.In view of the actual needs of the protection and development of Tricholoma matsutake in China at the present stage,through the further optimization of the existing species distribution model,the climate factor and biological factor were brought into the model analysis framework at the same time,and through niche factor analysis and simulation,The effects of biological factors and climatic factors on the distribution of Tricholoma matsutake resources were further discussed.The spatial distribution pattern of Tricholoma matsutake resources in China was expounded,and the suitable growth grade of Tricholoma matsutake resources was revealed.The potential distribution and change trend of Tricholoma matsutake under climate change conditions were comprehensively evaluated.First,the suitable area distribution of Tricholoma matsutake in China was studied by means of species distribution model and niche factor analysis.The results showed that the distribution of Tricholoma matsutake was mainly along the middle of Yunnan Plateau,Hengduan Mountain,Qinling Mountains and Changbai Mountain,spanning the northeast and southwest of China,among which Yunnan,Sichuan,Jilin and other places were the most concentrated provinces and regions of Tricholoma matsutake in China.Secondly,the potential changes of Tricholoma matsutake distribution area in China under the background of climate change were comprehensively evaluated.it was found that with the climate warming,the suitable growth area of Tricholoma matsutake in China showed a decreasing trend as a whole.The loss of Tricholoma matsutsutake in Northeast China is significantly higher than that in Southwest China.northwest Yunnan,Western Sichuan Plateau and Southeast Tibet Autonomous region will be the core areas of Tricholoma matsutake resource conservation in the future.Thirdly,the suitable areas of four symbiotic plants of Pinus densata,Quercus aquifolioides,Pinus yunnanensis and Pinus densiflora were studied.The results showed that Pinus densata and Quercus aquifolioides not only showed strong climatic preference,but also showed strong regional dependence,and their suitable distribution was similar to that in mountainous areas.the higher the altitude,the stronger the suitability.The suitable area distribution of Pinus yunnanensis covers almost the whole southwest region,but its highly suitable area is limited to Yunnan.Pinus densiflora s is the most widely distributed of the four symbiotic tree species.With the aggravation of global climate change,its potential distribution area has a trend to further expand to high altitude and high latitude.Fourth,combined with the comprehensive analysis of climatic and biological factors,it is found that symbiotic plants are not the core elements limiting the distribution of Tricholoma matsutake in China,and in a large temporal and spatial scale,Climate change will become an important factor threatening the protection and utilization of Tricholoma matsutake resources and industrial development in China.On the whole,this study provides a more detailed and forward-looking data support for the sustainable development of Tricholoma matsutake industry in China,and provides a solution for resource evaluation and conservation planning of rare horticultural resources based on spatial information technology.It provides a scientific reference and research case for in-depth understanding of the potential impact of global climate change on the development and utilization of biological resources in China.