China News Service, February 10. According to the WeChat public account of the "State Forestry and Grassland Administration", the second national key protected wild plant resources survey organized by the State Forestry and Grassland Administration has been fully completed.

This time, the population quantity, distribution, habitat characteristics, threat level and in situ conservation status of the 283 wild plants that are most concerned in my country (including 56 national first-level protected wild plants and 191 national second-level protected wild plants) were investigated. a full investigation.

　　It is reported that the forestry and grass administrative departments at all levels in various provinces organized tens of thousands of people to participate in this survey, with a total workload of more than 250,000 man-days, and the completion of more than 6,500 survey lines of more than 38,000 kilometers. There are more than 100,000, and the data is aggregated with the cut-off point of December 31, 2018.

　　The main findings are as follows:

　　The number of species

　　According to the number of extant wild plants, the 283 surveyed species can be divided into 3 grades.

First, there are three species that have not been found in the wild, including Pingbian Panax notoginseng, Xiaohua Jinhua tea and pseudo-cardamom.

Second, there are only 1-5,000 species in the wild, with a total of 98 species, such as only 1 hornbeam in Putuo, 11 blue fruit trees in Yunnan, and 103 ferns.

In terms of population size, it is generally believed that under natural conditions, a population with more than 5,000 mature individuals is a species that can survive stably. The above-mentioned 98 species are already below this limit, accounting for 34.6% of the surveyed species. The distribution is sporadic or extremely narrow, and is seriously endangered.

The third is the species with more than 5,000 plants, a total of 182 species. Compared with the species with less than 5,000 plants, these species can basically survive stably, but they still need to be protected.

　　The area of ​​the community

　　The area of ​​the communities in which the surveyed species are located varies greatly.

There are 115 species with an area of ​​less than 100 hectares, accounting for 40.6% of the surveyed species. Among them, 25 species such as Gongshan Sanjian fir and Baishanzu fir have an area of ​​less than 1 hectare, and 25 species such as black cypress in southern Yunnan have an area of ​​less than 10 hectares.

There are 54 species in the community area ranging from 101 hectares to 1,000 hectares, mainly including the species of elm elm and pedipoptera, which are scattered and rarely in pieces.

There are 48 species with a community area of ​​1,001 to 10,000 hectares, and a total of 63 species with a community area of ​​more than 10,001 hectares.

　　3. In situ protection status

　　Taking national and provincial nature reserves as independent survey units, the survey on the in situ conservation of wild plants shows that 30 wild species are fully included in in situ conservation, and more than 80% of 61 wild species are included in in situ conservation. There are 91 surveyed species with good in situ conservation status, accounting for 32.5% of the surveyed species with distribution in the wild.

There are 140 species of wild species whose in situ conservation rate is below 50%, accounting for 50% of the total number of surveyed species distributed in the wild. Among them, 27 species of wild species have not been included in in situ conservation at all, and 42 species of wild species have been included in in situ conservation of less than 10%. .

　　4. Natural renewal status

　　The survey showed that 116 surveyed species had no saplings in the wild, and 136 surveyed species had no saplings in the wild.

The 104 surveyed species had no saplings or seedlings, accounting for 37% of the 283 surveyed species.

　　5. Human-induced disturbance of the habitat

　　The investigation on the human disturbance status of the investigated species and their habitats shows that 78.96% of the wild plant populations and their habitats face human disturbance to varying degrees. Wild plant populations and habitats were strongly disturbed, 28.84% were moderately disturbed, and 53.88% were less disturbed.

　　A comprehensive analysis of the survey results shows that the status of wild plant resources in my country is mixed.

The good news is that among the 54 species of wild plants with very small populations comparable to the first survey, 36 species of wild plants have steadily increased in numbers, accounting for 67%.

This is mainly due to the long-term implementation of wildlife protection and nature reserve construction projects in my country and the rescue and protection of extremely small populations of wild plants, and the continuous improvement of in situ and ex situ protection networks.

At the same time, it should be noted that my country's wild plant resources are still facing greater threats. The wild population of 98 surveyed species is below the threshold for stable survival, 115 surveyed species have a community area of ​​less than 100 hectares, and some species are naturally regenerated slowly and are highly endangered. , extremely vulnerable; 108 surveyed species face habitat degradation and fragmentation caused by human disturbance, 42 surveyed species are over-utilized due to excessive market demand; 69 surveyed species have wild populations that are not included in in situ conservation or protection at all Below 10%, there is a protection gap.

　　This survey has obtained a large amount of important data. The results comprehensively and objectively reflect the basic situation of some national key protected or focused wild plant resources in China. It not only reflects the important achievements of in situ and ex situ conservation of wild plants in my country over the years, It also found out the threats faced by some species and the existing problems in protection management, which provided an important scientific basis for revising the "List of National Key Protected Wild Plants" and carrying out wild plant protection work in the future.

　　In the next step, forestry and grassland authorities at all levels will make full use of the survey results to clarify the key goals and tasks of wild plant protection in the new period, and implement the "14th Five-Year Plan for Forestry and Grassland Protection Development Plan" and "National Important The Master Plan for Major Ecosystem Protection and Restoration Projects (2021-2035), through the construction of a natural reserve system with national parks as the main body and the construction of a national botanical garden system, coordinating the in-situ and ex-situ protection of wild plants, encouraging artificial cultivation, Strengthen monitoring and supervision, increase the research and development of rescue and protection technology, and comprehensively improve the level of wild plant protection in my country.