China ; Conservation of Natural Resources ; Electricity

This paper presented a study on the dynamic of essential oil accumulation in Japanese mint SK33 (M. arrvensis L.) and the influence of storage time on its quantity and quality. This mint was cultivated at Co Nhue experimental station, Tu Liem district, Ha Noi City between 2000 and 2002. The results showed that during the vegetation and development process, the essential oil content in the plant gradually increased and achieved maximum at first branch flowering stage and reduced to minimum at the end of flowering stage. The menthol content in essential oil of Japanese mint SK33 reached the highest value at full flowering stage (81.79%). The best harvest time for this mint is from the beginning flowering stage to full flowering period. After harvesting the whole plants can be stored during 20 days without the change in content and quality of essential oil
oils ; Conservation of Natural Resources ; Oils, Volatile

OBJECTIVETo investigate the common resource of Chinese herbal medicine in western of Luoding City, Guangdong Province, and propose pertinent suggestions concerning the exploitation,utilization and conservation of the medicinal resources.

METHODSWith plant taxonomy method, we selected the JiaYi town as the center for local common Chinese herbal medicine resources, ecological environment and non-governmental investigation of medicinal.

RESULTSThere were 123 species of medicinal plants in Jiayi Town, including pteridophyte 11 species, gymnosperm 5 species, dicotyledon 97 species,and monocotyledon 12 species.

CONCLUSIONThis region has an excellent ecological environment and forest plant communities preserved relatively intact suitable for the growth of Lingnan Chinese herbal medicine, as well as a profound cultural background of folk medicine. The resources should be actively protected for further rational development and utilization.

This study was conducted to investigate the wild and cultivated resource situation of Rheum tanguticum in main production area of China, estimate its reserves, and put forward the feasible approach for the sustainable utilization of R. tanguticum. On the basis of the literature data about R. tanguticum, conbined with interview, investigation and sampling investigation, the total reserve of resources is estimated using the route-quadrat method and the vegetation and soil-type map area method proposed by our research group. The results indicate that there is no obvious change between the present distribution ranges of the wild R. tanguticum and its historical records, but its population density has changed clearly. The reserve of the wild R. tanguticum has seriously declined in lots of place, even faced the exhaustion in some regions. According to the investigation, the resource reserve of the wild R. tanguticum is no more than 5 000 t, and the cultivated is about 1 607 t. The resource reserve of the wild R. tanguticum is nearly depleted, and this suggests that the wild R. tanguticum should be enrolled in the protection plant list, and the cultivated will become the main resource of Rhubarb in the future. So it is extremely neccessary to collect and protect the germplasm resource of R. tanguticum, establish the germplasm nursery and repository, and conduct breeding research on those bases.
China ; Conservation of Natural Resources ; Rheum ; growth & development

Collected and preserved germplasm resource of Dendrobium chrysotoxum to lay the foundation for screening fine germplasm. Through refering literatures, visiting and field survey to investigate the distribution, botanic characters and apply status of D. chrysotoxum, furthermore to collect the germplasm resource. The result show that wild germplasm resource of D. chrysotoxum has obvious differences in stem characters, leaf shape as well as flower color aspects. In addition, in recent ten years, the reserves of D. chrysotoxum germplasm resource seriously descended. Through this study, we can draw a conclusion that D. chrysotoxum germplasm resource exist diversity in biology. In these germplasm resource, there are high yield and good quality variety.
Conservation of Natural Resources ; Dendrobium ; growth & development

The rapid appraisal method was used to identify the botanicals used ethnomedicinally from a total of 300 randomly selected respondents drawn from the existing three geo-political zones of Ekiti State, Nigeria. The results obtained revealed that about 40% of the 71 botanicals identified presently rare. Most of the presently abundant botanicals are species primarily cultivated for other purpose other than medicine. Most of the identified species are valued for their curative effects on malaria and fever, the predominant diseases in the study area. The need for the conservation of the rare species cannot be over emphasised as most rural dwellers in the study area depend mostly on herbs from these species. Strategies towards the attainment of this goal are proposed.
Conservation of Natural Resources ; Nigeria ; Plants, Medicinal

Conservation of Natural Resources ; Hypocreales ; isolation & purification ; Medicine, Chinese Traditional ; Natural Resources ; Species Specificity ; Tibet

It is of great significance to carry out scientific investigation of threatened species and assess their in-situ conservation status in order to guide the conservation and management of these species within a region. In this study, we explored and assessed the biodiversity and in-situ conservation status of the threatened medicinal vascular plants(TMVPs) in central China. The results showed that there were 276 TMVPs in central China, including 18 critically endangered(CR), 77 endangered(EN), and 181 vulnerable(VU) species. Of which, 222 TMVPs were distributed in 49 national nature reserves, with an in-situ conservation rate of 80.43%. And the in-situ conservation rate of CR, EN and NR species were 83.33%, 77.92% and 81.22%, respectively. The complementary algorithm was used to select the nine national nature reserves with the highest protection and complementary contribution to the TMVPs. The cumulative protection contribution rate of these nine nature reserves was 81.98%. Fifty-four TMVPs were distributed outside of national nature reserves, while mainly distributed within 10 hotspot counties including Badong county, Hubei province, Sangzhi county, Hunan province, Jianghua Yao Autonomous county, Hunan province and so on. In general, TMVPs are well protected by the national nature reserves in central China. However, there are still some conservation gaps. It is necessary to carry out further field investigation on the species with conservation gaps and identify the gap areas, so as to provide scientific guidance for the optimization of the conservation of TMVPs in this region.
Biodiversity ; China ; Conservation of Natural Resources ; Endangered Species ; Plants, Medicinal ; Tracheophyta

The three objectives of the Convention on Biological Diversity (CBD) are the conservation of biological diversity, the sustainable use of its components and the fair and equitable sharing of benefit sarising from the utilization of genetic resources.The Nagoya Protocol significantly advances the CBD's third objective by providing a strong basis for greater legal certainty and transparency for both providers and users of genetic resources.In June 2016, the Chinese government approved the accession to the Nagoya Protocol. The implementation of the Nagoya Protocol is bound to greatly influence the traditional Chinese medicine (TCM) as its development relies on medical biological genetic resources.Both the protection and access of medical biological genetic resources and its related traditional knowledge and the introduction, breeding, biosynthesis and the extraction and modification of effective components of medicinal organism are with the prescribed scope of the Nagoya Protocol. In this study, we simply introduce the background and main contents of the Nagoya Protocol in first. We then explore the relationship between the Nagoya Protocol and the TCM.We also analyze the positive effects on the TCM for China to be one of the parties of the Nagoya Protocol and finally make some proposals for better implementation of the Nagoya Protocol.This study has certain reference significance to the resource economy and management of TCM.
Biodiversity ; China ; Conservation of Natural Resources ; Medicine, Chinese Traditional ; standards

The wild plant Dactylorhiza hatagirea commonly used in Tibetan medicine. In recent years, it is on the verge of extinction due to improper excavation and habitat deterioration. Based on the literature review, and the meteorological and ecological data of Qinghai Province and data derived from the field survey, this study took the altitude, humidity index, annual average wind speed, monthly average sunshine, precipitation and temperature in growing season, soil type and vegetation type as the zoning indexes, and applied ArcGIS software for spatial superposition analysis. The results showed that the D. hatagirea was primarily found in the alpine meadow in the east and south of Qinghai Province. The overall suitable area was about 30 700 km~2. Taking Qinghai Lake as the boundary for reference, the area in the south appeared to be more suitable, while the area in the east appeared to be secondary in suitability. Henan County, Zeku County, Jiuzhi County and Banma County were the main suitable areas covering the expanse of 12 454 km~2. Through the field verification, such zoning results appeared to be accurate, precise and illustrative. The spatial distribution of ecological suitability provides the decision-making basis for the resource investigation, environment protection and comprehensive resource management. It also provides the empirical case for developing the interdisciplinary research method in the suitability study of medicinal plants.
Altitude ; China ; Conservation of Natural Resources ; Ecosystem ; Plants, Medicinal ; Soil