Some key problems of quantitative estimation in multilevel remote sensing monitoring system of plant medicinal materials / 中国中药杂志

The development and advancement in many subjects and technology promote the foundation of new monitoring system in plant medicinal materials. The new plant medicinal materials monitoring system with multilevel remote sensing panel and different resolution is necessity of technology development and needs of reality. The paper discusses the idea of the new multilevel remote sensing system and studies the related key problems and mathematical theory, increasing the survey precision of plant medicinal materials, providing definite guidance and theory value.

Suitability evaluation of Panax quinquefolium's producing area based on TCMGIS- I / 中国中药杂志

<p><b>OBJECTIVE</b>To supply the scientific data for the choice of medicinal plants' producing area through analyzing the suitable area for Panax quinquefolium' growth.</p><p><b>METHOD</b>TCMGIS-I (Suitability evaluation geographic information system of traditional Chinese medicine producing area) was developed and used to analyze the suitable producing area of P. quinquefolium Wisconsin state of USA, one of the origin producing area of the geo-authentic crude drugs, was selected as the standard analytical area and some key factors related to plant growth such as average temperature, altitude, soil type, precipitation were chosen to be considered.</p><p><b>RESULT</b>The result showed that the suitable area for P. quinquefolium' growth in China is similar to the present status. It concentrates in the northeast and the north of China, and part of Shanxi province is also suitable but the field area is small.</p><p><b>CONCLUSION</b>The development of P. quinquefolium in China should concentrate in the northeast and the north of China. The TCMGIS-I is valuable to the analysis of suitable producing area and introduction of medicinal plant.</p>

Study on application of low altitude remote sensing to Chinese herb medicinal sustainable utilization / 中国中药杂志

Sustainable utilization and bio-diversity protection of traditional Chinese medicine (TCM) have been a hotspot of the TCM study at present, in which the choice of appropriate method is one of the primary problems confronted. This paper described the technical system, equipment and image processing of low altitude remote sensing, and analyzed its future application in Chinese herb medicinal sustainable utilization.

Progress in Ginsenosides Biosynthesis and Prospect of the Secondary Metabolic Engineering for the Production of Ginsenosides / 中国生物工程杂志

Ginsenosides,which belongs to triterpenoid saponins of plant terpenoids,are the main active components of the valuable medicinal herbs ginseng and American ginseng.Recent studies show that ginsenosides have a variety of beneficial effects,including anti-inflamatory,antioxidant,and anticancer effects.Ginsenosides are synthesized by complicated modification of triterpenoid skeleton after cyclization of 2,3-oxidosqualene through triterpene saponin synthesis pathway in which they share common early steps with phytosterols synthesis.It outlines recent advances for the biosynthesis of ginsenosides,the cloning and characterization of genes encoding key enzymes in the pathway and the basal framework of ginsenosides biosynthesis pathway.The prospects of secondary metabolism engineering in the biosynthesis of plant natural products and its application in ginsenosides biosynthesis are also discussed.

Studies on the resources survey methods of Panax notogingseng based on remote sensing / 中国中药杂志

<p><b>OBJECTIVE</b>To explore the survey methods for the cultivated medicinal plant resources such as Panax notogingseng based on remote sensing.</p><p><b>METHOD</b>Through the preliminary study by remote sensing technique and field survey in the study area, the optimal methods in the procedure were chosen for the survey.</p><p><b>RESULT</b>In this study,a set of survey method for P. notogingseng based on remote sensing technique was founded, which included the remotely sensed data-source selecting, the remote sensing image processing, interpretation and validation etc.</p><p><b>CONCLUSION</b>With different resolution remotely-sensing data at the study area, the area, the natural storage and the yield of P. notoginseng were calculated. For Maguan county, with SPOT5 (5 m), the relative right rate of judgement, the relative precision of area and the relative precision of yield with statistics was 92.7%, 94.4% and 78.2% separately, and with TM (30 m), the relative right rate of judgement, the relative precision of area was only 71.4% and 58.8%, though, for Qiubei county, with TM (30 m), the relative precision of area with statistics could reach 74.7%, which showed that choosing appropriate remotely-sensing data and processing methods for different area, the remote sensing technique is feasible for resource survey of cultivated medicinal plants such as P. notoginseng.</p>