title: Natural Resource Monitoring of Rheum tanguticum by Multilevel Remote Sensing.
abstract: Remote sensing has been extensively applied in agriculture for its objectiveness and promptness. However, few applications are available for monitoring natural medicinal plants. In the paper, a multilevel monitoring system, which includes satellite and aerial remote sensing, as well as ground investigation, was initially proposed to monitor natural Rheum tanguticum resource in Baihe Pasture, Zoige County, Sichuan Province. The amount of R. tanguticum from images is M = S*ρ and S is vegetation coverage obtained by satellite imaging, whereas ρ is R. tanguticum density obtained by low-altitude imaging. Only the R. tanguticum which coverages exceeded 1 m(2) could be recognized from the remote sensing image because of the 0.1 m resolution of the remote sensing image (called effective resource at that moment), and the results of ground investigation represented the amounts of R. tanguticum resource in all sizes (called the future resource). The data in paper showed that the present available amount of R. tanguticum accounted for 4% to 5% of the total quantity. The quantity information and the population structure of R. tanguticum in the Baihe Pasture were initially confirmed by this system. It is feasible to monitor the quantitative distribution for natural medicinal plants with scattered distribution.
authors.affiliation: Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences, Beijing 100193, China.
authors.forename: Caixiang
authors.initials: C
authors.lastname: Xie
authors.affiliation: Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences, Beijing 100193, China.
authors.forename: Jingyuan
authors.initials: J
authors.lastname: Song
authors.affiliation: Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences, Beijing 100193, China.
authors.forename: Fengmei
authors.initials: F
authors.lastname: Suo
authors.affiliation: Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences, Beijing 100193, China.
authors.forename: Xiwen
authors.initials: X
authors.lastname: Li
authors.affiliation: Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences, Beijing 100193, China.
authors.forename: Ying
authors.initials: Y
authors.lastname: Li
authors.affiliation: Shandong Academy of Agriculture Sciences, Jinan 250100, China.
authors.forename: Hua
authors.initials: H
authors.lastname: Yu
authors.affiliation: Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences, Beijing 100193, China.
authors.forename: Xiaolan
authors.initials: X
authors.lastname: Xu
authors.affiliation: Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences, Beijing 100193, China.
authors.forename: Kun
authors.initials: K
authors.lastname: Luo
authors.affiliation: Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences, Beijing 100193, China.
authors.forename: Qiushi
authors.initials: Q
authors.lastname: Li
authors.affiliation: Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences, Beijing 100193, China.
authors.forename: Tianyi
authors.initials: T
authors.lastname: Xin
authors.affiliation: China Meheco Co., Ltd., Beijing 100061, China.
authors.forename: Meng
authors.initials: M
authors.lastname: Guan
authors.affiliation: China Meheco Co., Ltd., Beijing 100061, China.
authors.forename: Xiuhai
authors.initials: X
authors.lastname: Xu
authors.affiliation: Botanical Raw Material Research Department, Tsumura & Co., Ibaraki 300-1192, Japan.
authors.forename: Eiji
authors.initials: E
authors.lastname: Miki
authors.affiliation: Botanical Raw Material Research Department, Tsumura & Co., Ibaraki 300-1192, Japan.
authors.forename: Osami
authors.initials: O
authors.lastname: Takeda
authors.affiliation: Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing 100700, China.
authors.forename: Shilin
authors.initials: S
authors.lastname: Chen
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