Study on the Habitat Characteristics of the Geoher
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RESEARCH ARTICELS
Study on the Habitat Characteristics of the Geoherb of Atractylodes Lancea Based on Geographic Information Systems (GIS)
Lanping Guo 1, Luqi Huang 1*, Hong Yan 2, Dongmei Lv 1, Youxu Jiang 2
Abstract: To study the habitat characteristics of Mao-Atractylodes lancea, which is a geographical product of Mt Maoshan in Jiangsu province of China and a kind of geoherb of Traditional Chinese Medicine, we determined the leading factors of A. lancea after stepwise regression, investigated the limiting factor and analyzed the datas. Then averages for 30 years about the main ecological factor were used to do spatial interpolation on the platform of IDIRIEIW, and overlay analysis was done between the Mt. Maoshan and the whole habitat of A. lancea. We found that Precipitation was one of the leading factors that affected the quality of A. lancea, and high temperature was a limiting factor that influenced the living of A. lancea. The habitat characteristics of Mao-A. lancea are that mean annual temperature is more than 15℃, monthly mean minimum temperature is between -2~-1℃, monthly mean maximum temperature is about 32℃, absolute minimum temperature is between -17~-15℃, drought season is between 1~2months, mean annual precipitation is between 1,000~1,160mm. In conclusion, habitat of Mao-A. lancea is characterized as highest temperature, short drought season and more precipitation, and the growth of Mao-A. lancea related to the environmental stress and showed the effects of the stress in turn.
Key words: Mao-Atractylodes lancea; geographic information systems; Chinese herbal drugs
Atractylode lancea (Thunb) DC. is perennial plant [1], which is known to be widely distributed to the north of Yangtze river in China. Their dried rhizomes, which have been used for diuretic and analgesic purposes as well as for stomach disorders in Traditional Chinese Medicine, are described in Chinese Pharmacopoeia as the botanical origin of the crude drug "Cangzhu".
It is well known that Mao-A. lancea in Mt. Maoshan of Jiangsu province is a kind of geoherb, with the conception arising from traditional Chinese medicine and subjecting at least two meanings: 1) producing from a specific habitat and adapting well to the habitat, 2) having good curative effects with fewer side effects. In another words, Mao-A. lancea is a chemical type & ecotype apposite to Mt. Maoshan habitat and a geographical indicating product based on their good reputation.
In the past few years, Mao-A. lancea decreased sharply and even faced imminence because of over collecting and the habitat losing. The highest annual purchasing amount of Mao-A. lancea was 6,000 kilogramme in history, but Mao-A. lancea have been hardly purchased since 1990's [2]. In order to change the imminent status, some A. lancea are cultivated in Jiangsu and Hubei provinces now, but the output and quality of the cultivated A. lancea are unstable which mainly attribute to the unsuited habitat [3] ......
RESEARCH ARTICELS
Study on the Habitat Characteristics of the Geoherb of Atractylodes Lancea Based on Geographic Information Systems (GIS)
Lanping Guo 1, Luqi Huang 1*, Hong Yan 2, Dongmei Lv 1, Youxu Jiang 2
Abstract: To study the habitat characteristics of Mao-Atractylodes lancea, which is a geographical product of Mt Maoshan in Jiangsu province of China and a kind of geoherb of Traditional Chinese Medicine, we determined the leading factors of A. lancea after stepwise regression, investigated the limiting factor and analyzed the datas. Then averages for 30 years about the main ecological factor were used to do spatial interpolation on the platform of IDIRIEIW, and overlay analysis was done between the Mt. Maoshan and the whole habitat of A. lancea. We found that Precipitation was one of the leading factors that affected the quality of A. lancea, and high temperature was a limiting factor that influenced the living of A. lancea. The habitat characteristics of Mao-A. lancea are that mean annual temperature is more than 15℃, monthly mean minimum temperature is between -2~-1℃, monthly mean maximum temperature is about 32℃, absolute minimum temperature is between -17~-15℃, drought season is between 1~2months, mean annual precipitation is between 1,000~1,160mm. In conclusion, habitat of Mao-A. lancea is characterized as highest temperature, short drought season and more precipitation, and the growth of Mao-A. lancea related to the environmental stress and showed the effects of the stress in turn.
Key words: Mao-Atractylodes lancea; geographic information systems; Chinese herbal drugs
Atractylode lancea (Thunb) DC. is perennial plant [1], which is known to be widely distributed to the north of Yangtze river in China. Their dried rhizomes, which have been used for diuretic and analgesic purposes as well as for stomach disorders in Traditional Chinese Medicine, are described in Chinese Pharmacopoeia as the botanical origin of the crude drug "Cangzhu".
It is well known that Mao-A. lancea in Mt. Maoshan of Jiangsu province is a kind of geoherb, with the conception arising from traditional Chinese medicine and subjecting at least two meanings: 1) producing from a specific habitat and adapting well to the habitat, 2) having good curative effects with fewer side effects. In another words, Mao-A. lancea is a chemical type & ecotype apposite to Mt. Maoshan habitat and a geographical indicating product based on their good reputation.
In the past few years, Mao-A. lancea decreased sharply and even faced imminence because of over collecting and the habitat losing. The highest annual purchasing amount of Mao-A. lancea was 6,000 kilogramme in history, but Mao-A. lancea have been hardly purchased since 1990's [2]. In order to change the imminent status, some A. lancea are cultivated in Jiangsu and Hubei provinces now, but the output and quality of the cultivated A. lancea are unstable which mainly attribute to the unsuited habitat [3] ......
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