Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2016, Vol. 32 ›› Issue (22): 26-31.doi: 10.11924/j.issn.1000-6850.casb15120123

Special Issue: 农业气象

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Phenological Characteristics of 18 Species Caragana sinica (Buchoz) Rehd. Plants in Arid Desert Area

Zhang Zhiping1,2, Li Delu1, Du Juan1, Wei Linyuan1, Zhang Weixing1   

  1. (1Laboratory of Sand Hazards and Combat Desertification in Gansu Province, Wuwei Gansu 733000; 2Gansu Desert Control Research Institute, Lanzhou 730070)
  • Received:2015-12-22 Revised:2016-05-16 Accepted:2016-05-25 Online:2016-08-09 Published:2016-08-09

Abstract: The aim was to enrich the phenological data of Caragana sinica (Buchoz) Rehd. plants. The 3-year phenological observation data of 18 species of Caragana sinica (Buchoz) Rehd. plants in Minqin desert area were used as material. The phenological types of 4 main phenophases (germination period, sprouting leaves, flowering and fruit ripening) were analyzed by cluster analysis. The phenological types were grouped into 5 layers. The first layer: Caragana purdomii, Caragana zahlbruckneri Schneid., Caragana microphylla, Caragana tibetica, Caragana bongardiana, Caragana Sichuan. The second layer: Caragana stenophylla, Caragana microphylla, Caragana arborescens, Caragana pruinosa, Caragana acanthophylla. The third layer: Caragana intermedia, Caragana korshinskii, Caragana roborovskyi, Caragana opulens. The fourth layer: Caragana rosea, Caragna fruten. The fifth layer: Caragana hololeuca Bunge ex Kom.. The cluster phenological types substantially complied with ecological characteristics of plant, and the result was more scientific and reasonable compared with that of hierarchical clustering method which directly clustered samples.