Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2020, Vol. 36 ›› Issue (7): 44-49.doi: 10.11924/j.issn.1000-6850.casb18110111

Previous Articles     Next Articles

Historical Changes of Plant Community Structure and Biodiversity of Linpan: A Case Study in Pi County of Chengdu

Li Yuan1, Min Qingwen2, Yang Liyun1, Meng Fanxu1, Yang Wanquan3   

  1. 1 College of Metallurgy and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083
    2 Institute of Geography and Resources of the Chinese Academy of Sciences, Beijing 100101
    3 Agricultural Cultural Heritage Management Office, Pixian Agriculture and Forestry Bureau of Chengdu, Chengdu 611730
  • Received:2018-11-27 Revised:2019-03-15 Online:2020-03-05 Published:2020-03-02

Abstract:

Linpan is a traditional rural settlement unit with distinctive characteristics and outstanding agricultural heritage conservation values in Chengdu plain. Plant is the key component of Linpan system and the study on historical change features of plant community can provide a scientific guidance for conservation efforts of Linpan in the study area. First, we analyzed the historical plant community structures by referring to historical data. Then a plant community investigation of 4 representative Linpan plots and 3 wood land plots along irrigation ditch was conducted in Pi County, Chengdu. Finally, we compared the plant community structures in different periods. The main changes of Linpan plant community include: Phoebe zhennan, Cunninghamia lanceolata and Platycladus orientalis were the dominant species in traditional Linpan, but now they have been replaced by Lindera megaphylla. An obvious degradation of bamboo forest could be observed in the study region. The species used to be prevalent in the wood land along irrigation ditch were Alnus cremastogyne and Platycladus orientalis, however these species have been replaced by Pterocarya stenoptera and Broussonetia papyrifera. Bamboo is not observed in the wood land along irrigation ditch. The social and economic changes in Pi County break the relationship between population, farm land and Lipan and ultimately result in the plant community changes.

Key words: agricultural heritage, dynamic conservation, community structure, biodiversity, Linpan

CLC Number: