img

Wechat

Adv search

Journal of Desert Research ›› 2023, Vol. 43 ›› Issue (5): 214-222.DOI: 10.7522/j.issn.1000-694X.2023.00071

Previous Articles    

Research progress and prospect of artificial cyanobacteria crusts in China

Yanqiao Zhao1,2(), Yuchao Lian1,2, Wenwen Xu1,2, Yixue Zhao1,2, Gaoling Han1,2, Yang Zhao1()   

  1. 1.Shapotou Desert Research and Experiment Station,Northwest Institute of Eco-Environment and Resources,Chinese Academy of Sciences,Lanzhou 730000,China
    2.University of Chinese Academy of Sciences,Beijing 100049,China
  • Received:2023-05-13 Revised:2023-06-26 Online:2023-09-20 Published:2023-09-27
  • Contact: Yang Zhao

Abstract:

Desertification is one of the main ecological and environmental problems in China. It is urgent to continue to curb desertification and restore desertified land and protect China's green waters and mountains. Ecological restoration and desertification prevention through artificial vegetation, mechanical sand fixation, chemical sand fixation and engineering sand fixation are the main sand control methods and approaches in China, but there are also certain limitations, such as water limitation and environmental pollution. Under the requirements of ecological civilization and green development, higher requirements are put forward for the treatment methods of sand fixation and desertification land. Biological soil crusts (BSCs) are widely distributed in sandy areas in China, and can grow in desert areas with strong arid climate radiation and extremely low precipitation, which can not only reduce the erosion of sand surface, but also increase soil fertility, improve land quality, and control sand surface runoff infiltration balance. Cyanobacteria are pioneer species in the formation of BSCs and play an important role in speciation and succession in the later stages of BSC development. However, the formation of BSCs under natural conditions often takes 10-20 years, so the formation of BSCs is accelerated through artificial cultivation, that is, artificial biological soil crusting and sand fixation technology, which significantly shortens the sand fixation time and accelerates the ecological recovery rate. Based on the research of artificial BSCs, especially artificial cyanobacteria crust, by Chinese scholars in recent years, this paper reviews the selection, cultivation mode/mode, properties and influencing factors of artificial cyanobacteria and their applications, analyzes the main progress of current research, and looks forward to the future research direction of artificial cyanobacteria crust, in order to provide a basis for the research of artificial BSCs in China.

Key words: biological soil crusts, artificial cyanobacteria crusts, desertification, sand area, ecological restoration

CLC Number: