作为荒漠化地区一种新型固沙方法，通过接种荒漠蓝藻促进生物结皮发育是由我国科研人员率先开展的一项创新性研究。本项目基于上述研究一方面拟通过接种蓝藻促进生物结皮恢复跟踪监测结皮早期形成发育过程；另一方面通过调查目前已经接种蓝藻恢复生物结皮示范区中结皮发育演替状况，从而探究接种环境条件对生物结皮发育演替的影响；通过结皮代谢活性监测与土壤理化分析对结皮及土壤生态功能进行动态、系统研究，探究接种蓝藻对荒漠土壤生态功能的改善作用；通过显微观察、克隆、高通量测序以及叶绿素荧光成像技术分析结皮群落结构组成以及分布模式，最终揭示荒漠地区接种蓝藻对于促进生物结皮发育演替以及土壤生态功能改善的内在生物学机制及其环境调控作用。本项研究的开展不仅对揭示生物结皮发育演替机理、探究荒漠生态功能改善的可能与机制具有重要价值，也将为人工接种蓝藻后结皮的维护管理以及在荒漠化治理方面的应用提供重要的理论基础与科学依据。

As a new sand-fixing method in desertification control, to promote the development of biological soil crusts (BSCs) via inoculating desert cyanobacteria is an innovative study first conducted by our researchers. Base on the above study, this project on the one hand intends to track and monitor the course of early cyanobacterial crust formation and development after cyanobacterial inoculation; on the other hand to investigate crust development and succession in the Crust Recovery Demonstration Zone where cyanobacteria have been inoculated in the different years, studying the effects of inoculating environmental conditions on the formation, development and succession of BSCs. In addition, in this project crust metabolic activity and soil physical and chemical characteristics are planned to analyze, in order to dynamically and systematically research crust and soil ecological functions, aiming at exploring the improving effects of cyanobacterial inoculation on desert soil ecological functions; as well as microscopic observation, cloning, high-throughput sequencing and chlorophyll fluorescence imaging technologies will be conjunctively used to analyze crust community structure and distribution patterns, and ultimately revealing the inherent biological mechanisms and their environmental regulation effects on the promotion of biological soil crust development and succession, and improvement of soil ecological functions after cyanobacterial inoculation in desert region. The results will not only be of great value in discussing the development and succession of BSCs, exploring the possibility and mechanisms of improving desert ecological functions from a point of view of crust recovery, but also provide an important theoretical guidance and scientific basis for the maintenance and management of BSCs, as well for crust application via cyanobacterial inoculation in desertification control.