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草业学报 ›› 2019, Vol. 28 ›› Issue (6): 1-18.DOI: 10.11686/cyxb2018337

• 研究论文 • 上一篇    下一篇

基于GIS的中国2大草地分类系统类的兼容性分析

柳小妮1,2, 张德罡1,2,*, 王红霞1, 任正超3, 韩天虎4, 孙斌4, 潘冬荣4, 王波1   

  1. 1.甘肃农业大学草业学院,甘肃 兰州 730070;
    2.甘肃农业大学草业生态系统教育部重点实验室,甘肃 兰州 730070;
    3.甘肃农业大学财经学院,甘肃 兰州 730070;
    4.甘肃省草原推广总站,甘肃 兰州 730000
  • 收稿日期:2018-05-22 修回日期:2018-10-18 出版日期:2019-06-20 发布日期:2019-06-20
  • 通讯作者: *E-mail: zhangdg@gsau.edu.cn
  • 作者简介:柳小妮(1969-),女,甘肃静宁人,教授,博士。 E-mail: Liuxn@gsau.edu.cn
  • 基金资助:
    国家自然科学基金(31160475)和甘肃省草原总站“草原综合顺序分类法在甘肃省草原资源调查中的应用及其与中国草地分类系统的整合研究”项目资助

GIS-based analysis of the compatibility of two grassland classification systems in China

LIU Xiao-ni1,2, ZHANG De-gang1,2,*, WANG Hong-xia1, REN Zheng-chao3, HAN Tian-hu4, SUN Bin4, PAN Dong-rong4, WANG Bo1   

  1. 1.College of Pratacultural Science, Gansu Agricultural University, Lanzhou 730070, China;
    2.Key Laboratory of Grassland Ecosystem, Ministry of Education, Pratacultural Engineering Laboratory of Gansu Province, Lanzhou 730070, China;
    3.College of Finance and Economics, Gansu Agricultural University, Lanzhou 730070, China;
    4.Grassland Technique Extension Station of Gansu Province, Lanzhou 730000, China
  • Received:2018-05-22 Revised:2018-10-18 Online:2019-06-20 Published:2019-06-20
  • Contact: * E-mail: zhangdg@gsau.edu.cn

摘要: 以植被-生境学分类(vegetation-habitat classification system of grassland,VHCS)方法为基础的定性的中国草地分类系统,以及定量的气候-土地-植被综合顺序分类系统(comprehensive and sequential classification system of grassland,CSCS)是我国常用的2大草地分类系统。在实际应用中,因“草原”和“草地”概念的重叠、混淆和交叉,以及定性分类和定量分类的差异,造成了操作上的困扰,研究结果亦不便相互交流。本研究通过2大系统一级单位-“类”的分类指标、名称和属性的对比,分析了2个系统“类”的兼容性,建立了两者间的对应关系,并利用基本同期的CSCS分类图和数字化的中国草地资源图(VHCS),以内蒙古自治区和甘肃省为例,在ArcGIS平台上进行了验证分析。研究结果表明:1)以广义草原或草地概念为基础的CSCS是一个大系统,兼容了以中国为例的VHCS分类系统;2)兼容VHCS的CSCS的类,两者在分类指标、名称和属性方面均能达到统一;3)空间叠置分析表明,若不考虑森林和非地带性类,内蒙古和甘肃区域2个分类系统分类结果的兼容性分别达到61.4%和61.1%;有差异的区域,基本上表现出草地实际调查结果(VHCS)是比原生潜在草地(CSCS)在更恶劣气候条件下的低分类级别的草地类,说明人为干扰已超过了原生草地生态系统的生存阈限,导致草地逆行演替;4)对CSCS与VHCS分类结果的对比分析研究,可科学地揭示人为干扰下草地的演替状态,并明确草地恢复和重建的目标。

关键词: 草地, 分类, 综合顺序分类系统, 植被-生境学分类系统, 兼容性

Abstract: The qualitative vegetation-habitat classification system (VHCS) and the quantitative comprehensive and sequential classification system (CSCS) are the two major grassland classification systems in China. However, the use in practice of the classification results from these two systems has been difficult due to the different approaches (qualitative vs quantitative) and grassland definitions adopted by the two systems, causing difficulties in comparing the grassland types classified from these two systems. Through overlaying the CSCS classification map and the digitized VHCS map in ArcGIS for the grasslands in Inner Mongolia Autonomous Region and Gansu Province, this study compared the criterion and characteristics of the two systems at the first classification level (class), analyzed their compatibility and developed the corresponding relationships to translate the types between two systems. The results show: 1) CSCS is generally compatible with VHCS when comparing the broad grassland types (class); 2) at the class level, the VHCS and CSCS system are generally in agreement when comparing the class names, characteristics and parameters used; 3) if not considering forest and non-zoning classes, the results of the spatial overly indicated that the compatibility of two systems can be as high as 61.4% and 61.1% for Inner Mongolia and Gansu, respectively. The areas where the grassland classes from the two systems were different were mainly degraded from the potential natural vegetation (as classified by CSCS) and were observed as classes in the VHCS system as low-level grassland under more severe climate conditions. This indicates that the human disturbance has surpassed the survival thresholds of these potential natural grassland vegetation categories, resulting in retrogressive succession of the grasslands; 4) the results from the comparative analyses of the CSCS and VHCS systems provided insight into the succession mechanisms of grassland ecosystems under human disturbance, and are helpful in grassland management with regard to system restoration and reestablishment.

Key words: grassland, classification, comprehensive and sequence classification system, vegetation-habitat classification system, compatibility