Vegetation and Soil Characteristics During Restoration of Grazing Rest in Warm Season of Degraded Alpine Meadows

doi:10.11733/j.issn.1007-0435.2022.01.018

Acta Agrestia Sinica ›› 2022, Vol. 30 ›› Issue (1): 144-152.DOI: 10.11733/j.issn.1007-0435.2022.01.018

Vegetation and Soil Characteristics During Restoration of Grazing Rest in Warm Season of Degraded Alpine Meadows

ZHANG Guang-ru^1,3, LUO Fang-lin^1,3, ZHANG Fa-wei¹, ZHU Jing-bin², HE Hui-dan², YANG Yong-sheng¹, WANG Chun-yu^1,3, LI Ying-nian¹

1. Northwest Institute of Plateau Biology Key Laboratory of Adaptation and Evolution of Plateau Biota, Chinese Academy of Sciences, Xining, Qinghai Province 810008, China;
2. Zaozhuang University, Zaozhuang, Shandong Province 277100, China;
3. University of Chinese Academy of Sciences, Beijing 100049, China

Received:2021-05-19 Revised:2021-07-30 Published:2022-01-27

退化高寒草甸暖季休牧恢复过程中植被和土壤特性

张光茹^1,3, 罗方林^1,3, 张法伟¹, 祝景彬², 贺慧丹², 杨永胜¹, 王春雨^1,3, 李英年¹

1. 中国科学院西北高原生物研究所高原生物适应与进化重点实验室，青海西宁 810008;
2. 枣庄学院，山东枣庄 277100;
3. 中国科学院大学, 北京 100049

通讯作者: 张法伟, E-mail: mywing963@126.com
作者简介:张光茹(1994-)，女，山东省诸城市，硕士研究生，主要从事全球变化生态学研究，E-mail: 18404967849@163.com
基金资助:
国家重点研发计划项目(2017YFA0604801)；中国科学院青海省人民政府三江源国家公园联合研究专项(LHZX-2020-07)；国家自然科学基金面上项目(41877547)；国家自然基金青年基金项目(32001149)资助

Abstract

Abstract: In order to investigate the recovery characteristics of vegetation and soil in degraded alpine meadows restoration during warm season, this study investigated the vegetation and soil characteristics of degraded alpine Kobresia meadows in Zeku at the different recovery stages during rest grazing warm season. The results show that the ecological characteristics of vegetation height, above-ground biomass, soil water content and soil organic carbon content continue to improve over time (P < 0.05), and reached a maximum at the end of restoration period (9 to 10 years). Recovery effects such as vegetation cover, below-ground biomass, diversity and soil capacity increased gradually and tend to be stable in the later and end recovery stages. With the extension of rest grazing time, the survival state index of Elymus nutans gradually increased, and reached 10.27 at the end of recovery period, while the survival state index of the indicator species of vegetation degradation, Ligularia fulgula and Saussurea nigrescens, decreased gradually, which were gradually replaced, from high dominant species, by species such as Elymus nutans. The comprehensive evaluation of grassland quality suggested that the grassland quality score was the best at the end of the restoration period. This study provided a theoretical basis for promoting the implementation of warm-season no grazing to restore degraded alpine meadows.

Key words: Grazing exclusion in warm season, Vegetation, Soil physical and chemical properties, Index of vegetation living state, Comprehensive evaluation of grassland quality

摘要： 为探讨暖季休牧恢复过程中退化高寒草甸植被和土壤恢复特性，本研究对泽库县退化高山嵩草草甸暖季休牧样地不同恢复阶段植被和土壤特性进行调查，结果显示植被高度、地上生物量、土壤含水量、土壤有机碳含量等生态功能属性随自然恢复时间的延长不断得到改善(P < 0.05)，在恢复末期(9—10年)恢复最好；植被盖度、地下生物量、多样性、土壤容重等恢复效果逐渐增强，并在恢复后期、恢复末期趋于稳定；随着休牧时间的延长，垂穗披碱草(Elymus nutans)生存状态指数逐渐增大，在恢复末期达到了10.27，而植被退化的指示物种黄帚橐吾(Ligularia virgaurea)和瑞苓草(Saussurea nigrescens)生存状态指数逐渐减小，从较高的优势物种逐渐被垂穗披碱草等物种所替代。对草地质量进行综合评价发现，暖季休牧样地草地质量在恢复末期的草地质量评分最好。本研究为推广实施暖季休牧来恢复退化高寒草甸提供了理论基础。

关键词: 暖季休牧, 植被, 土壤理化性质, 生存状态指数, 综合评价

CLC Number:

S812

ZHANG Guang-ru, LUO Fang-lin, ZHANG Fa-wei, ZHU Jing-bin, HE Hui-dan, YANG Yong-sheng, WANG Chun-yu, LI Ying-nian. Vegetation and Soil Characteristics During Restoration of Grazing Rest in Warm Season of Degraded Alpine Meadows[J]. Acta Agrestia Sinica, 2022, 30(1): 144-152.

张光茹, 罗方林, 张法伟, 祝景彬, 贺慧丹, 杨永胜, 王春雨, 李英年. 退化高寒草甸暖季休牧恢复过程中植被和土壤特性[J]. 草地学报, 2022, 30(1): 144-152.

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Vegetation and Soil Characteristics During Restoration of Grazing Rest in Warm Season of Degraded Alpine Meadows

退化高寒草甸暖季休牧恢复过程中植被和土壤特性

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