Effects of Different Management Modes on Carbon Storage in Gannan Alpine Meadow

doi:10.11733/j.issn.1007-0435.2020.02.029

Acta Agrestia Sinica ›› 2020, Vol. 28 ›› Issue (2): 529-537.DOI: 10.11733/j.issn.1007-0435.2020.02.029

Effects of Different Management Modes on Carbon Storage in Gannan Alpine Meadow

ZHANG Qian^1,2, WANG Zhi-cheng^1,2, PU Qiang-sheng^1,2, HOU Qi-qi^1,2, CAI Zhi-yuan^1,2, YANG Jing^1,2, YAO Bao-hui^1,2, WANG Chan^1,2, SUN Xiao-mei^1,2,3, SU Jun-hu^1,2

1. College of Grassland Science, Key Laboratory of Grassland Ecosystem(Ministry of Education), Pratacultural Engineering Laboratory of Gansu Province, Sino-U. S. Centers for Grazing land Ecosystem Sustainability, Gansu Agricultural University, Lanzhou 730070, China;
2. Gansu Agricultural University-Massey University Research Centre for Grassland Biodiversity, Gansu Agricultural University, Lanzhou 730070, China;
3. College of Resource and Environmental Science, Gansu Agricultural University, Lanzhou 730070, China

Received:2019-11-20 Revised:2019-12-22 Online:2020-04-15 Published:2020-04-11

不同管理模式对甘南高寒草甸碳储量的影响

张倩^1,2, 王志成^1,2, 蒲强胜^1,2, 侯齐琪^1,2, 蔡志远^1,2, 杨晶^1,2, 姚宝辉^1,2, 王缠^1,2, 孙小妹^1,2,3, 苏军虎^1,2

1. 甘肃农业大学草业学院/草业生态系统教育部重点实验室/甘肃省草业工程实验室/中美草地畜牧业可持续发展研究中心, 甘肃兰州 730070;
2. 甘肃农业大学-新西兰梅西大学草地生物多样性研究中心, 甘肃兰州 730070;
3. 甘肃农业大学资源与环境学院, 兰州 730070

通讯作者: 孙小妹, 苏军虎
作者简介:张倩(1995-),女,汉族,硕士研究生,主要从事草地生态与草地保护研究,E-mail:1634532748@qq.com
基金资助:
金项目：国家自然科学基金项目（31660522，31760706）；甘肃省陇原青年创新创业人才团队项目；甘肃农业大学“伏羲杰出人才”项目（Gaufx-02J03）；甘肃农业大学学科建设专项基金（GSAU-XKJS-2018-016）和甘肃省杰出青年基金（1606RJDA314）资助

Abstract

Abstract: The carbon sink function of alpine grassland plays an important role in regulating climate. In order to clarify the impact of grassland management mode on carbon sink function. In this paper,different management plots of Gannan grassland on the eastern edge of the Qinghai-Tibet Plateau (patch grassland PG,fence enclosure FE,traditional grazing TG,and degraded grassland DG) were taken as research objects. By analyzing species diversity,vegetation carbon storage and soil carbon storage,we compared the characteristics of organic carbon storage changes in vegetation-soil system under different management regimes. The results showed that:the aboveground vegetation carbon storage in PG and FE were significantly higher than that in DG (P<0.05). The root carbon storage in the 0~10 cm layer under PG,TG,and FE were significantly higher than those in the 10~20 cm and 20~30 cm layers (P<0.05). Under different grassland management modes,the carbon storage in the 0~30cm layer of the soil was between 1 500~3 900 g·m^-2,and the carbon storage in the 0~10 cm layer and 10~20 cm layer under the PG were significantly higher than that of the 20~30 cm layer soil carbon storage (P<0.05). From the perspective of vegetation carbon storage and soil carbon storage,the carbon storage in PG,FE and EG were 52.63%,41.62% and 62.53% higher than that of DG. Therefore,the management modes of PG,FE and TG can effectively improve the degraded grassland and increase the carbon storage of the degraded grassland ecosystem.

Key words: Gannan alpine meadow, Management model, Species diversity, Ecosystem carbon storage

摘要： 高寒草甸的碳汇功能对调节气候具有重要的作用，为阐明草地管理模式对其碳汇功能的影响，本文采集青藏高原东缘甘南草地不同管理样地（补播草地PG、围栏封育FE、传统放牧TG及退化草地DG）下土壤和植被样品，通过分析其物种多样性、植被碳储量和土壤碳储量等，研究不同管理模式下植被—土壤系统有机碳储量变化特征。结果表明：PG和FE地上植被碳储量显著高于DG地上植被碳储量（P<0.05），PG，TG和FE下0~10 cm层的根系碳储量显著高于10~20 cm和20~30 cm层根系碳储量（P<0.05）；不同草地管理模式下土壤碳储量（0~30 cm）在1 500~3 900 g·m^-2之间，PG下0~10 cm层和10~20 cm层土壤碳储量显著高于20~30 cm层土壤碳储量（P<0.05）；从植被碳储量和土壤碳储量的角度来看，PG，FE和TG与DG相比较，生态系统碳储量分别增加52.63%，41.62%和62.53%。综上，PG，FE和TG的管理模式能够有效的改善退化草地状况，增加退化草地生态系统的碳储量。

关键词: 甘南高寒草甸, 管理模式, 物种多样性, 生态系统碳储量

CLC Number:

S812

ZHANG Qian, WANG Zhi-cheng, PU Qiang-sheng, HOU Qi-qi, CAI Zhi-yuan, YANG Jing, YAO Bao-hui, WANG Chan, SUN Xiao-mei, SU Jun-hu. Effects of Different Management Modes on Carbon Storage in Gannan Alpine Meadow[J]. Acta Agrestia Sinica, 2020, 28(2): 529-537.

张倩, 王志成, 蒲强胜, 侯齐琪, 蔡志远, 杨晶, 姚宝辉, 王缠, 孙小妹, 苏军虎. 不同管理模式对甘南高寒草甸碳储量的影响[J]. 草地学报, 2020, 28(2): 529-537.

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Effects of Different Management Modes on Carbon Storage in Gannan Alpine Meadow

不同管理模式对甘南高寒草甸碳储量的影响

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