基于Meta分析的放牧对黄土高原草地生态系统的影响

doi:10.11733/j.issn.1007-0435.2022.10.028

草地学报 ›› 2022, Vol. 30 ›› Issue (10): 2772-2781.DOI: 10.11733/j.issn.1007-0435.2022.10.028

• • 上一篇

基于Meta分析的放牧对黄土高原草地生态系统的影响

贾涛涛¹, 廖李容², 王杰¹, 刘国彬², 张超¹

1. 西北农林科技大学水土保持研究所, 陕西杨凌 712100;
2. 中国科学院水利部水土保持研究所, 陕西杨凌 712100

收稿日期:2022-04-14 修回日期:2022-05-18 发布日期:2022-11-05
通讯作者: 张超,E-mail:whch_66@163.com
作者简介:贾涛涛(1995-),女,汉族,陕西延安人,硕士研究生,主要从事植被恢复与土壤微生物研究,E-mail:1240855509@qq.com
基金资助:
中国科学院“西部之光”交叉团队项目-重点实验室合作研究专项(2019)；陕西省基础研究计划项目(2021JM-605)资助

Effects of Grazing on Grassland Ecosystem on the Loess Plateau Based on A Meta-Analysis

JIA Tao-tao¹, LIAO Li-rong², WANG Jie¹, LIU Guo-bin², ZHANG Chao¹

1. Institute of Soil and Water Conservation, Northwest A & F University, Yangling, Shaanxi Province 712100, China;
2. Institute of Soil and Water Conservation, Chinese Academy of Science & Ministry of Water Resources, Yangling, Shaanxi Province 712100, China

Received:2022-04-14 Revised:2022-05-18 Published:2022-11-05

摘要/Abstract

摘要： 为明确放牧对黄土高原草地生态系统的整体影响，本文对39篇相关文献进行Meta分析，探讨了放牧对黄土高原草地植被、土壤理化性质和土壤微生物的影响，并进一步分析了影响其放牧效应的相关因素。结果表明：放牧对黄土高原草地植物多样性、土壤细菌丰度和放线菌丰度以及土壤微生物总丰度没有显著影响，但却显著降低了草地的生产力和土壤碳氮磷养分，明显增加了土壤容重、pH值和土壤真菌相对丰度；草地生态系统对放牧的响应受放牧强度和年平均降水量的影响，中度放牧有利于维持植物地下部分的生长，轻度放牧有利于维持土壤水分和养分；在年平均降雨量较低(<300 mm)的干旱地区，植物可能具有更好抵抗放牧干扰的能力，放牧对土壤养分的扰动不严重，在年平均降雨量较高(>400 mm)的湿润地区，放牧更容易改变土壤微生物的群落组成。

关键词: Meta分析, 黄土高原, 放牧强度, 草地生产力, 土壤理化性质, 土壤微生物

Abstract: To clarify the overall influence of grazing on the grassland ecosystem on the Loess Plateau,39 relevant literatures were selected for Meta-analysis to explore the effects of grazing on grassland vegetation,soil physicochemical properties,and soil microorganisms on the Loess Plateau,and further analyzed the relevant factors affecting its grazing effect in this study. The results showed that grazing had no significant effect on grassland plant diversity,soil bacterial abundance,actinomycetes abundance,and total microbial abundance,but significantly reduced grassland productivity and soil carbon,nitrogen,and phosphorus nutrients,and significantly increased soil bulk density,pH,and soil fungal abundance. The response of the grassland ecosystem to grazing was affected by grazing intensity and mean annual precipitation. Moderate grazing is beneficial to maintain the growth of the underground part of plants,and light grazing is beneficial to maintain soil moisture and nutrients. In dry regions with lower mean annual precipitation (< 300 mm),plants may have a better ability to resist grazing disturbance,and the destabilization of grazing on soil nutrients is not serious. In moist regions with higher mean annual precipitation (> 400 mm),grazing is more likely to alter the community composition of soil microorganisms.

Key words: Meta-analysis, Loess Plateau, Grazing intensity, Grassland productivity, Soil physicochemical properties, Soil microorganisms

中图分类号:

S812

贾涛涛, 廖李容, 王杰, 刘国彬, 张超. 基于Meta分析的放牧对黄土高原草地生态系统的影响[J]. 草地学报, 2022, 30(10): 2772-2781.

JIA Tao-tao, LIAO Li-rong, WANG Jie, LIU Guo-bin, ZHANG Chao. Effects of Grazing on Grassland Ecosystem on the Loess Plateau Based on A Meta-Analysis[J]. Acta Agrestia Sinica, 2022, 30(10): 2772-2781.

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基于Meta分析的放牧对黄土高原草地生态系统的影响

Effects of Grazing on Grassland Ecosystem on the Loess Plateau Based on A Meta-Analysis

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