草地牧草生产力对不同放牧强度响应的研究进展  

Progress on Effect of Grazing on Grassland Net Primary Productivity

作　　者：奚小艳 黄小涛 罗格平 周华坤[2,3] 姚步青[2,3] 马真 XI Xiao-yan;HUANG Xiao-tao;LUO Ge-ping(Qinghai Environmental Sciences Research and Design Institute Co.,Ltd.,Xining,Qinghai 810007;Key Laboratory of Restoration Ecology for Cold Regions Laboratory in Qinghai,Northwest Institute of Plateau Biology,Chinese Academy of Sciences,Xining,Qinghai 810008;University of the Chinese Academy of Sciences,Beijing 100049;Xinjiang Institute of Ecology and Geography,Chinese Academy of Sciences,Urumqi,Xinjiang 830011)

机构地区：[1]青海省环境科学研究设计院有限公司,青海西宁810007 [2]中国科学院西北高原生物研究所寒区恢复生态学重点实验室,青海西宁810008 [3]中国科学院大学,北京100049 [4]中国科学院新疆生态与地理研究所荒漠与绿洲生态国家重点实验室,新疆乌鲁木齐830011

出　　处：《安徽农业科学》2021年第12期1-4,共4页Journal of Anhui Agricultural Sciences

基　　金：西部之光(2018)项目“放牧对青海湖流域草地生产力影响的定量研究”。

摘　　要：放牧是草地生态系统最主要的利用方式。草地牧草生产力对不同放牧强度的响应研究一直是草原生态学领域的一个重要科学问题,明确认识该问题对草地生态系统可持续利用至关重要。国内外学者已经针对该问题做了大量研究工作。但对"适度放牧可促进草地牧草生产力"的认识依然存有争论,对放牧对草地牧草生产力影响这一科学问题缺乏深入的机理认识。综述了国内外对该科学问题的研究进展,探讨了研究工作中存在的问题,指出模型模拟结合观测实验数据进行放牧对草地牧草生产力影响的深入机理研究是未来的研究方向。Grazing is the most important use of grassland ecosystem.The effect of grazing on productivity is always an important scientific problem in the field of grassland ecology.Identifying this issue is very important for sustainable utilization of grassland ecosystem.Scholars at home and abroad have done a lot of research on this problem through observation experiments and land ecosystem model simulation.However,there is still a debate on the understanding that"moderate grazing can promote grass productivity".There is a lack of in-depth understanding of the mechanism regarding the impact of grazing on grassland productivity.This paper reviews the research progress of this scientific problem at home and abroad and discusses the weakness regarding to the related research work.At last,it is pointed out that the future research direction is to study the mechanism of the effect of grazing on grassland productivity by combining model simulation with observation experimental data.

关 键 词：草地生态系统 放牧 净初级生产力 生态模型 补偿性生长 

分 类 号：S812[农业科学—草业科学]