摘要
放牧是草地生态系统的主要利用方式。植物通过其功能性状的改变来响应放牧的干扰,研究主要集中于地上茎、叶等功能构件不同生态性状对放牧干扰的差异性响应,体现了植物在放牧压力下资源获取最大化的适应对策,也是物种应对干扰所表现出的各自独特生存策略。这种以个体生态学特征为依据的研究方法,弥补了传统分类方法在生态学应用方面的不足,为开展放牧干扰生态研究提供了崭新的视角,具有重要的生态学和生物进化意义。本文介绍了植物功能性状的定义及其构建模式,总结了不同放牧强度下植物功能性状的表型可塑性表达,归纳了放牧干扰下功能性状的权衡策略,强调了个体功能性状对于大尺度草地放牧利用中体现出的独特价值,最后提出相关研究中存在的问题及未来发展方向。
Grazing is a major mode of grassland use. Plants are likely to respond positively to grazing disturbance through changes in their functional traits. The researches of plant traits mainly focus on different responses of ecological traits of aboveground functional components, such as stem and leaf, to grazing disturbance. The changes of plant traits reflect the adaptive strategy of maximum resources gain rate, and even are specific manifestation about their own unique survival strategy under grazing pressures. This research method, based on individual ecological characteristics, makes up for some deficiencies of the traditional classification method and is an important tool to study grazing disturbance ecology, and even has the important significance of ecology and evolutionary biology. This paper introduces the definition of plant functional trait and its assembly pattern, summarizes the phenotypic plasticity of plant functional traits, sums up their tradeoff strategy under different grazing intensities, emphasizes the unique value of individual plant functional traits to grassland use, and ultimately puts forward the existing problems and development direction in the future.
出处
《生态学杂志》
CAS
CSCD
北大核心
2016年第7期1916-1926,共11页
Chinese Journal of Ecology
基金
国家自然科学基金(31402120)
青海省科技支撑项目(2013-N-146-3)
青海省科技支撑项目(2015-SF-A4-2)
中国科学院STS计划项目(KFJSW-STS-177)
国家科技支撑计划项目(2012BAD13B01)资助
关键词
放牧
干扰响应
功能性状
属性分布
营养价值评定
grazing
disturbance response
functioml trait
attribute distribution
nutrient value assessment.
