Plant community characteristics, soil nutrients and their interactions in artificial grassland with different establishment years in the Three Rivers Headwater Region

IF 1.1 4区 农林科学 Q3 AGRICULTURE, MULTIDISCIPLINARY
Yan-di She, Hua-kun Zhou, Zhong-hua Zhang, Rui-min Qin, Tao Chang, Hong-ye Su, Jing-jing Wei, Hong-lin Li, Li Ma
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引用次数: 0

Abstract

Clarifying the relationship between plant and soil characteristics under different establishment years of artificial grassland can improve the adaptive management ability of alpine grassland, which is of great significance to the sustainable development of alpine grassland ecosystems. This study used field quadrat surveys and indoor analyses to determine the plant community and soil nutrient characteristics of artificial grasslands with different establishment years and analyzed the characteristic differences and internal relations under different establishment years combined with correlation analysis and redundancy analysis. The results showed that the vegetation coverage decreased significantly (p < .05) after the establishment of 5 years, the biomass of artificial grassland decreased with the increase in establishment years and the species diversity index showed a “V-shaped” change. With the increase in establishment years, the total nutrients of the artificial grassland increased, and the available nutrients decreased. The results of correlation analysis and redundancy analysis showed that soil nutrients in the 0–30 cm soil layer were intrinsically correlated with biomass and soil pH, soil water content and soil bulk density were significantly correlated with plant community changes during the establishment of artificial grassland. This study will help to clarify the changes in plant and soil characteristics of artificial grassland with different establishment years and provide a scientific and theoretical basis for restoring degraded alpine grassland.

三江源区不同建立年限人工草地植物群落特征、土壤养分及其相互作用
明确不同人工草地建立年限下植物与土壤特征的关系,可以提高高寒草地的适应性管理能力,对高寒草地生态系统的可持续发展具有重要意义。本研究采用野外样方调查和室内分析相结合的方法,确定了不同建立年份的人工草地植物群落和土壤养分特征,并结合相关分析和冗余分析,分析了不同建立年份下的特征差异和内在关系。结果表明:植被盖度在建立5年后显著降低(p < 0.05),人工草地生物量随着建立年限的增加而减少,物种多样性指数呈“v”型变化。随着建立年限的增加,人工草地的总养分增加,速效养分减少。相关分析和冗余分析结果表明,在人工草地建设过程中,0 ~ 30 cm土层土壤养分与生物量和土壤pH具有内在相关性,土壤含水量和土壤容重与植物群落变化具有显著相关性。本研究将有助于阐明不同建立年份人工草地植物和土壤特征的变化,为退化高寒草地的恢复提供科学理论依据。
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来源期刊
Grassland Science
Grassland Science Agricultural and Biological Sciences-Agronomy and Crop Science
CiteScore
2.70
自引率
7.70%
发文量
38
审稿时长
>12 weeks
期刊介绍: Grassland Science is the official English language journal of the Japanese Society of Grassland Science. It publishes original research papers, review articles and short reports in all aspects of grassland science, with an aim of presenting and sharing knowledge, ideas and philosophies on better management and use of grasslands, forage crops and turf plants for both agricultural and non-agricultural purposes across the world. Contributions from anyone, non-members as well as members, are welcome in any of the following fields: grassland environment, landscape, ecology and systems analysis; pasture and lawn establishment, management and cultivation; grassland utilization, animal management, behavior, nutrition and production; forage conservation, processing, storage, utilization and nutritive value; physiology, morphology, pathology and entomology of plants; breeding and genetics; physicochemical property of soil, soil animals and microorganisms and plant nutrition; economics in grassland systems.
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