摘要
为了解青藏高原高寒草甸土壤碳(Carbon,C)、氮(Nitrogen,N)、磷(Phosphorus,P)化学计量特征对氮、磷添加的响应,提高养分管理水平及草地生态系统的养分平衡。本研究严格筛选出21篇文章(612项数据)进行Meta分析,通过亚组分析分析了不同施肥方式(氮添加、磷添加、氮磷添加)、不同施肥强度(轻度、中度、重度)对青藏高原草地土壤C,N,P化学计量特征的影响。研究结果表明:养分添加显著增加了青藏高原草地土壤C,N,P含量;氮添加对土壤的增加效应随施肥强度增加而增加,磷轻度施肥(20 g·m^(-2)以下)处理、氮磷添加轻度施肥处理下的土壤C,N,P含量及化学计量比增加效果最好。本研究结果总体反映出氮、磷添加对青藏高原高寒草甸土壤产生积极影响,研究结果可为青藏高原草地生态系统的保护提供科学依据。
To understand the response of soil C,N,and P stoichiometric characteristics to N and P addition in alpine meadows on the Tibetan Plateau and improve nutrient management and nutrient balance of grassland ecosystems,21 articles(612 data items) were rigorously selected for Meta-analysis in this study,and the effects of different fertilization methods(N addition,P addition,N+P addition) and different fertilization intensities(light,moderate,and heavy) on soil C,N,and P stoichiometric characteristics of Qinghai-Tibet Plateau meadows were developed through subgroup analysis.The results showed that nutrient addition significantly increased soil C,N,and P contents in Tibetan plateau grassland;the effect of N addition on soil increased with fertilizer application intensity,and the best increase in soil C,N,and P stoichiometric characteristics was observed under light application of phosphorus alone(less than 20 g·m^(-2)) and the combination of nitrogen and phosphorus.Overall,it reflected that N and P additions had positive effects on alpine meadow soils,and the results of the study provided a scientific basis for the conservation of grassland ecosystems in the Qinghai-Tibet Plateau.
作者
林伟山
德科加
张琳
向雪梅
冯廷旭
钱诗祎
魏希杰
耿晓平
LIN Wei-shan;DE ke-jia;ZHANG Lin;XIANG Xue-mei;FENG Ting-xu;QIAN Shi-yi;WEI Xi-jie;GENG Xiao-ping(Academy of Animal Husbandry and Veterinary Science,Qinghai University,Qinghai Academy of Animal Husbandry and Veterinary Science,Xining,Qinghai Province 810016,China;Bureau of Meteorology,Chengduo County,Qinghai Province,Yushuzhou,Qinghai Province 815199,China)
出处
《草地学报》
CAS
CSCD
北大核心
2022年第12期3345-3354,共10页
Acta Agrestia Sinica
基金
国家自然基金项目(31860678)
三江源生态系统教育部野外科学观测站
青海省重点研发与转化计划(2022-NK-114)资助。
关键词
养分添加
土壤理化性质
碳、氮、磷化学计量特征
META分析
Nutrient addition
Physical and chemical properties of soil
Carbon,nitrogen and phosphorus stoichiometry characteristics
Meta-analysis
作者简介
林伟山(1996-),男,藏族,甘肃天祝人,硕士研究生,主要从事草地养分管理研究,E-mail:linws1314@163.com;通信作者:德科加,E-mail:1162157948@qq.com。
