应用生态学报2017，Vol.28Issue(4)：1061-1068,8.DOI:10.13287/j.1001-9332.201704.039
氮磷添加对栓皮栎不同地理种源幼苗温度耐性的影响
Effects of nitrogen and phosphorus addition on leaf thermal tolerance in different provenances of Quercus variabilis
摘要
Abstract
To explore potential effects of soil nutrient on leaf thermal tolerance across geographical origins,five provenance,i.e.,Chengbu of Hunan (CB),Zigui of Hubei (ZG),Neixiang of Henan (NX),Lincheng of Heibei (LC) and Pinggu of Beijing (PG),seedlings of Quercus variabilis were cultivated under nitrogen and phosphorus addition.Leaf thermal tolerance parameters (cold,heat and span),nutrient concentrations (nitrogen and phosphorus),nitrogen use efficiency (NUE) and phosphorus use efficiency (PUE),as well as non-structural carbohydrate (soluble sugar and starch) concentrations were analyzed.The results were shown as follows:Nutrient absorption and utilization efficiency varied between oak origins with no obvious geographical trends.PG had higher nutrient use efficiency (NUE and PUE),whereas NX had lower PUE under all treatments.CB had the highest PUE under phosphorus addition.Compared with the control,nutrient addition increased the cold tolerance of PG and LC,and to some extent,increased the heat tolerance of the three middle provenances (ZG,NX,LC).However,the thermal span was opposite to thecold tolerance,as nutrient addition decreased the thermal span of PG and LC but increased that of NX.The leaf cold tolerance had significantly positive correlation with soluble sugar concentration,while the heat tolerance negatively and positively corrclated with leaf phosphorus and ratio of nitrogen to phosphorus,respectively.No significant correlation was found between leaf thermal span and leaf chemical substances.To sum up,nutrient use efficiency varying in provenances might be contributed by the original habitats and consequently presented with some local adaptation characteristics,which complicated the response of thermal tolerance to nutrient addition.关键词
温度耐性/养分/非结构性碳水化合物/地理种源/栓皮栎Key words
thermal tolerance/nutrient/non-structural carbohydrate/provenance/Quercus variabilis引用本文复制引用
倪妍妍,胡军,刘建锋,王小菲,张玉婷,江泽平..氮磷添加对栓皮栎不同地理种源幼苗温度耐性的影响[J].应用生态学报,2017,28(4):1061-1068,8.基金项目
本文由国家自然科学基金项目(41371075)和北京市自然科学基金项目(8152032)资助 This work was supported by the National Natural Science Foundation of China (41371075) and the Natural Science Foundation of Beijing (8152032). （41371075）
