应用生态学报2012，Vol.23Issue(6)：1441-1446,6.
生境变化对栓皮栎幼苗营养元素含量的影响
Effects of habitat change on nutrient contents in Quercus variabilis seedlings
摘要
Abstract
Quercus variabilis seedlings were collected from the habitats at different latitudes, and transplanted on the same experimental sites installed in the central part and southern and northern boundaries of China, where Q. variabilis has a natural distribution, aimed to study the effects of habitat change on the nutrient contents in the seedlings in their vigorous growth period. With habitat change, the various organs nitrogen (N) content and the stem phosphorous ( P) content of the transplanted seedlings changed significantly, but the organs potassium ( K) content and the leaf-and root P content had less change. In the experimental sites, the organ N content of the transplanted seedlings had significant positive correlation with the latitudes where the seedlings grew, the stem- and root P contents decreased with the increasing latitude, while the leaf N; P ratio had less change. The organ N and P contents of the transplanted seedlings growing in northern boundary decreased significantly, and the effect of the latitudes was more obvious. The leaf N:P ratio of all the seedlings transplanted from different altitudes increased to different degrees. It was concluded that the nutrient contents in different organs of Q. variabilis seedlings varied with latitude, and the seedlings had different responses to habitat change.关键词
种源试验/栓皮栎/氮/磷/钾/氮磷比Key words
provenance test/ Quercus variabilis/ nitrogen/ phosphorus/ potassium/ N/P ratio分类
农业科技引用本文复制引用
雷静品,熊定鹏,刘建锋,肖文发,王鹏程,潘磊..生境变化对栓皮栎幼苗营养元素含量的影响[J].应用生态学报,2012,23(6):1441-1446,6.基金项目
国家林业局林业公益性行业科研专项(200804001)资助. （200804001）
