北京林业大学学报Issue(5)：62-67,6.DOI:10.13332/j.cnki.jbfu.2014.05.013
3种典型沙生灌木NPP及其分配格局
NPP and its distribution pattern of three typical sandy shrubs
摘要
Abstract
Net primary productivity ( NPP) is an important index for evaluating carbon budgets of ecosystem. In order to determine the NPP of three kinds of typical sandy shrubs, harvest method and ingrowth cores method were used to determine aboveground and belowground growth, and elemental analyzer was used to measure each organ carbon content rate. The results showed that NPP of Astragalus mongolicum, Salix psammophila and Artemisia ordosica was 63. 13, 96. 39 and 63. 98 g/(m2·year). The growth ratios of root to shoot of A. mongolicum, S. psammophila and A. ordosica were 2. 71, 2. 02 and 1. 32, respectively. Three shrub species were accordance with isometric allocation relationship between the growth of above- and belowground parts. The findings suggest that the belowground NPP of A. mongolicum, S. psammophila and A. ordosica can be estimated based on the aboveground NPP.关键词
杨柴/沙柳/沙蒿/净初级生产力/等速生长Key words
Astragalus mongolicum/Salix psammophila/Artemisia ordosica/net primary productivity/isometric growth分类
农业科技引用本文复制引用
赵灿,张宇清,秦树高,赖宗锐,刘加彬,法科宇..3种典型沙生灌木NPP及其分配格局[J].北京林业大学学报,2014,(5):62-67,6.基金项目
“十二五”国家科技支撑计划项目(2012BAD16B02)。 （2012BAD16B02）
