长期降水量变化下荒漠草原植物生物量、多样性的变化及其影响因素

王晓悦, 许艺馨, 李春环, 余海龙, 黄菊莹

Changes of plant biomass, species diversity, and their influencing factors in a desert steppe of northwestern China under long-term changing precipitation

WANG Xiao-Yue, XU Yi-Xin, LI Chun-Huan, YU Hai-Long, HUANG Ju-Ying

表4 降水量变化下荒漠草原植物多样性与土壤因子的冗余分析中各土壤因子的条件效应

Table 4 Conditional effects of soil factors in redundancy analysis of plant diversity and soil factors in the studied desert steppe under long-term changing precipitation

指标 Index WC EC UA T NH4+-N pH MBP NO3?-N AP C:Nm SA N:Pm F 8.0 6.7 6.0 3.8 3.7 3.7 1.7 1.5 1.5 0.4 0.4 0.3 p 0.008 0.028 0.028 0.058 0.068 0.086 0.212 0.248 0.252 0.548 0.562 0.578