3.1. the CVinter andCVintra of root system architecture traits
Interspecific variation (CV inter) can reflect the
long-term adaptation of root system to the environment, while
intraspecific variation (CV intra) is an important
indicator of trait plasticity. The CV inter andCV intra are important ecological indicators. TheCV inter of RTD is the highest at 51.63%, while
TI is the lowest at 5.92% (Table1). The CV intraranges of SRA, SRL, and RTD are relatively large, ranging from 11.77 to
75.76%, 14.02 to 86.51%, and 4.17 to 78.45%, respectively. However,
the CV intra range of TI is the smallest, ranging
from 0.30 to 10.62% (Fig. 3).
Table 1. Characteristics and interspecific variation coefficients of
root system architecture of 47 annual ephemerals in desert of northern
Xinjiang, China