长期围封恢复对科尔沁沙地严重沙漠化草地植物群落的影响

曹雯婕, 陈云, 李玉强, 王旭洋, 龚相文, 郭紫晨

Impact of long-term enclosure of severely desertified grasslands on plant communities in the Horqin Sandy Land

Wenjie Cao, Yun Chen, Yuqiang Li, Xuyang Wang, Xiangwen Gong, Zichen Guo

表3 土壤理化性质对植物群落影响的RDA分析

Table 3 The results of RDA revealed the impact of soil physicochemical properties on plant communities

变量 解释率/% pseudo-F P SOC 38.4 64.1 0.002 土壤容重 10.2 20.2 0.002 土壤含水量 2.9 6.0 0.004 田间持水量 1.3 2.7 0.076 pH 1.1 2.3 0.100 土壤N∶P 0.9 1.9 0.152 黏粉粒含量 0.7 1.5 0.254