黄土高原优势灌丛营养器官化学计量特征的环境分异和机制

李单凤, 于顺利, 王国勋, 方伟伟

Environmental heterogeneity and mechanism of stoichiometry properties of vegetative organs in dominant shrub communities across the Loess Plateau

LI Dan-Feng,YU Shun-Li,WANG Guo-Xun,FANG Wei-Wei

表3 黄土高原优势灌丛分布区间的土壤养分差异(平均值±标准偏差)

Table 3 Differences of soil nutrients in the dominant shrub communities across the Loess Plateau (mean ± SD)

养分 Nutrients	n	甘肃南部 Southern Gansu	宁夏北部 Northern Ningxia	甘肃西部 Western Gansu
土壤全碳 Soil total carbon (mg·g^-1)	39	3.35 ± 2.03^a	1.24 ± 0.55^b	1.48 ± 0.27^b
土壤全氮 Soil total nitrogen (mg·g^-1)	51	0.230 ± 0.17^a	0.074 ± 0.06^b	0.024 ± 0.01^b
土壤全磷 Soil total phosphorous (mg·g^-1)	33	0.73 ± 0.16^a	0.46 ± 0.16^b	0.43 ± 0.14^b