毛乌素沙地沙丘不同固定阶段黑沙蒿叶性状特征

代远萌, 李满乐, 徐铭泽, 田赟, 赵洪贤, 高圣杰, 郝少荣, 刘鹏, 贾昕, 查天山

Leaf traits of Artemisia ordosica at different dune fixation stages in Mau Us Sandy Land

DAI Yuan-Meng, LI Man-Le, XU Ming-Ze, TIAN Yun, ZHAO Hong-Xian, GAO Sheng-Jie, HAO Shao-Rong, LIU Peng, JIA Xin, ZHA Tian-Shan

表1 毛乌素沙地沙丘不同固定阶段植被特征和土壤理化性质(平均值±标准误)

Table 1 Vegetation characteristics and soil physical-chemical properties at different dune fixation stages in Mau Us Sandy Land (mean ± SE)

植被特征与土壤指标 Vegetation characteristic and soil indicator	半固定沙丘 Semi-fixed dune stage	固定沙丘 Fixed dune stage	土壤结皮固定沙丘 Fixed dune covered with biological soil crusts	草本植物固定沙丘 Fixed dune with abundant herbaceous plant
植被覆盖度 Vegetation coverage (%)	23.29 ± 2.39^a	30.27 ± 2.32^a	46.43 ± 3.19^b	61.80 ± 2.80^c
黑沙蒿覆盖度 Coverage of Artemisia ordosica (%)	11.54 ± 1.24^a	22.11 ± 1.72^b	35.24 ± 1.37^c	38.23 ± 2.84^c
土壤有机碳含量 Soil organic carbon content (g·kg^-1)	0.55 ± 0.02^a	2.40 ± 0.23^b	0.94 ± 0.02^a	1.43 ± 0.05^a
土壤全氮含量 Soil total nitrogen content (g·kg^-1)	0.22 ± 0.01^a	0.31 ± 0.04^b	0.24 ± 0.01^ab	0.30 ± 0.01^ab
土壤全磷含量 Soil total phosphorus content (g·kg^-1)	0.05 ± 0.00^a	0.19 ± 0.02^b	0.07 ± 0.00^a	0.12 ± 0.01^a
优势物种 Dominant species	黑沙蒿、塔落岩黄耆、虫实、草木樨状黄耆、沙蓬 Artemisia ordosica, Corethrodendron lignosum var. leave, Corispermum sp., Astragalus melilotoides, Agriophyllum squarrosum	黑沙蒿、柠条锦鸡儿、草木樨状黄耆、华北白前、达乌里胡枝子 Artemisia ordosica, Caragana korshinskii, Astragalus melilotoides, Vincetoxicum mongolicum, Lespedeza davurica	黑沙蒿、塔落岩黄耆、草木樨状黄耆、华北白前、中华草沙蚕 Artemisia ordosica, Corethrodendron lignosum var. leave, Astragalus melilotoides, Vincetoxicum mongolicum, Tripogon chinensis	黑沙蒿、塔落岩黄耆、赖草、糙隐子草、华北白前 Artemisia ordosica, Corethrodendron lignosum var. leave, Leymus secalinus, Cleistogenes squarrosa, Vincetoxicum mongolicum