毛乌素沙地植被不同恢复阶段植物群落物种多样性、功能多样性和系统发育多样性

姜晓燕, 高圣杰, 蒋燕, 田赟, 贾昕, 查天山

Species diversity, functional diversity, and phylogenetic diversity in plant communities at different phases of vegetation restoration in the Mu Us sandy grassland

Xiaoyan Jiang, Shengjie Gao, Yan Jiang, Yun Tian, Xin Jia, Tianshan Zha

表1 毛乌素沙地植被不同恢复阶段植物群落特征及土壤总碳、氮、磷含量(平均值 ± 标准误差)

Table 1 Plant community characteristics and soil carbon, nitrogen and phosphorous contents at different phases of vegetation restoration in the Mu Us sandy grassland (mean ± SE)

恢复阶段 Restoration phases	植被盖度 Vegetation cover (%)	土壤全碳含量 Soil total C content (g/kg)	土壤全氮含量 Soil total N content (g/kg)	土壤全磷含量 Soil total P content (g/kg)	土壤氮磷比 Soil N : P	土壤碳氮比 Soil C : N	优势种 Dominant species
半固定沙地 Semi-fixed dunes (D1), n = 3	26.30 ± 1.84^a	0.92 ± 0.03^a	0.05 ± 0.01^a	0.20 ± 0.01^a	0.24 ± 0.03^a	20.14 ± 2.40^a	杨柴、赖草、油蒿、草木樨状黄耆、沙生针茅、虫实、沙米 Hedysarum leave, Leymus secalinus, Artemisia ordosica, Astragalus melilotoides, Stipa glareosa, Corispermum hyssopifolium, Agriophyllum squarrosum
固定沙地 Fixed dunes (D2), n = 4	34.55 ± 2.00^b	1.56 ± 0.19^b	0.08 ± 0.00^ab	0.21 ± 0.00^b	0.40 ± 0.02^a	18.76 ± 2.23^a	油蒿、柠条、赖草、草木樨状黄耆、阿尔泰狗娃花、乳浆大戟 Artemisia ordosica, Caragana korshinskii, Leymus secalinus, Astragalus melilotoides, Heteropappus altaicus, Euphorbia esula
结皮覆盖沙地 Fixed dunes covered with crusts (D3), n = 4	55.33 ± 1.74^c	2.55 ± 0.09^c	0.15 ± 0.02^bc	0.28 ± 0.02^b	0.53 ± 0.07^ab	17.88 ± 2.73^a	油蒿、白草、地稍瓜、杨柴、阿尔泰狗娃花 Artemisia ordosica, Pennisetum centrasiaticum, Cynanchum thesioides, Hedysarum leave, Heteropappus altaicus
草本植物覆盖沙地 Fixed dunes with herbs (D4), n = 5	69.19 ± 1.24^d	3.14 ± 0.20^d	0.23 ± 0.04^c	0.31 ± 0.03^b	0.75 ± 0.13^b	15.09 ± 2.22^a	油蒿、沙木蓼、阿尔泰狗娃花、沙柳、杨柴、白草、赖草、鹅绒藤 Artemisia ordosica, Atraphaxis bracteata, Heteropappus altaicus, Salix cheilophila, Hedysarum leave, Pennisetum centrasiaticum, Leymus secalinus, Cynanchum chinense