黄土区封育和放牧草地物种多样性和地上生物量对氮素添加的响应
赵洁1, 李伟2, 井光花2, 魏琳2, 程积民1,2,*

Responses of species diversity and aboveground biomass to nitrogen addition in fenced and grazed grassland on the Loess Plateau
ZHAO Jie1, LI Wei2, JING Guang-Hua2, WEI Lin2, CHENG Ji-Min1,2,*
封育草地(F)和放牧草地(G)群落物种组成及重要值对氮素添加的响应 按可食性分组的功能群,其中GG为可食禾草类(包括莎草科)、FG为非禾本科可食草类、NG为可食性低劣或有毒害草类、LG为豆科类。Functional group divided by edibility, GG (grass and sedge species group), FG (forbs species group), NG (noxious species group), LG (leguminous species group). 下同 The same below.1: 甘青针茅 Stipa przewalskyi ;2: 大针茅 Stipa grandis ; 3: 赖草 Leymus secalinus ; 4: 干生苔草 Carex aridula ; 5: 光稃茅香 Anthoxanthum glabrum ; 6:披碱草 Elymus excelsus ; 7: 本氏针茅 Stipa bungeana ; 8: 早熟禾 Poa sphondylodes ; 9: 冰草 Agropyron cristatum ; 10: 甘肃蒿 Artemisia gansuensis ; 11: 甘菊 Chrysanthemum lavandulifolium ; 12: 火绒草 Leontopodium leontopodioides ; 13: 阿尔泰狗娃花 Heteropappus altaicus ; 14: 狼毒 Stellera chamaejasme ; 15: 黄毛棘豆 Oxytropis ochrantha ; 16: 青海苜蓿 Medicago archiducis-nicolaii ; 17: 小果黄耆 Astragalus zacharensis ; 18: 白莲蒿 Artemisia sacrorum ; 19: 百里香 Thymus mongolicus ; 20: 蓬子菜 Viola dissecta ; 21: 翼茎风毛菊 Saussurea japonica var. pteroclada ; 22: 丝毛飞廉 Carduus crispus ; 23: 长柱沙参 Adenophora stenanthina ; 24: 细叶沙参 Adenophora capillaria subsp. paniculata ; 25: 多毛并头黄芩 Scutellaria scordifolia var. villosissima ; 26: 二裂委陵菜 Potentilla bifurca ; 27: 白花枝子花 Dracocephalum heterophyllum ; 28: 蚓果芥 Neotorularia humilis ; 29: 急折百蕊草 Thesium refractum ; 30: 细叶远志 Polygala sibirica ; 31: 野韭 Allium ramosum ; 32: 北柴胡 Bupleurum chinense ; 33: 西山委陵菜 Potentilla sischanensis ; 34: 西藏点地梅 Androsace mariae ; 35: 裂叶堇菜 Viola dissecta ; 36: 星毛委陵菜 Potentilla acaulis ; 37: 早开堇菜 Viola prionantha ; 38: 北方还阳参 Crepis crocea.