How do native and .improved grasses affect above‐ground production and soil organic C ?

摘要：

Crested wheatgrass A gropyron cristatum (L.) Gaertn. and Russian wildrye Psathyrostachys j uncea (Fisch.) Nevski are commonly used for reseeding in the more xeric Mixed Prairie because they are perceived to be more productive than native species.However, crested wheatgrass has been implicated in soil deterioration (Dormaar et al., 1995 ) while native grasses are being examined with increasing interest in Canada for their potential use in reclamation and forage production (Kerr et al., 1993).The objectives of our study were to compare the above‐ground net primary production (ANPP) and soil organic C among communities of selected native and introduced grasses and wheat, and to assess the benefits of simple mixtures.

关键词： Agropyron cristatum Psathy rostachys juncea Stipa v iridula Pascopyrum smithii Bouteloua gracilis

作者: W.D.Willms X.Hao Han Guodong Zhao Mengli H.Douwes

作者单位: Agriculture and Agri-Food Canada,Lethbridge,A lberta,Canada TIJ 4BI Department of Grassland Science,Inner Mongolia Agricultural University,Hohhot,Inner Mongolia,P.R.Chi

会议类型: 国际会议

会议名称: 2008世界草地与草原大会

会议地点: 呼和浩特

会议语种:英文

在线出版日期: 2008-06-29（万方平台首次上网日期，不代表论文的发表时间）