Effects of Sand Dune Slopes on Soil Nutrients and Plant Community for Caragana intermedia Plantation
This study was to determine how the soil nutrients and plant community were affected by slopes of sand dunes 12 years after Caragana intermedia plantation was established on the alpine sandy land of Gonghe Basin on Qinghai-Tibet Plateau.The moving sand dune in the vicinity of experiment site was chosen as a control.The soil samples were collected for four replicates from five depths (0 ～ 5,5 ～ 10,10 ～ 20,20 ～ 30 cm and 30 ～ 50 cm) on windward slopes,tops of slopes and leeward slopes.The results showed that the soil organic matter content at 0 ～ 20 cm,total nitrogen and total phosphorus content at 0 ～ 50 cm for all sand dunes slopes of C.intermedia plantation were significantly higher than that of the moving sand dune.The soil organic matter and total nitrogen contents at 0 ～ 5 cm and total phosphorus content at 0 ～ 20 cm for windward slopes were significantly higher than that at the top of slopes and leeward slopes.The establishment of C.intermedia plantation on sand dunes facilitated the colonization and development of herbaceous species.The coverage and species of herbaceous increased,especially for windward slopes.
Caragana intermedia plantationsand dunes slopessoil nutrientsplant community
NETL
NSTL
万方数据
维普
