Response of Amorpha fruiticosa planting to soil nutrients in the Tibetan Plateau

doi:10.11686/cyxb20140320

Abstract

Abstract: The two years old Amorpha fruticosa planted in the southwest of the Tibetan Plateau, Lhasa was selected to study the various forms of nitrogen, total phosphorus, contents of organic carbon and pH changes in both IC (in the crown) and OC (out of crown). 1) Total nitrogen, ammonium and nitrate in IC were 23.44%, 13.95% and 37.6% higher respectively than those in OC. Soil total phosphorus in IC was 19.57% higher, soil organic carbon in IC was 44.21% higher and soil pH was lower by 1.69 units than the average. 2) There were significant (P<0.05) differences in the contents of soil total nitrogen, ammonium, nitrate, total phosphorus, organic carbon and soil pH between IC and OC. 3) In a vertical direction, the contents of total nitrogen, ammonium, nitrate and total phosphorus reached a maximum value at a depth of 10-20 cm in soils. The contents of organic carbon and pH reduced with increasing depth. 4) A linear relation was shown between the organic carbon and total nitrogen, ammonium nitrogen, total phosphorus in IC.

CLC Number:

S153.6

ZHAO Ping,DAI Wan-An,DU Ming-Xin,YANG Jie,ZHOU Zhi-Yu,LI Xiao-Zhong,LI Jin-Hui,ZHOU Yuan-Yuan,JIN Qian. Response of Amorpha fruiticosa planting to soil nutrients in the Tibetan Plateau[J]. Acta Prataculturae Sinica, 2014, 23(3): 175-181.

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