LI Qi^1,2, XUE Xingquan^1,2, ZHAO Wenwu³, WANG Lianxi^1,2, MIAO Miao^1,2, LIU Yuanxin³

(1. JiangsuKey laboratory of Agricultural Meteorology,NUIST,Nanjing 210044,China;
2.School of Applied Meteorology of NUIST,Nanjing 210044,China;
3.College of Resources Science and Technology,Beijing Normal University,Beijing 100875,China;)

 

Abstract: Based on field survey combined with laboratory analysis, spatial variability of soil nutrient in Caraganakorshinskii soil under different precipitation conditions in the loess plateau, Shanxi Province, China was researched. Results show that soil nutrient content in the research district is low, and organic matter and full nitrogen have significant spatial variability under the precipitation gradient. Contents of organic matter and full nitrogen in soil profile reducewith increasing deep of the soil; and full phosphorus content in soil profile gradually reduces from surface to deep layer, and gradually increases from deep layer to the bottom. The distribution law for full potassium content in soil profile is in contrast to organic matter and full nitrogen. The organic matter, full nitrogen, full phosphorus and full potassium contents increase under the precipitation gradient. The organic matter has highly significant positive correlation withfull nitrogen and full potassium, and has significant positive correlation with full potassium.

 

Keywords: Caraganakorshinskii; soil nutrient; precipitation gradient; spatial variability

 

EARTH AND ENVIRONMENT Vol.44, No.4 Tot No.312, 2016, Page 398-405