土壤2018，Vol.50Issue(2)：398-403,6.DOI:10.13758/j.cnki.tr.2018.02.025
基于137Cs的新疆准东地区不同土地利用类型土壤风蚀特征研究
Using 137Cs Technique to Study Soil Wind Erosion of Different Land Use Types in Eastern Junggar Basin, Xinjiang
摘要
Abstract
In arid and semi-arid area of Eastern Junggar Basin, wind erosion is the key factor of desertification, and this paper studied 137Cs distribution characteristics and wind erosion of different land use types were studied in this study by field investigation and soil sampling analysis. The results showed: the distribution characteristics of 137Cs were different among the profiles of different land use types, 137Cs mainly distributed in 0–20 cm depth or shallower, 137Cs activity values varied from 0.40 to 65.50 Bq/kg; 137Cs content varied from 0 to 1 698.29 Bq/m2with the background value of 1 698.29 Bq/m2, while the 137Cs inventory of different land types was in the order of lower-flat meadows (background) >nebkhas>desert grassland> gravel gobi>saline-alkali land > cultivated land > fixed sandy land > semi-fixed sandy land >wind erosion bare; The estimated mean wind erosion rates of cultivated land and non-cultivated land were 744.50 t/(km2·a) for cultivated land and 945.06 ~ 4 404.01 t/(km2·a) for non-cultivated land with a mean value of 2 589.96 t/(km2·a).关键词
137Cs/风力侵蚀/土地利用/准东Key words
137Cs/Wind erosion/Land use types/East Junggar Basin分类
农业科技引用本文复制引用
丁肇龙,汪君,胥鹏海,曹月娥,刘巍,杨建军..基于137Cs的新疆准东地区不同土地利用类型土壤风蚀特征研究[J].土壤,2018,50(2):398-403,6.基金项目
国家自然科学基金项目(4166010047、414610056)资助. （4166010047、414610056）
