摘要
以博尔塔拉河、精河下游河岸带不同植被覆盖条件下的土壤为研究对象,定量测定土壤中有机质与全氮、全磷、全钾的含量并进行统计分析,结果表明:两河下游河岸带土壤有机质、全氮含量呈现出较强的表聚性;博尔塔拉河下游河岸带土壤有机质与全氮含量之间存在显著相关性,与全磷、全钾相关性不强,精河下游河岸带土壤有机质与全氮、全磷、全钾相关性较强;空间变异特征显示:两河下游河岸带土壤各养分指标均表现为中等空间变异特征;对两河下游河岸带土壤养分指标测定结果进行对比,发现博尔塔拉河下游河岸带土壤养分含量高于精河下游河岸带土壤,但养分含量总体偏低。同时,因土壤类型及养分条件的不同,地表植物群落组成差异明显。
Soil samples from the riparian zone of Bohe River and Jinghe River in the Ebinur Lake Basin were taken and analyzed. The organic matter, total N, total P and total K contents were measured under different conditions of vegetation coverage. By the method of statistical analysis, the results showed that the level of soil organic matter and the nitrogen content in the soil displayed the characteristics of top-down vertical dif- ferentiation, and the accumulation of salt in the surface soil was significant; The results of correlation analy- sis show that there existed a significant correlation between the amount of soil organic matters and the total N in different soil layers, but soil organic matter, the total P, and total K had little correlation in every soil layer in riparian zone of Bohe river; there existed a significant correlation between the amount of soil organic matter and the total N, total P, total K in the riparian zone of Jinghe river; the soil nutrient spatial variabili- ty characteristics in two rivers downstream riparian showed moderate spatial variation. The soil nutrient sta- tus showed soil nutrient content in River riparian of Bohe was higher than the Jinghe, but the overall level was low. Meanwhile, composition of plant communities in surface was significantly various due to the different soil type and nutrient conditions.
出处
《水土保持研究》
CSCD
北大核心
2013年第2期43-47,共5页
Research of Soil and Water Conservation
基金
中国沙漠气象科学研究基金"艾比湖干涸湖底疏松裸土区表层土壤特征与沙尘天气关系研究"(Sqj2011009)
国家自然科学基金"艾比湖湿地生态环境演变及生态恢复研究"(41171036)
新疆师范大学优秀青年教师科研启动基金项目"艾比湖干涸湖底表层土壤盐分现状及成因分析"(XJNU1013)
关键词
土壤
养分特征
博尔塔拉河
精河
soil
nutrients characteristics
Behe River
Jinghe River
