摘要
通过野外调查、土样采集及室内分析,对托木尔峰自然保护区台兰河上游河谷不同海拔灌木表层土壤理化性质进行研究。结果表明:(1)研究区灌木样地土壤含水率的大小范围为8.37%~71.02%,饱和含水率为49.17%~186.99%,容重为0.54~1.20 g cm^(-3),非毛管孔隙度为7.43%~13.73%,毛管孔隙度为33.79%~57.68%,总孔隙度的范围则在41.24%~68.85%之间,土壤自然含水率和饱和含水率及孔隙度均随海拔高度的增加表现为递增趋势;土壤容重则随海拔上升而呈降低趋势。(2)灌木表层土壤平均有机质含量、全N含量、全P含量、C/N、土壤pH的范围分别为3.03%~17.69%、0.22%~0.51%、0.15%~0.18%、7.15~20.07、7.73~8.03,有机质含量、全N含量的最大值分别约为最小值的5.84倍和2.32倍;有机质含量、全N含量、全P含量、C/N的大小均随海拔高度增加而趋于增大;土壤pH则随海拔上升不断降低。
This paper studied the physicochemical properties of surface soil under shrubs at various altitudes in upstream of Tailan River of Tuomuer National Nature Reserve by using the methods of field survey,sampling and laboratory analysis.The results showed that：（1） The ranges of soil moisture content,saturated water content,bulk density,capillary porosity,non-capillary porosity and total porosity were 8.37%-71.02%,49.17%-186.99%,0.54-1.20 g cm-3,7.43%-13.73%,33.79%-57.68% and 41.24%-68.85%,respectively.The average soil water content,saturated water content,capillary porosity,non-capillary porosity and total porosity increased with altitude increase,while average soil bulk density showed a decreasing trend with the increase of altitude.（2）The ranges of soil organic matter content,total N content,total P content,C/N and soil pH were 3.03%-17.69%,0.22%-0.51%,0.15%-0.18%,7.15-20.07 and 7.73-8.03,respectively;The maximum contents of organic matter and total N were 5.84 times and 2.32 times the minimum value.The average values of organic matter,total N,total P and C/N were all increased,while the average of soil pH decreased with the increase of altitude.
出处
《土壤通报》
CAS
北大核心
2017年第6期1288-1295,共8页
Chinese Journal of Soil Science
基金
国家自然科学基金项目(41461107)
新疆师范大学地理学博士点支撑学科开放课题基金项目(XJNU-DL-201608)资助
关键词
土壤理化性质
灌木
海拔高度
台兰河上游
托木尔峰自然保护区
Soil physicochemical properties
Shrub
Altitude
Upstream of Tailan river
Tuomuer National Nature Reserve
