摘要
为研究侵蚀和海拔对天山温性荒漠草原土壤理化性质的影响,本研究基于对天山温性荒漠草原45个样地0~5 cm、5~10 cm、10~20 cm、20~30 cm、30~50 cm、50~70 cm和70~100 cm土壤理化性质(容重、土石比、全氮以及pH值)的测定,综合分析风蚀、水蚀和海拔对土壤理化性质的影响。结果显示,随土层增加,容重、土石比和pH值均无显著变化,而全氮呈逐渐降低的趋势。容重、土石比和全氮在各土层均呈中等变异,但pH值呈弱变异性。风蚀显著增加了0~30 cm各土层的容重,但降低了0~50 cm各土层全氮。水蚀降低了0~30 cm各土层全氮。土石比、全氮和pH值与海拔之间并无显著相关性。容重在0~10 cm各土层均随海拔升高而增加。
In order to research effects of erosion and elevation on soil physical and chemical properties in Tianshan Mountains temperate desert steppe,this study aims to examine variations of soil bulk density(SBD),ratio of rock to soil(RRS),total nitrogen(TN)and pH under wind and water erosions conditions and explore their trends with elevation,on basis of these variables collected at 0-5 cm,5-10 cm,10-20 cm,20-30 cm,30-50 cm,50-70 cm and 70-100 cm among 45 sites.The results demonstrated that with increasing soil layers,no significant variation was found in variations such as SBD,RRS and pH,while TN decreased significantly with increasing soil layers.All these variables exhibited a moderate degree of variation except for a weak degree of variation on pH.Wind erosion significantly increased SBD at 0-30 cm soil layers but decreased TN at 0-50 cm soil layers.However,water erosion decreased TN at 0-30 cm soil layers.No significant relationship was detected among RRS,TN,pH and elevation.However,SBD at 0-10 cm soil layers gradually increased with increasing elevation.
作者
张慧
左李娜
刘耘华
盛建东
程军回
ZHANG Hui;ZUO Li-na;LIU Yun-hua;SHENG Jian-dong;CHENG Jun-hui(College of Resources and Environment,Xinjiang Agricultural University,Urumqi 830052,China;Xinjiang Key Laboratory of Soil and Plant Ecological Processes,Urumqi 830052,China)
出处
《新疆农业大学学报》
CAS
2022年第2期165-172,共8页
Journal of Xinjiang Agricultural University
基金
国家自然科学基金项目(U1603235,31660127)。
关键词
侵蚀类型
海拔
土壤理化性质
温性荒漠草原
天山
erosion types
elevation
soil physical and chemical properties
temperate desert steppe
Tianshan Mountains
