摘要
对武功山海拔1 600~1 900 m退化草甸区域土壤磷的分异规律进行了研究。结果表明,土壤有效磷和有机磷显著提高,且均呈表聚性;土壤有机磷含量为0.01~0.06 g/kg;低海拔区域的土壤全磷含量显著低于高海拔区域,与严重退化草甸土壤磷素亏缺有关,土壤微生物量磷含量为7~26 mg/kg。随着海拔的升高,铝磷和铁磷含量下降,而氧磷、钙磷含量增加。有效磷与铝磷、铁磷、有机磷呈显著正相关,表明了土壤有机磷、铝磷、铁磷可能是土壤有效磷的潜在来源。
According to the analyzed report, it reveals the regulation about phosphorite at the degeneration of meadow area of Wugong mountain in altitude of 1 600-1 900 m. From the analyzed report,available phosphorus and soil organic phosphorus in soil were significantly increased ,which were gathered in surface; soil organic phosphorus content ranged from 0.01 to 0.06 g/kg; Soil total phosphorus content in low altitude region was significantly lower than that in high altitude area,which was related to phosphorus deficiency in degeneration of meadow soil, microbial biomass phosphorus content ranged from 7 to 26 mg/kg in soil. With altitude ascending,the contents of aluminum phosphorus and iron phosphorus decreased,while the content of oxygen phosphorus and calcium phosphate increased. Soil available phosphorus was positively correlated with calcium phosphate,iron phosphorus and soil available phosphorus, which reveals that soil available phosphorus, calcium phosphate and iron phosphorus are the potential sources of soil available phosphorus.
出处
《湖北农业科学》
2015年第22期5572-5575,共4页
Hubei Agricultural Sciences
基金
国家科技支撑计划项目(2012BAC11B06)
武功山山地草甸生态修复技术研究及示范项目
国家自然科学基金项目(31360177)
武功山山地草甸退化土壤生态特征时空变异与土壤碳汇相应机制研究项目
关键词
武功山
退化草甸
磷素
空间分异
Wugong mountain
meadow degradation
phosphorus loss
spatial differentiation
