农业环境科学学报2017，Vol.36Issue(3)：557-565,9.DOI:10.11654/jaes.2016-1287
高温与降雨对不同茶龄土壤碳氮养分及胞外酶活性的影响
Effects of extreme warming and rainfall on carbon and nitrogen nutrients status and enzyme activities in tea garden soils with different planting ages
摘要
Abstract
In this paper, we investigate the effects of high temperature and rainfall on soil carbon and nitrogen variations and enzyme activi-ties, by conducting experiments on different tea soils at cultivation ages of 0, 10, 30, and 50 years. The result indicated that under 35 ℃treatment condition, the soil total organic carbon, ammonium nitrogen, nitrate nitrogen, microbial carbon contents, and the activity of extra-cellular enzymes related to soil carbon decreased while the extracellular enzymes related to soil nitrogen increased. 40 ℃treatment can sig-nificantly reduce the content of carbon and nitrogen in soil and the activity of extracellular enzymes related to carbon and nitrogen of soil. Af-terwards, the following simulated rainfall presented a positive effect on the recovery of soil microbial biomass carbon and extracellular en-zyme activity, but there was no significant effect on other nutrient indexes. Above all, the tea soil under cultivation age 30 years exhibited higher nutrient content of carbon, nitrogen and enzyme activity, meaning that the soil ecosystem stability and the resistance ability to extreme high temperature and rainfall variation are better than other soil cultivation ages.关键词
茶园土壤/茶龄/土壤养分/胞外酶活性/极端气候Key words
tea orchards/cultivation age/soil nutrients/extracellular enzyme/extreme climate分类
农业科技引用本文复制引用
李茴,赵杏,杨京平,钟一铭,王小鹏..高温与降雨对不同茶龄土壤碳氮养分及胞外酶活性的影响[J].农业环境科学学报,2017,36(3):557-565,9.基金项目
高等学校博士学科点专项科研基金项目(20130101110127) （20130101110127）
国家水体污染控制与治理科技重大专项(2014ZX07101-012) he Specialized Research Fund for the Doctoral Program of Higher Education of China (20130101110127) （2014ZX07101-012）
National Major Science and Technology Program for Water Pollution Control and Treatment(2014ZX07101-012) （2014ZX07101-012）
