不同土地利用类型对土壤氮素的影响
|
摘要
选取林地、园地和耕地3种土地利用类型,分析禹州市褐土土壤中氮素含量的研究结果表明:0～15 cm土层中,矿化氮含量为:林地>园地>耕地;土壤表层(0～5 cm)硝态氮含量林地最高,显著高于园地和耕地,而土壤表层铵态氮含量园地和林地显著高于耕地;不同土层中的,林地、园地和耕地的硝态氮和铵态氮含量差异显著(P<0.05)。在林地和园地0～5 cm土层中,硝态氮含量显著高于10～15 cm土层,而耕地中硝态氮含量无显著差异,其中林地的硝态氮含量随土壤深度的增加而降低。3种土地利用类型铵态氮含量主要集中分布在土壤0～10 cm土层中。
Land use type is an important factor affecting the distribution of soil nitrogen content. In this experiment, the forest land, garden land, and cultivated land were used to analyze the nitrogen content in the cinnamon soil of Yuzhou City. The results showed that the mineralized nitrogen contents in 0～15 cm soil profile were forest land > garden land > cultivated land. The nitrate content in the soil surface layer(0～5 cm)was the highest in the forest land, which was significantly higher than that the other two land use types, while the surface layer ammonium nitrogen contents in the soil under forest land and garden land were significantly higher than that in the cultivated land. The contents of nitrate nitrogen and ammonium nitrogen in different soil layers were significantly different. The nitrate nitrogen content in 0～5 cm soil layer of forest land and garden land was significantly higher than that of 10～15 cm soil layer, but there was no significant difference in nitrate nitrogen content of cultivated land. The nitrate nitrogen content of forest land decreased with soil depth. The ammonium nitrogen content of three land use types was mainly concentrated in the soil 0～10 cm layer.
Land use type is an important factor affecting the distribution of soil nitrogen content. In this experiment, the forest land, garden land, and cultivated land were used to analyze the nitrogen content in the cinnamon soil of Yuzhou City. The results showed that the mineralized nitrogen contents in 0～15 cm soil profile were forest land > garden land > cultivated land. The nitrate content in the soil surface layer(0～5 cm)was the highest in the forest land, which was significantly higher than that the other two land use types, while the surface layer ammonium nitrogen contents in the soil under forest land and garden land were significantly higher than that in the cultivated land. The contents of nitrate nitrogen and ammonium nitrogen in different soil layers were significantly different. The nitrate nitrogen content in 0～5 cm soil layer of forest land and garden land was significantly higher than that of 10～15 cm soil layer, but there was no significant difference in nitrate nitrogen content of cultivated land. The nitrate nitrogen content of forest land decreased with soil depth. The ammonium nitrogen content of three land use types was mainly concentrated in the soil 0～10 cm layer.
引文
[1]李荣,何兴东,张宁,等.沙丘固定过程中土壤铵态氮和硝态氮的时空变化[J].土壤学报, 2010, 47(2):295-302.
[2] Rice E L, Pancholy S K. Inhibition of nitrification by climax ecosystems[J]. American Journal of Botany, 1972, 59(10):1 033-1 040.
[3]张庆费,由文辉.浙江天童植物群落演替对土壤化学性质的影响[J].应用生态学报, 1999, 10(1):19-22.
[4]宋歌,孙波,教剑英.测定土壤硝态氮的紫外分光光度法与其他方法的比较[J].土壤学报, 2007(2):288-293.
[5]梁兰英.紫外分光光度法测定土壤中的硝态氮[J].甘肃环境研究与监测, 2001, 14(2):80-81.
[6]石薇,王景燕,魏有波,等.水热条件对华西雨屏区柳杉人工林土壤氮矿化的影响[J].土壤通报, 2014, 45(6):1 430-1 436.
[7]赵宁,张洪轩,王若梦,等.放牧对若尔盖高寒草甸土壤氮矿化及其温度敏感性的影响[J].生态学报, 2014, 34(15):4 234-4 241.
[8]巨晓棠,李生秀.土壤氮素矿化的温度水分效应[J].植物营养与肥料学报, 1998, 4(1):37-42.
[9]梁涛.西苕溪流域不同土地类型下氮元素输移过程[J].地理学报, 2002, 57(4):389-396.
[10]薛晓辉,赵常万,张嵩.黔西北不同土地利用类型下土壤全氮及硝态氮的分布与残留[J].草地学报, 2016, 24(4):819-824.
[2] Rice E L, Pancholy S K. Inhibition of nitrification by climax ecosystems[J]. American Journal of Botany, 1972, 59(10):1 033-1 040.
[3]张庆费,由文辉.浙江天童植物群落演替对土壤化学性质的影响[J].应用生态学报, 1999, 10(1):19-22.
[4]宋歌,孙波,教剑英.测定土壤硝态氮的紫外分光光度法与其他方法的比较[J].土壤学报, 2007(2):288-293.
[5]梁兰英.紫外分光光度法测定土壤中的硝态氮[J].甘肃环境研究与监测, 2001, 14(2):80-81.
[6]石薇,王景燕,魏有波,等.水热条件对华西雨屏区柳杉人工林土壤氮矿化的影响[J].土壤通报, 2014, 45(6):1 430-1 436.
[7]赵宁,张洪轩,王若梦,等.放牧对若尔盖高寒草甸土壤氮矿化及其温度敏感性的影响[J].生态学报, 2014, 34(15):4 234-4 241.
[8]巨晓棠,李生秀.土壤氮素矿化的温度水分效应[J].植物营养与肥料学报, 1998, 4(1):37-42.
[9]梁涛.西苕溪流域不同土地类型下氮元素输移过程[J].地理学报, 2002, 57(4):389-396.
[10]薛晓辉,赵常万,张嵩.黔西北不同土地利用类型下土壤全氮及硝态氮的分布与残留[J].草地学报, 2016, 24(4):819-824.