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| 苏州太湖湖滨带不同水分梯度土壤氮的时空变异特征 | |
| 引用本文： | 冯育青,陈月琴,阮宏华,张海娣,傅丽娜.苏州太湖湖滨带不同水分梯度土壤氮的时空变异特征[J].华东森林经理,2010,24(1):7-14. |
| 作者姓名： | 冯育青 陈月琴 阮宏华 张海娣 傅丽娜 |
| 作者单位： | 1. 南京林业大学森林资源与环境学院,江苏省林业生态工程重点实验室,南京,210037;苏州湿地保护与管理站,苏州,215000 2. 江阴市林业指导站,江阴,214400 3. 南京林业大学森林资源与环境学院,江苏省林业生态工程重点实验室,南京,210037 |
| 摘 要： | 选择苏州渔阳山保存较为良好典型的太湖湖滨带作为试验地,并根据距离水体的远近,将湖滨带从近水体到高岗地分别设置三个实验区,探讨了湖滨带土壤全氮、有效氮、微生物生物量氮的时间和空间变异特征。结果表明:太湖湖滨带土壤有效氮含量近水区中水区远水区,土壤湿度和水淹作用对土壤氮素含量具有影响作用;土壤有效氮呈明显季节波动秋季春季夏季,在植物生长旺盛季节维持较低水平;土壤有效氮随土层深度的增加逐渐减少;土壤有效氮与土壤全氮、土壤微生物生物量氮呈显著正相关关系。沿水分梯度土壤有效氮受土壤全氮、土壤微生物生物量氮、土壤湿度、植被类型以及人类活动影响。 |
| 关 键 词： | 水分梯度 湖滨带 土壤氮 太湖 |
Variations of Temporal and Spatial Variability of Soil Nitrogen along moisture gradient of Riparian Zone of Taihu lake in Suzhou |
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| Feng yuqing,Chen yueqin,Ruan honghua,Zhang Haidi,Fu Lina.Variations of Temporal and Spatial Variability of Soil Nitrogen along moisture gradient of Riparian Zone of Taihu lake in Suzhou[J].East China Forest Management,2010,24(1):7-14. | |
| Authors: | Feng yuqing Chen yueqin Ruan honghua Zhang Haidi Fu Lina |
| Institution: | Feng yuqing Chen yueqin Ruan honghua Zhang Haidi Fu Lina (1 Key Laboratory of Forestry Ecological Engineering of Jiangsu Province, College of Forest Resources and the Environmental Science, Nanjing Forestry University, Nanjing 21003 7, China, 2 Jiangyin Forestry Station, Jiangyin, 214400, China; 3 The office of wetland conservation and mangement, Suzhou 2150000) |
| Abstract: | Along a soil moisture gradient in a riparian area and using random block experimental design, the soil total nitrogen, soil available nitrogen, soil microbial biomass nitrogen, soil moisture in Taihu riparian zone were investigated. The results showed that the concentration of soil available nitrogen decreased with distance from the water body. Moisture gradient and flooding affected the concentration of soil nitrogen. Soil available nitrogen had a significant seasonal fluctuation, being lower in plant vigorous growing season. The soil available nitrogen decreased with soil depth. Soil available nitrogen had positive correlations with soil total nitrogen and soil available nitrogen, and was significantly affected by soil total nitrogen, soil microbial biomass nitrogen, moisture, vegetation and human activity along the moisture gradient. |
| Keywords: | moisture gradient riparian zone soil nitrogen Taihu lake |
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