项目名称: 酸沉降对中国东部亚热带典型树种叶片养分利用的影响
项目编号: No.40801196
项目类型: 青年科学基金项目
立项/批准年度: 2009
项目学科: 金属学与金属工艺
项目作者: 姚芳芳
作者单位: 华东师范大学
项目金额: 20万元
中文摘要: 借助污染生态学、植物营养学和生理生态学的方法,本项目围绕酸沉降对植物叶片养分利用影响方面的有关问题进行探讨。通过急性酸雨模拟试验,进行了亚热带典型树种的酸雨敏感性分析;在此基础上,选取典型树种进行长期模拟试验,分析不同施入方式(叶片喷施和土壤淋施)和不同S/N比的模拟酸雨对植物的影响机制,研究导致酸雨区植物养分利用变化的关键因素。此外,对天童地区大气降水进行为期一年的连续监测,这些最新的数据将有利于揭示我国东部酸雨重污染区的酸性成因。
中文关键词: 酸沉降;常绿阔叶林;降水;敏感性;叶片养分
英文摘要: With pollution ecology, plant nutrition and physiological ecology, the project discusses some related questions about the effects of acid deposition on plant leaf nutrient utilization in subtropical China. The short-term experiment investigated susceptibility to acid deposition on the native tree species. On the basis, we selected the typical species for long-term test analysis, applied with different spraying way (foliar applications and soil leaching facilities) and different S / N ratio, to research the key factor led to the changes of nutrient utilization in region with heavy acid deposition. In addition, the rain samples in Tiantong Forest were collected for one year, these data will be beneficial to reveal the acidity causes of acid rain heavily polluted area in eastern China.
英文关键词: Acid deposition;evergreen broad-leaved forest;precipitation;sensitivity;leaf nutrient