城乡梯度上一年生杂草叶片氮磷含量的变化及其与土壤氮磷的关系

doi:10.3969/j.issn.1000-5641.2015.02.016

华东师范大学学报(自然科学版) ›› 2015, Vol. 2015 ›› Issue (2): 133-.doi: 10.3969/j.issn.1000-5641.2015.02.016

• 生态学生命科学 • 上一篇

城乡梯度上一年生杂草叶片氮磷含量的变化及其与土壤氮磷的关系

段秀文¹,蔡北溟¹,陈晓双¹,崔易翀¹, 达良俊^1，3

1. 华东师范大学生态与环境科学学院, 上海200241；
2. 华东师范大学上海市城市化生态过程与生态修复重点实验室, 上海200241；
3. 华东师范大学浙江天童森林生态系统国家野外科学观察研究站, 上海200241

收稿日期:2014-04-11 出版日期:2015-03-25 发布日期:2015-05-28
通讯作者: 达良俊，男，教授，博士生导师，研究方向为城市生态学和植被生态学. E-mail:ljda@des.ecnu.edu.cn
作者简介:段秀文，女，硕士研究生，研究方向为城市生态学. E-mail: dxw1004@163.com.
基金资助:
国家自然科学基金（40971041）

Variation of leaf nitrogen and phosphorus of annual weeds along urban rural gradient and their relationships with soil fertility

DUAN Xiu-wen¹,CAI Bei-ming¹,CHEN Xiao-shuang¹,CUI Yi-chong¹,DA Liang-jun^1，3

1. School of Ecological and Environmental Sciences, East China Normal University, Shanghai200241, China;
2. Shanghai Key Laboratory for Ecology of Urbanization Process and
Ecorestoration, East China Normal University, Shanghai200241, China；
3. Tiantong National Station of Forest Ecosystem, Chinese National Ecosystem Observation and Research Station, East China Normal University, Shanghai200241, China

Received:2014-04-11 Online:2015-03-25 Published:2015-05-28

摘要/Abstract

摘要： 在上海城乡梯度上，选取隶属于禾本科和菊科的3种广布型一年生杂草：狗尾草（Setaria viridis）、稗（Echinochloa crusgalli）和醴肠（Eclipta prostrata），通过测定3种杂草单位质量叶片氮含量、单位质量叶片磷含量及其生境中土壤总氮、总磷的含量，分析城乡梯度上植物叶片氮磷含量的变化及其与土壤氮磷之间的关系.结果表明：①总体上，从中心城区至远郊区，3种一年生杂草的叶片氮含量显著上升，而叶片磷含量无显著变化；②其中，狗尾草与醴肠的叶片氮含量呈显著上升趋势，狗尾草叶片磷含量呈显著上升趋势；③土壤总氮、总磷与植物单位质量叶片氮、叶片磷总量呈显著性负相关（p<0.05）.综上可知，杂草的叶片氮磷含量对城市化有显著响应，物种间存在差异；土壤氮磷含量的变化是其成因之一.

关键词: 上海市, 城市化, 一年生杂草, 土壤氮磷

Abstract: Leaf mass based nitrogen (N_mass) and phosphorus (P_mass) concentrate were measured for three annual weeds,Setaria viridis, Echinochloa crusgalli and Eclipta prostrate which are widely distributed from urban areas to rural areas in Shanghai. The differences of N_massand P_massamong three urban gradients were compared for each species and were related with the total nitrogen (Soil_N) and phosphourous (Soil_P) concentrate in soil. The results indicated that: ① N _massof all annual weeds was significantly increased from urban areas to rural areas, but P_mass did not show significant variation. ② For each species, S. viridis and E.prostrate showed a significant increasing tendency of N_mass from urban areas to rural areas, while only S. viridis showed a significant increasing tendency of P_mass. ③ Both of Soil_Nand Soil_Pshowed negative relationships with N_mass and P_mass. All those results suggested that annual weed could response to urbanization by changing nitrogen and phosphorous concentrate in leaves which might be partly caused by the variation of soil fertility, but species have different strategies in changing N_massand P_mass to adapt the urban habitats.

Key words: Shanghai, urbanization, annual weeds, soil total nitrogen and phosphorus

中图分类号:

Q948.11

段秀文, 蔡北溟, 陈晓双, 崔易翀, 达良俊. 城乡梯度上一年生杂草叶片氮磷含量的变化及其与土壤氮磷的关系[J]. 华东师范大学学报(自然科学版), 2015, 2015(2): 133-.

DUAN Xiu-Wen, CAI Bei-Ming, CHEN Xiao-Shuang, CUI Yi-Chong, DA Liang-Jun-. Variation of leaf nitrogen and phosphorus of annual weeds along urban rural gradient and their relationships with soil fertility[J]. Journal of East China Normal University(Natural Sc, 2015, 2015(2): 133-.

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城乡梯度上一年生杂草叶片氮磷含量的变化及其与土壤氮磷的关系

Variation of leaf nitrogen and phosphorus of annual weeds along urban rural gradient and their relationships with soil fertility

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