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《地球科学与环境学报》[ISSN:1672-6561/CN:61-1423/P]

卷:

第34卷

期数:

2012年第03期

页码:

70-74

栏目:

水资源与环境

出版日期:

2012-09-20

文章信息/Info

Title:

Characteristic of Total Phosphorus Distribution in Typical Vegetation Zones Along Hailuogou of Gongga Mountain

作者:

吴艳宏¹; 2; 周俊¹; 2; 邴海健¹; 2; 余东¹; 2; 孙守琴¹; 2; 罗辑¹; 2

1.中国科学院 成都山地灾害与环境研究所,四川 成都 610041; 2.中国科学院 山地表生过程与生态调控重点实验室,四川 成都 610041

Author(s):

WU Yan-hong¹; 2;  ZHOU Jun¹; 2;  BING Hai-jian¹; 2;  YU Dong¹; 2;  SUN Shou-qin¹; 2;  LUO Ji¹; 2

1. Chengdu Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 610041, Sichuan, China; 2. Key Laboratory of Mountain Surface Processes and Ecological Regulation, Chinese Academy of Sciences, Chengdu 610041, Sichuan, China

关键词:

磷;  土壤;  根际;  植被带;  垂直地带性;  生物地球化学;  海螺沟;  贡嘎山

Keywords:

phosphorus;  soil;  rhizosphere;  vegetation zone;  vertical zonality;  biogeochemistry;  Hailuogou;  Gongga Mountain

分类号:

P593; P595

DOI:

-

文献标志码:

-

摘要:

由于独特的生物地球化学循环方式,磷已成为影响山地生态系统发育和安全的重要元素。为了了解贡嘎山磷的生物地球化学循环,对贡嘎山海螺沟坡地典型植被带土壤、植物根际土壤、植物不同部位总磷在生长季(9月)和非生长季或生长季初期(5月)的分布特征进行调查。结果表明:土壤总磷的分布在垂直梯度上的差异以及同一土壤剖面不同土壤层总磷的差异均较明显,同时还呈现明显的季节性差异,这些差异的形成与土壤发育程度、温度变化及植物生长有关; 不同根际土壤在非生长季或生长季初期总磷的差异非常大,而在生长季较为接近,进一步说明植物对山地磷的生物地球化学循环存在较大影响; 杜鹃、冬瓜杨、柳的叶较幼枝更富集磷,而峨眉冷杉、麦吊杉、竹的幼枝较叶所含磷略高。

Abstract:

Phosphorus is an essential nutrient for mountain ecosystem development and security because of the special biogeochemical cycle. In order to understand the biogeochemical cycle of phosphorus in Gongga Mountain, the distributions of total phosphorus in soil from typical vegetation zone, rhizospheric soil and different parts of plants at growing season(September)and non-growing season or the beginning of growing season(May)were investigated. The results showed that the difference of distribution of total phosphorus in vertical gradient and that in different soil horizons from the same soil profile were significant, and the seasonal difference was remarkable; the above differences were related with the degree of soil development, temperature change and plant growing; the difference of total phosphorus in different rhizospheric soils at non-growing season or the beginning of growing season was large, but the difference at growing season was close, so that the plant had significant impact on the biogeochemical cycle of phosphorus in mountain; phosphorus in leaf was more than that in young shoot for rhododendron, populus purdomii and willow, while phosphorus in young shoot was a little more than that in leaf for abies fabric, picea brachytyla and bamboo.

参考文献/References:

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备注/Memo

备注/Memo:

收稿日期:2012-03-27
基金项目:中国科学院知识创新工程重要方向项目(KZCX2-YW-BR-21)
作者简介:吴艳宏(1969-),男,江苏靖江人,研究员,理学博士,E-mail:yhwu@imde.ac.cn。

常用功能

更新日期/Last Update: 2012-09-20