地理研究 ›› 2005, Vol. 24 ›› Issue (6): 825-833.doi: 10.11821/yj2005060001

• 论文 •    下一篇

超富集植物蜈蚣草在中国的地理分布及其生境特征

陈同斌1, 张斌才1,2, 黄泽春1, 刘颖茹1, 郑袁明1, 雷梅1, 廖晓勇1, 朴顺姬2   

  1. 1. 中国科学院地理科学与资源研究所环境修复中心, 北京 100101;
    2. 内蒙古大学生态与环境科学系, 呼和浩特 010021
  • 收稿日期:2005-06-01 修回日期:2005-08-26 出版日期:2005-12-15 发布日期:2005-12-15
  • 作者简介:陈同斌(1963-),男,广西桂林人,博士,研究员,博士生导师,主要研究方向为污染土壤的植物修 复,区域土壤环境质量评价以及固体废弃物资源化。Email:chentb@igsnrrac.cn
  • 基金资助:

    国家杰出青年科学基金(40325003);国家高技术发展研究计划(2003AA645010)资助

Geographical distribution and characteristics of habitat of As-hyperaccumulator Pteris vittata L.in China

CHEN Tong-bin1, ZHANG Bin-cai1,2, HUANG Ze-chun1, LIU Ying-ru1, ZHENG Yuan-ming1, LEI Mei1, LIAO Xiao-yong1, PIAO Shun-ji2   

  1. 1. Center for Environmental Remediation, Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing 100101, China;
    2. Department of Ecology and Environment Science, Inner Mongolia University, Huhhot 010021, China
  • Received:2005-06-01 Revised:2005-08-26 Online:2005-12-15 Published:2005-12-15

摘要:

根据本研究小组多年来对我国南部近20个省、市(区)的调查,结合前人的文献资料,编制了蜈蚣草在中国的分布图,总结了蜈蚣草对日照、水分、热量和土壤等因素的生态适宜性。研究发现,蜈蚣草在中国主要分布在秦岭以南的热带、亚热带地区。蜈蚣草生长需要的水热条件为:年均温高于10℃、1月均温大于0℃、7月均温大于20℃、≥10℃积温超过3800℃、无霜期不短于200天和年降水量大于500 mm。冬季的低温(1月均温和无霜期)可能是蜈蚣草进一步向高纬度分布的主要限制性因素。蜈蚣草对土壤pH的适应范围较宽。本研究结果为蜈蚣草的引种及其在植物修复中的潜在应用价值的确定提供了科学依据。

关键词: 超富集植物, 蜈蚣草, 地理分布, 土壤, pH, 气候条件

Abstract:

According to 6-year investigations in the south of China and available recordation,the geographical distribution maps of P.vittata in China were compiled,and the ecological adaptabilities of P.vittata,including sunlight,thermal condition,precipitation and soil pH,were summarized.It was found that P.vittata were distributed within the tropical and the subtropical regions south of Qinling Mountains.Mean annual temperature above 10℃,mean monthly temperature of January above 0℃,mean monthly temperature of July above 20℃,the accumulated temperature ≥10℃more than 3800℃,annual frost-free periods more than 200 days and annual precipitation more than 500 mm are the ideal water and heat conditions needed for P.vittata growth.Among them,mean monthly temperature of January and annual frost-free periods seemed to be the main limiting factors that restricted distribution of P.vittata further up to the high latitude area.A wide range of soil pH was found within the distribution areas of P.vittata,indicated that it had little restriction to the distribution of P.vittata.It can be concluded that P.vittata could not only be used to phytoremediate arsenic contaminated soils within its natural distribution area,but also in the North China Plain north of its natural distribution area,with proper agricultural measure to ensure the underground part of P.vittata against low temperature and frost in winter.According to the distribution area and the habitat characters of P.vittata,it can also be concluded that P.vittata could be used for phytoremediation with little ecological risk.

Key words: hyperaccumulator, Pteris vittata L., geographic distribution, soil, pH, climate