欢迎访问《应用生态学报》官方网站,今天是 分享到:

应用生态学报 ›› 2004, Vol. ›› Issue (11): 2113-2116.

• 研究论文 • 上一篇    下一篇

冀西北高原植被生产力与退耕对策

刘玉华, 张立峰   

  1. 河北农业大学, 保定 071001
  • 收稿日期:2004-03-01 修回日期:2004-07-19
  • 通讯作者: 刘玉华,男,1964年生,教授,博士,主要从事农业生态学与农作制度研究,发表论文30余篇.现于中国科学院地理科学与环境资源研究所博士后流动站工作.Tel:0312-7528113;E-mail:zbsq@mail.hebau.edu.cn
  • 基金资助:
    国家重点基础研究发展规划项目(G2000018606);国家防沙治沙资助项目(FS200003)

Actual productivities of different vegetations in northwest plateau of Hebei Province and strategies of converting farmland to forest and pasture land

LIU Yuhua, ZHANG Lifeng   

  1. Hebei Agriculture University, Baoding 071001, China
  • Received:2004-03-01 Revised:2004-07-19

摘要: 依据冀西北高原的气候与土壤条件,进行了区域内不同类型农田农林草现实生产力状况的比较研究.结果表明,就不同植被而言,不论是草甸栗钙土还是砂质栗钙土,农田和草地与林地相比具有明显的生物产量优势,而农田和人工草地之间的生物产量差异相对较小.就不同农田类型而言,草甸栗钙土植被生产力明显高于砂质栗钙土.在明确不同植被现实生产力间差异的基础上,提出了要首先实施砂质栗钙土农田的退耕,退耕地只能还草,不能还林,退耕后必须进行植被生产结构的战略性调整等兼顾保护生态环境与发展农村经济的退耕对策.

关键词: 冀西北高原, 植被, 现实生产力, 退耕, 对策

Abstract: Basing on the climate and soil conditions in northwest plateau of Hebei Province,this study compared the actual productivities of different vegetation types.The results showed that the productivity of crop and grass was much higher than that of forest either on meadow chestnut soil or on sand chestnut soil,and the difference of productivities between crop and grass was small.As for different soil types,the productivity of grassland chestnut soil was higher than that of sand chestnut soil.According to the differences of productivities between crop,forest and grass,most farmland should be converted to grassland but not forest land.After farmland converted,the production structure should be adjusted in considering both the protection of ecological environment and the development of local economy.

Key words: Northwest plateau of Hebei Province, Vegetation, Actual productivity, Converting farmland to forest and pasture land, Strategy

中图分类号: