摘要
该文以大量翔实的调查资料,从生态学、地理学、灾害学、农经学相结合的角度,分析论证了西北黄土高原水土流失区制约粮食生产发展的因素,干旱发生规律及其主要类型,进而对该区干旱缺水的因素进行了深层次的研究;对粮食及农业生产的防旱抗旱减灾活动提供了理论依据。
With a plentiful research material,the factors that affect the grain production ofthe water and soil loss region of the northwest loess plteau has been analysed.A detail re-search the regular and the mainly types of the drotight in the area has been made.
出处
《宁夏大学学报(自然科学版)》
CAS
1995年第1期82-90,共9页
Journal of Ningxia University(Natural Science Edition)
基金
国家八五科技攻关项目
关键词
生态系统
干旱
粮食
黄土高原
土壤侵蚀
ecological system. arid harmfulness. the factors of harmfulness,grain produc-tion,soil and water loss region,loess plteau.