摘要
以区域水土流失为主题 ,分析并阐述了该领域的研究现状 ,指出了当前存在的主要问题 ,并对研究的今后发展方向进行了展望。
The region_scaled soil loss study is an important issue of the subject of soil and water conservation. Its aim is to disclose the regional soil loss regulation which may be different from that of slope and catchment studies, plot and forecast the regional soil erosion, and then make a fine support to decision_making for regional soil and water control. Such studies can be reached by upscaling, where the slope or small watershed studies are its foundation and GIS, GPS and remote sensing technologies are strong support. On the other hand, regional study can also be got by macro_synthesis. But, because of different reasons, such study is still immature. In this paper, taking this issue as a topic, its current situation is discussed; the main problems are described; and the coming studies are previewed here. Finally, such ideas are kept: factors affecting regional soil loss are different from that of slope and catchment studies, and the law of each factor should be studied respectively; the models system of regional soil loss should be constructed; and some key technologies about regional soil loss study, such as the integration between '3S' and erosion model, upscaling method and so on should be focused to get a fine answer.
出处
《山地学报》
CSCD
2001年第1期69-74,共6页
Mountain Research
基金
黄土高原土壤侵蚀与旱地农业国家重点实验室基金
