%0 Journal Article
%T BAISN FACYORS OF THE IMPACT OF FOREST ON RIVER RUNOFF<br>森林影响河川径流的流域因素
%A Zhang Tianzeng
%A <br>张天曾
%J 自然资源学报
%D 1989
%I 
%X About the impact of forest on the river runoff, many experiments in small areas and small river basins have been made at home and abroad. The experimental results show that deforesta-tion makes runoff increase and that, on the contrary, raising forest vegetation ratemakes runoff decrease. However, in large river basins it is not surely the case mentoned above. Therefore, it is not suitable to apply the consequence of the experimnt in small areas to large river basins, In short, the impact of tree planting and grass plating or deforestation on the total amount of water in large basins is rather complicated. In order to know what makes water quantity in a large basin decrease, increase or remain almost unchanged, detailed investigation and observation should be made on the related natural conditions (basin factors) of the basins. Simple expreiments carried out in small areas cannot provide a correct answer.
%K impact of forest
%K runoff
%K small basin
%K large basin
%K basin factors<br>森林影响
%K 径流
%K 小流域
%K 大流域
%K 流域因素
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=A7CA601309F5FED03C078BCE383971DC&jid=4DCB9A3AF3395AF0101DE5302EF3C300&aid=998B8F2B16114374CBEF2EFBA2B16AF8&yid=1833A6AA51F779C1&vid=E158A972A605785F&iid=CA4FD0336C81A37A&sid=42425781F0B1C26E&eid=94E7F66E6C42FA23&journal_id=1000-3037&journal_name=自然资源学报&referenced_num=8&reference_num=20