| 摘要: |
| 以甘肃西峰南小河沟小流域径流场为研究对象，采用横向对比分析的方法，在降雨量相同的条件下，对4种植被类型小区（农田、林地、人工草地和天然荒坡）进行了产流产沙、雨能和抗侵蚀能力的分析。结果表明，农田的径流系数最大，最高可达36.33％；林地的径流系数最小。基本在1％以下；农田的产沙量是林地的2～4倍，是天然荒坡的4～7倍；各种植被对雨能的影响不大；农田的抗侵蚀能力最差，其他3种植被小区相当。 |
| 关键词: 黄土沟壑区 植被变化 产沙产流 |
| DOI： |
| 分类号:S157.1 |
| 基金项目:国家自然科学基金项目（50209016）；陕西省重点实验室项目（04JS15）；西北农林科技大学高级访问学者项目 |
|
| Influence of vegetation change on producing runoff and sediment in gully region of Loess Plateau |
|
LI Miao SONG Xiao-yu SHEN Bing LI Huai-you MENG Cai-xia
|
| Abstract: |
| The variety of runoff,sediment,power of rain and erosion resisting power of four vegetation forms are studied under the condition of the same rainfall in small watershed gully region of loess plateau.It shows that the runoff coefficient of farmland is the biggest 36.33%,the wooded land is the least,not more than 1%.The sediment yield of the farmland is 2-4 times more than that of the wooded land and 4-7 times more than that of the natural wild land;The influence of rain power in four vegetation forms is not obvious;The effect of the farmland is worst in erosion resisting power,and the rest are almost the same. |
| Key words: gully region of locss plateau vegetalion change runoff and sedimant production |
