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- Title
Effects of land use change on soil erosion intensity in small watershed of Loess Hilly Region: A quantitative evaluation with 137-Cesium tracer.
- Authors
Wang Ya-Feng; Fu Bo-Jie; Chen Li-Ding; Lü Yi-He; Luo Chun-Yan
- Abstract
Based on the land use change data and by using 137Cs tracer technique, this paper studied the change process of soil erosion intensity in Yangjuangou watershed in Loess Hilly Region. Since the 1980's, the land use intensity in the watershed decreased gradually. In 1980-2006, the slope arable land decreased from 94.9 hm2 to 0.2 hmb2, while the forest land, shrub land, orchard land, and grassland increased from 0 to 51.1 hm2, from 0 to 19.2 hm2, from 0 to 18.0 hm2, and from 76.9 hm2 to 80.1 hmb2, respectively. The soil erosion intensity was in the order of slope arable land > shrub land > orchard land > grass land > forest land. In 1980, 1984, 1996, and 2006, the soil erosion intensity was 6408.9, 5362.4, 4903.9, and 3641.4 t · km-2 · a-1, respectively, being changed from intense to moderate. Soil and water conservation and vegetation restoration were the main causes of the decrease of soil erosion intensity in the study area.
- Subjects
CHINA; LAND use; SOIL erosion; WATERSHEDS; CESIUM; SLOPES (Physical geography); FORESTS &; forestry; SHRUBLANDS; GRASSLANDS
- Publication
Chinese Journal of Applied Ecology / Yingyong Shengtai Xuebao, 2009, Vol 20, Issue 7, p1571
- ISSN
1001-9332
- Publication type
Article