JOURNAL OF NATURAL RESOURCES ›› 2016, Vol. 31 ›› Issue (5): 833-844.doi: 10.11849/zrzyxb.20150497

• Resource Evaluation • Previous Articles     Next Articles

Effect of Land Use Change on Gully Erosion in Nemoer River Basin of Typical Black Soil Region of Northeast China

WANG Wen-juan1, DENG Rong-xin2, ZHANG Shu-wen3   

  1. 1. College of Resources and Environmental Sciences, Henan University of Economics and Law, Zhengzhou 450046, China;
    2. Institute of Resources and Environment, North China Institute of Water Resources and Electric Power, Zhengzhou 450011, China;
    3. Northeast Institute of Geography and Agroecology, CAS, Changchun 130012, China
  • Received:2015-05-06 Revised:2015-12-03 Online:2016-05-20 Published:2016-05-19
  • Supported by:
    National Natural Science Foundation of China, No.31400612, 41271305; Research Project of Henan University of Economics and Law, No.2015871014

Abstract: The black soil region of Northeast China is one of the most important grain-producing areas in China. However, increasingly severe gully erosion has destroyed much farmland and reduced grain production. In this paper, the typical black soil region of Northeast China which locates in the Nemoer River Basin was chosen as the study area. Based on Corona imagery in 1965 and SPOT 5 imagery in 2005, the distributions of gullies in 1965 and 2005 were obtained; based on relief maps in 1954, MSS imagery in 1975 and TM imagery in 1995 and 2005, the land use data were obtained in different years; then the effect of land use change on gully erosion was analyzed. The results revealed that the area of regions where gully density was greater than 250 m/km2 increased from 0 km2 in 1965 to 4 077.17 km2 in 2005, which accounted for 37.57% of the total eroded area. From northeast to southwest of the region, the increase of gully density changed from dramatic increase to slight increase. Gully erosion on the cultivated land was the most serious, and on the grassland and marsh was the secondary, while on the forest land was the most slight. The gully density increased the most during the interchange between cultivated land and grassland, which was 600.60 m/km2 and 456.08 m/km2, respectively. The gully density increased 346.91 m/km2 during the conversion of the forest to cultivated land. The increase proportion of cultivated land in different gully erosion zones was 29.21%-46.54%. However, the area of grassland and marsh decreased in different gully erosion zones that the proportions of decrease ranged between 27.10%-41.50% and 5.86%-12.50%, respectively.

Key words: black soil region of Northeast China, gully density, gully erosion, land use

CLC Number: 

  • F301.24