Study on Black Soil Loss in Songliao Plain Based on RS and GIS
详细信息
- 责任者：Xing Yu (School of Geoexploration Science and Technology ; Jilin University ; Changchun 130026 ; China) ; Jiang Qigang
- 刊名：Journal of Earth Sciences and Environment
- 出版年：2010
- 卷期：32(2)
- 关键词：遥感 ; remote sensing ; 地理信息系统 ; geographic information system ; 水土流失 ; soil erosion ; 松辽平原 ; Songliao Plain
- 页码：p.189-194
- 图表：5 illus., 2 tables, 16 refs.
- 分类号：1800
- issnNo：ISSN1672-6561
- isbnNo：CN61-1423/P
摘要
Based on RS and GIS,current distribution and dynamic changes of black soil were analyzed,the spatial-temporal characteristics of black soil loss were discussed with TM data in 1986 and ETM data in 2001,the gully linear density to quantify the trend of black soil loss was introduced in Songliao Plain.The results show that the area of typical black soil in Songliao Plain is 54 989.92 km2,the distribution appears arc-shaped banded along the line of railway from Beijing to Harbin;the area of black soil reduces by 3 765.21 km2 from 1986 to 2001 with an average decrease of 251.01 km2/a,and mainly distributes in both sides of river,or near large construction sites,or in the peripheral of saline-alkali soil;if only considering the effective effect of gully,it is estimated that the black soil could transform into gully with a velocity of 1 411.0 km2/a in 2016,and the black soil loss is serious.
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