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STUDY ON THE EROSION IN TYPICAL BLACK SOIL AREAS OF HEILONGJIANG PROVINCE BY REMOTE SENSING MONITORING TECHNOLOGY |
YANG Jia-jia1, BAI Lei2, WU Song3 |
1. Shenyang Center of Geological Survey, CGS, Shenyang 110034, China; 2. Institute of Geology, Yunnan Geological Bureau of Nonferrous Metals, Kunming 650216, China; 3. Jilin Agricultural University, Changchun 130118, China |
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Abstract Supported by remote sensing and GIS technology, the revised universal soil loss equation(RUSLE) is used as the evaluation model to calculate the soil erosion volume in 2003 and 2015 in Suihua City of Heilongjiang Province. The distribution map of water-soil loss intensity is generated in combination with the grading standard. On this basis, the paper analyzes the current situation, spatial distribution and changes with reasons of water-soil loss during 2003-2015. The results show that with the increase of soil-water conservation measures, the soil erosion condition tends to be relieved. According to the statistical results, the proportions of strong and extremely strong erosion areas decrease, while those of the slight and light erosions increase. In 2015, the strong erosion-graded water-soil loss area reduced by 522.75 km2 compared with that in 2003, and light erosion-graded ones increased by nearly 1000 km2.
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Received: 04 September 2018
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