Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2021, Vol. 37 ›› Issue (33): 98-104.doi: 10.11924/j.issn.1000-6850.casb2021-0207

Special Issue: 耕地保护

Previous Articles     Next Articles

Construction of Black Soil Quality Evaluation Index System in Heilongjiang Province

Jiang Ning1(), Wang Bin2, Xie Yonggang3   

  1. 1College of Water Conservancy and Electric Power, Heilongjiang University, Harbin 150086
    2College of Water Conservancy and Civil Engineering, Northeast Agricultural University, Harbin 150030
    3College of Economics and Business Administration, Heilongjiang University, Harbin 150074
  • Received:2021-03-03 Revised:2021-06-03 Online:2021-11-25 Published:2022-01-06

Abstract:

Black soil has higher fertility and is suitable for agricultural cultivation. As the largest black soil province in China, due to soil erosion and long time high strength of overuse, Heilongjiang Province has the problems of black soil run off and fertility decline. The study established a black soil quality evaluation index system to improve the quality of black soil with different protective measures according to its quality grade. To embody the characteristics of black soil, taking representativeness and accessibility into consideration, the authors selected 4 first-class indexes and 23 second-class indexes to construct the black soil quality evaluation index system, then used the comprehensive evaluation index of black soil to determine the quality grade of various land use types. The results showed that the fist-class indexes of thickness of soil layer, soil nutrient, soil acidity and alkalinity and soil erosion, and the second-class indexes of thickness of black soil layer, organic matter content, total nitrogen content, total phosphorus content, soil pH were used to evaluate the situation of improvement and deterioration of black soil. Quality grade of black soil was determined according to the comprehensive evaluation index of black soil quality. Using this evaluation index system to track the change of black soil quality in Heilongjiang Province cloud provide certain references for the evaluation of protection measures and their implementation effect.

Key words: Heilongjiang Province, black soil, evaluation index system, quality grade, black soil protection

CLC Number: