| Cite this article: | 王露露,王天亮,高斌,等.黑龙江省松嫩平原土地盐碱化时空动态变化与影响因素分析[J].灌溉排水学报,2022,():-. |
| WANG Lulu,WANG Tianliang,GAO Bin,et al.黑龙江省松嫩平原土地盐碱化时空动态变化与影响因素分析[J].灌溉排水学报,2022,():-. |
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| Analysis of spatial and temporal dynamics and influencing factors of land salinization in Songnen Plain, Heilongjiang Province |
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WANG Lulu1, WANG Tianliang2, GAO Bin3, HE Huaizhen2, DING Xiaowen1, HOU Baodeng3
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1.School of Environmental Science and Engineering,North China Electric Power University;2.Heilongjiang Water Conservancy Design Institute,Heilongjiang Province;3.China Institute of Water Resources and Hydropower Research
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| Abstract: |
| 【Objective】To explore the spatial-temporal dynamic changes and influencing factors of land salinization in Songnen Plain of Heilongjiang Province.【Method】Remote sensing data interpretation, correlation analysis and relative contribution rate analysis were used to study the spatial and temporal distribution characteristics of land salinization area in Songnen Plain, and the main influencing factors of land salinization area change were identified.【Results】(1) From 2000 to 2020, the salinized land area in Songnen Plain decreased with a decreasing rate of -13.67 km2/5a. (2) The salinization degree of Qiqihar city and Suihua city is aggravated, and the salinization land of Daqing city is improved obviously. Although the salinization land of Harbin city is improved gradually, it has a certain rebound in 2020, and there is a risk of further deterioration. (3) The main reasons for the change of land salinization area in different cities in Songnen Plain are as follows: Qiqihar and Harbin represent the sown area of crops and the number of livestock; Suihua represent GDP, population and sown area of crops; Daqing represent the amount of surface water resources and evaporation.【Conclusion】The main factors promoting the change of land salinization area in Songnen Plain are the development of social economy, agriculture and animal husbandry, and the change of climate also has a certain impact on land salinization. The direct influencing factor is climate condition. In the process of amelioration and treatment of saline-alkali land in the future, the management measures should be improved according to the above factors, so as to reduce the area of saline-alkali land and improve the efficiency of land use. |
| Key words: land salinization; Space-time change; Remote sensing interpretation; Songnen Plain; Factors affecting the |
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