Allocation of water and land resources and ecological security in the black soil area of Northeast China

作者：Qi Peng, Jiaxin Sun, Guangxin Zhang, Jingxuan Sun, Ming Jiang, Changlei Dai · 发表于：Chinese Science Bulletin (Chinese Version) · 年份：2024 · DOI：10.1360/tb-2023-1270 · 被引用次数：9 · 研究领域：Plant Ecology and Soil Science、Water Resources and Sustainability、Soil and Land Suitability Analysis

In the context of rigid water resource constraints, realizing the rational allocation of water and land resources in the black soil area of Northeast China is of great significance in guaranteeing sustainable food production and ecological security. A continuing international frontier problem is how to integrate water resources, planting structure, food production, economic efficiency, carbon sequestration and ecosystem pattern in the optimal allocation of soil and water resources. Therefore, this study firstly analyzed the evolution of water and land resources in the black soil area of Northeast China, and then developed a water and land resource optimization model based on water-carbon-economy-ecology coupling. The model was solved with the NSGA Ⅲ intelligent algorithm. Finally, the developed model was used to analyze the optimal allocation of water and land resources and ecological security of 40 cities under four scenarios: conventional irrigation in a normal water year, water-saving irrigation in a normal water year, conventional irrigation in a dry water year, and water-saving irrigation in a dry water year. The results show the following: (1) Land-use types have changed considerably under the influence of climate change and human activities over the past 40 years, with the areas of paddy fields and dry fields increasing by 91% and 14%, and the areas of woodlands, grasslands and wetlands decreasing by 2%, 27% and 10%, respectively. During the 10-year period from 2000 ...