Wen Guang-Chao, Sun Shi-Kui, Li Xing, Xie Hong-Bo
Institute of Resource and Environment, Henan Polytechnic University, Jiaozuo 454000, Henan, China.
Ying Yong Sheng Tai Xue Bao. 2021 Aug;32(8):2906-2914. doi: 10.13287/j.1001-9332.202108.019.
In order to clarify the eco-environmental quality and its evolution characteristics of Keluke Lake basin, we selected 15 factors of physical geography, meteorology, land use/cover and social economy using comprehensive investigation, remote sensing interpretation and inversion, statistical analysis and other technical means, based on the relevant theories of environmental ecology. We used factor analysis and entropy method to calculate the index weight, constructed watershed soil quality model and ecological environment quality diagnosis model, and analyzed the changes of soil and eco-environmental quality in the Keluke Lake basin in 2000, 2005, 2010 and 2015. The results showed that the average eco-environmental quality in four periods was 21, 47, 54, and 72, showing a stable upward trend. The eco-environmental quality level changed from poor to good, while soil quality was at the middle level. Spatially, the eco-environmental quality of the northern mountainous area, the downstream wetland and the surrounding area of the river improved significantly. The change of eco-environmental quality was a result of human activities and natural factors. Soil quality and lake area were key factors indicating the eco-environment of the Keluke Lake basin. The minimum ecological water demand of the Keluke Lake was the basic guarantee to maintain the benign development of the eco-environment of the lake basin.
为阐明克鲁克湖流域生态环境质量及其演变特征，基于环境生态学相关理论，运用综合调查、遥感解译与反演、统计分析等技术手段，选取了自然地理、气象、土地利用/覆盖及社会经济等15个因子。采用因子分析法和熵权法计算指标权重，构建流域土壤质量模型和生态环境质量诊断模型，分析了2000年、2005年、2010年和2015年克鲁克湖流域土壤及生态环境质量变化。结果表明，四个时期生态环境质量均值分别为21、47、54和72，呈稳定上升趋势。生态环境质量等级由差变好，土壤质量处于中等水平。空间上，北部山区、下游湿地及河流周边区域生态环境质量改善明显。生态环境质量变化是人类活动和自然因素共同作用的结果。土壤质量和湖泊面积是表征克鲁克湖流域生态环境的关键因子。克鲁克湖最小生态需水量是维持流域生态环境良性发展的基本保障。
