论文部分内容阅读
【目的】塔里木河流域典型绿洲,不同土地利用方式对土壤酶活性的影响。【方法】通过样区内棉田、林地、荒草地、盐碱地、沙地等不同土地利用方式下土壤过氧化氢酶、脲酶、转化酶、碱性磷酸酶活性的研究,了解其在人为影响下的变化规律。【结果】不同土地利用方式对土壤酶活性有着显著的影响,棉田的脲酶活性较高,林地、荒草地的土壤酶活性基本大于盐碱和沙地;随着土层深度的增加,过氧化氢酶、转化酶、碱性磷酸酶活性的变化规律可以表现为上层土壤酶活性较高,中间下降,下层又有所上升的趋势。【结论】研究为进一步建立土壤质量评价和预警模型、合理进行区域土地规划、优化作物栽培布局提供科学依据,贡献于当地农业可持续发展和生态环境保护。
【Objective】 The objective of this study is to investigate the effects of different land use types on soil enzyme activities in a typical oasis and a landform in the Tarim River Basin. 【Method】 The activities of catalase, urease, invertase and alkaline phosphatase in soils under different land use types, such as cotton field, woodland, wasteland, saline land and sandy land, The law of change. 【Result】 The results showed that different land use types had a significant effect on soil enzyme activities, while urease activity was higher in cotton fields. Soil enzyme activities in forest land and grassland were higher than those in saline and sandy land. With the increase of soil depth, catalase The activities of invertase and alkaline phosphatase showed that the activity of soil enzymes in the upper layer was higher, the middle layer was lower, and the lower layer was also increased. 【Conclusion】 The study provides a scientific basis for further establishing the soil quality evaluation and early-warning model, rationally carrying out regional land planning and optimizing crop cultivation and distribution, contributing to the sustainable development of local agriculture and ecological environment protection.