Informations et ressources scientifiques
sur le développement des zones arides et semi-arides

Titre : Research on Characteristics of Soil Nutrient Resources and Management Strategies under Different Land Covers in Desert Oasis Area

Auteur : 闫娇

Grade : Master 2022

Université : Northwest Normal University

Résumé partiel
“Soil is the carrier for the growth of all things” and soil nutrients play an important role in the whole life cycle of plants.Therefore,how to do a good job in soil nutrient resource management and give full play to the effectiveness of soil nutrients has long been a subject of in-depth study by scholars in the fields of soil,ecology,resources and environment.However,for the desert oasis area in the middle reaches of the Heihe River,which is deep in the interior of northwest China and has an extremely fragile ecological environment,further investigation into the characteristics of soil nutrient resources and their management strategies under different land covers in this area is still of great value in vegetation construction,ecological protection and maintenance of oasis stability.The main objective of the paper is to study the current situation of soil nutrient resources in several typical land cover types（farmland,poplar forest,camphor pine,pike,fixed sand,sand dune）in the middle reaches of the Heihe River desert oasis.The results of the study showed that the soil nutrient content and abundance characteristics under each land cover in the desert oasis area were evaluated,and the strategies for soil nutrient resource management under each land cover in the desert oasis area were proposed,which can provide reference for the efficient utilization and scientific management of soil nutrient resources in the study area.The scientific research results show the following :（1）From the results of descriptive statistical analysis of soil nutrient contents and the conclusion of relevant data analysis,the nutrient contents of total nitrogen,total phosphorus,fast-acting nitrogen,fast-acting phosphorus and fast-acting potassium in the desert oasis area in the middle reaches of the Heihe River under different soil cover conditions are distinctly different and not strongly correlated among soil nutrients.（2）From the analysis of soil nutrient content abundance and deficiency characteristics,the total nitrogen and phosphorus nutrient contents were generally deficient under different land covers in the desert oasis area,while the quick-acting nitrogen,quick-acting phosphorus and quick-acting potassium nutrient contents were generally moderate.（3）From the comprehensive analysis of soil nutrients and the results of nutrient resource characteristics,the soil nutrient resources of sorrel are the most abundant,followed by wetland,and the soil nutrient resources of camphor pine,farmland,poplar forest,fixed sand and sand dune are decreasing in order.（4）Based on the characteristics of soil nutrient resources under different land covers in the desert oasis area,corresponding management strategies are proposed,which can help the vegetation construction,ecological protection and oasis stability in the area

Mots clés : desert oasis area ;different landcover ;soilnutrientresources;management strategy ;

Présentation (CNKI)