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Lanzhou Jiaotong University (兰州交通大学) 2021

Preliminary Analysis of Desert Vegetation Community and Soil Properties in Liangucheng National Reserve in Minqin County,Gansu Province

王蕊

Titre : Preliminary Analysis of Desert Vegetation Community and Soil Properties in Liangucheng National Reserve in Minqin County,Gansu Province

Auteur : 王蕊

Grade : Master 2021

Université : Lanzhou Jiaotong University (兰州交通大学)

Résumé partiel
Liangucheng National Reserve is an important nature reserve which is located in Minqin,Gansu Province of Northwest China.Minqin oasis is surrounded by the reserve.It is a main source of sandstorm and one of the worst areas of sand dust in China.Minqin oasis is located between Badain Jaran Desert and Tengger Desert.It wedges between the two deserts,hindering the closure of the two deserts.Because of this,the ecological status of Minqin oasis is extremely important.Liangucheng National Reserve is located in the desert area around Minqin oasis.The establishment and development of the reserve is of great significance to the improvement of the natural environment in Minqin Oasis and its surrounding areas.Due to the vulnerability of its desert ecosystem,the reserve is easy to be affected by many factors,such as desertification,the expansion of surrounding population and other factors.The situation of ecological environment is very severe in the reserve.It is urgent to strengthen its protection and management.The analysis in the reserve can provide scientific basis for fixed-point control of desert,and the basic data of vegetation community and soil characteristics is useful for ecological restoration and sustainable development of regress desert grassland in the reserve.In order to explore the basic characteristics of vegetation community and soil properties in arid desert area around Minqin oasis and to improve the natural environment of arid desert area.In this paper,the landscape pattern index method was used to analyze the vegetation community pattern of Liangucheng National Reserve,and the vegetation community situation of the reserve was explored from three aspects(patch stability,landscape fragmentation and landscape diversity).We collected soil from different vegetation types and landforms,and measured soil physical and chemical properties(such as p H,organic matter,water content,nitrogen,phosphorus and potassium)in laboratory.The traditional statistical method,geostatistical method and spatial analysis method were used to explore the basic characteristics of soil and vegetation communities with their relationship in the study area.

Mots clés : Liangucheng National Reserve ;desert vegetation community ;landscape pattern ;soil physical and chemical properties ;landform;

Présentation (CNKI)

Page publiée le 24 mars 2022