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Floral Diversity of abandoned Mansions and the Influence of Soil Properties on These Unique Vegetations

American Journal of Plant Sciences 2021年第10期12卷 1559-1600页

作者： Md. Tahidul Islam Md. Mahadiy Hasan Md. Ashikur Rahman Laskar Subroto K. Das Tania Sultana Department of Botany University of Barishal Barishal Bangladesh

abandoned land and mansions are always a matter of curiosity to the human beings. They are treated as haunted places in many societies. In the present research, three decrepit abandoned mansions from the southern Bangladesh were investigated to measure their floral diversity, physico-chemical properties of soil and the soil-plant interrelationship which is responsible for the diversification of wild flora within the regions. From Shannon and Simpson diversity indexes, it can be deducted that the floral diversity within the abandoned mansions has a positive relationship with their territory size. The high values of Margalef’s and Menhinick’s species richness indexes confirmed that these areas are a rich source of a large number of plant species. A great variation in soil physico-chemical properties has been observed during the analysis. Soil organic matter, nitrogen, phosphorus, potassium & moisture contents were varied significantly from one quadrat to another in every site. Biplot analysis showed that the distribution of plant species in abandoned mansions is primarily determined by the organic matter, pH, moisture and potassium contents of soil. As these factors were present in versatile distribution within the studied regions, a great number of plants can grow in the same area simultaneously. So these areas should be protected from human intervention to process natural selection and in situ conservation of plant species.

关键词： Floral Diversity abandoned area Soil Properties Vegetation

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Study on Vegetation Characteristics & Soil Properties of Secondary Grassland in Farmland areas abandoned for Different Years in Minqin Oasis

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Agricultural Biotechnology 2022年第5期11卷 65-71页

作者： Chunxiu GUO Lide WANG Fanglan HE Dacheng SONG Hao WU Heran ZHAO Fanglin WANG Baoyi XU State Key Laboratory Breeding Base of Desertification and Aeolian Sand Disaster Combating Wuwei 733000China Gansu Desert Control Research Institute Lanzhou 730070China

[Objectives]This study was conducted to investigate the vegetation community characteristics and soil properties of secondary grassland in abandoned farmland areas of different years in Minqin Oasis. [Methods] By the method of space-for-time substitution, the changes of vegetation community characteristics(species composition, structural characteristics and important values) and soil microbial and enzyme activity were determined, and the correlation between various soil factors was analyzed. [Results](1) There were 39 species belonging to 32 genera of 15 families in the research area, including 8 shrub plants, 15 perennial herbs and 16 annual herbs.(2) Soil microbial biomass carbon, nitrogen and phosphorus contents were higher in the upper layer than in the lower layer, and the phenomenon of “surface aggregation” was obvious. The differences were different with the change of abandoned years.(3) Soil catalase content was the highest among different plots, and soil phosphatase, sucrase and urease all showed a trend of fluctuating decline with the increase in abandoned years. Soil enzyme changes were different in different soil layers. [Conclusions] This study can provide a theoretical basis for the restoration, reconstruction and rational protection and utilization of secondary grassland in abandoned farmland.

关键词： Minqin Oasis Different years Secondary grassland abandoned area Vegetation characteristics Soil properties

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