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Six plots (25cm@25cm) were randomly selected in two plots for plant community survey. The survey parameters included the coverage, height, and density of all plant species in the plot, as well as the height and coverage of the plant community. Cut the grass on the ground and dry and weigh. In the two plots, 0 to 20 cm of surface soil was collected, and four replicates were taken. After the pretreatment, available nitrogen, available phosphorus, available potassium, total nitrogen, total phosphorus, total potassium, organic matter, and total salt were respectively taken. In addition, the soil bulk density was measured with a soil bulk density meter, and soil moisture content was measured with a soil moisture detector, and measurements were repeated 15 times in each plot.
The determination of morphological plasticity depended on the foraging behavior of clonal plants is in accord with the resources of the habitat. The Potentilla anserine clone overcomes and alleviates the difficulty of ingestion caused by the heterogeneity of essential resources through morphological plasticity, and adapts its morphological plasticity to the resource conditions before and after the degradation of the alpine meadow, thereby maintaining and increasing the habitat in different habitats. The fitness level. This study provides another example of the habitat adaptation hypothesis.
Analysis of Soil Bulk Density of Grassland with Soil Bulk Densitometer
Grassland degradation often changes the characteristics of vegetation and soil, forming landscapes and habitats that are significantly different from undegraded grassland. Therefore, it is of great theoretical significance to study the plasticity and biomass allocation characteristics of clonal architecture in clonal vegetation of cloned plants, and to explore the utilization and heterogeneity of heterogeneity resources. In recent years, alpine meadows in the source regions of the rivers and rivers have been degraded due to human and natural disturbances such as grazing, rodent activity, and warming and drying climate, resulting in a large number of patched habitats and large areas of secondary bare land/black beach. There is plenty of room for expression of the phenotypic plasticity of the cloned plants. However, due to the variation of soil nutrients and physical characteristics of degraded grassland, which may affect the expression of certain characteristics of clonal plants, a comparative study of clonal growth characteristics of clonal plants in degraded and non-degraded meadow habitats can reveal that the clonal plants The ecological adaptation strategies for different habitats and the validation of habitat adaptation hypotheses provide the basis for the research on the mechanism of degradation succession of alpine grasslands. The soil bulk density meter is an important instrument for determining the soil bulk density of grassland.