2 results about "Annual plant" patented technology

The application discloses a kind of community structure water source driving cause-effect relationship analytical method, device, equipment and medium.It includes: obtaining soil water sample, plant water sample, precipitation water sample and groundwater water sample in target sample plot;The layered treatment of soil water sample obtains multilayer soil water sample and soil moisture content;The target sample plot is divided to obtain groundwater depth zoning data;The species number, species proportion and simpson diversity of annual plant and perennial plant are calculated as community structure characterization index;Test to obtain the isotopic characteristic data of each water sample, and input bayesian mixture model to calculate utilization ratio;Key water source factor is identified by redundancy analysis;The cause-effect relationship influence path is analyzed using partial least squares path model, and the complete cause-effect chain of community structure variation and ecological risk early warning basis are output.The present application realizes shallow groundwater grassland plant water source utilization quantification and water source driving cause-effect relationship analysis, and provides technical support for ecological early warning and water resources development.

Provided in the present invention is a method for providing shelter from the wind and for fixing sand in a sandified grassland of Horqin, which method involves: S1, using an automatic sand barrier laying device to lay a mechanical sand barrier in the sandified grassland of Horqin, wherein a material for the mechanical sand barrier is one of or any combination of reed segments, straw mats, rice straw, Salix gordejevii, and Salix psammophila branches; S2, planting biological sand barriers inside the mechanical sand barrier to form a composite sand barrier, wherein the biological sand barriers are shrubs, and the shrubs are a combination of Salix gordejevii, Hippophae rhamnoides, Caragana microphylla, Caragana korshinskii, Corethrodendron fruticosum, Lespedeza davurica, and Artemisia halodendron; and S3, spreading seeds of herbaceous plants between the biological sand barriers, wherein the herbaceous plants comprise leguminous plants, gramineous plants and annual plants, and the ratio, by plant number, of leguminous plants : gramineous plants : annual plants is 3 : 5 : 1. By means of the technical solution of the present invention, the plant survival rate can reach up to 81.5%, and the coverage can reach up to 62.1%.