53 results about "Grassland ecosystem" patented technology

The invention discloses a method for restoring arbuscular mycorrhizal fungi of a vegetative cover in a land with discarded iron tailings of a grassland ecosystem, and relates to the technical field of ecological restoration of vegetative covers in a land with discarded metal tailings. The method for restoring arbuscular mycorrhizal fungi comprises the following steps of: (1) covering earth on iron tailings for 3 to 7 centimeters deep; (2) inoculating arbuscular mycorrhizal fungicides such as Glomus versiforme and the like at the place 0 to 3 centimeters far from the earth; (3) planting plants such as Elymus dahuricus Turcz and the like, harvesting the plants after 60-day to 120-day growth, using the plants which meet a relevant standard as feed, and centralizedly burning and landfilling the plants which do not meet the relevant standard. The method for restoring the arbuscular mycorrhizal fungi has the following advantages that: the adopted arbuscular mycorrhizal fungi symbiose with herbs easily so that the absorption and utilization of nitrogen, phosphorus and potassium are promoted, the absorption or transferring of heavy metals is reduced, the thickness of covering earth is reduced, the growth situation of plants is improved, the planting and growth of plants in iron tailings covered with earth are promoted, the method for restoring the arbuscular mycorrhizal fungi has high success rate of revegetation, simple process and lower cost, and is applicable to management of lands with discarded iron tailings of grassland ecosystems.

The invention discloses a method for calculating the consumption of water resources in grassland irrigated land, which uses the stable and gradual change characteristics of the reference crop coefficient in the grassland area on the time scale, and expands the ET long sequence of the equivalent decomposition area, and uses the improved reference crop coefficient method to couple The regional reference crop evapotranspiration realizes the expansion of the long sequence of evapotranspiration in the grassland region under the absence of remote sensing images, especially under the interference of non-sunny days, and solves the difficult problem of ET calculation in the remote sensing region, and improves the accuracy of the long sequence calculation of evapotranspiration in the grassland region. Aiming at the calculation problem of water resource consumption in grassland irrigated land, the present invention quantifies and determines the GW value of water resource consumption in crop growing season in irrigated grassland area through the calculation model of water resource consumption in grassland area, and defines the real-time monitoring and management of groundwater resources in grassland area It provides a typical case analysis reference for the development and utilization management of groundwater resources in grassland areas and grassland ecosystem research.

The invention discloses a method for promoting the growth of leguminous plants by using arbuscular mycorrhizal fungi and rhizobia, which can improve the output and quality of legume grassland without damaging the grassland ecosystem. By inoculating arbuscular mycorrhizal fungal agents and rhizobia, this method can promote the nutrient absorption of legume plants, improve the diversity and stability of the community, improve the utilization rate of space soil fertilizer, promote nitrogen fixation of legumes, and assist host plants to absorb soil Nutrients can loosen the soil, eliminate soil compaction, improve soil structure, reduce the amount of chemical fertilizers and pesticides, prevent the loss of artificial nitrogen fertilizers, reduce environmental pollution, and protect ecological safety. Compared with chemical fertilizers, they have higher utilization rates and longer action times. And it can increase the organic matter and nutrient content of the soil, improve and fertilize the soil, reduce the emission of greenhouse gases, and thus promote the virtuous cycle of the grassland agricultural ecosystem. It is suitable for popularization and application in the technical field of forage planting.

The invention relates to the field of heat wave research, in particular to an experimental device for measuring the influence of heat wave climate and mowing on a grassland ecosystem. A simulated heatwave supporting bracket is horizontally arranged on the ground, transparent plastic cloth covers the outer side of the simulated heat wave supporting bracket, a heater is arranged on the top of the inner side of the simulated heat wave supporting bracket, a temperature tester is arranged on the upper portion of the inner side of the simulated heat wave supporting bracket, and a soil carbon flux automatic measuring system and a soil moisture tacheometer are arranged on the ground at the outer side of the simulated heat wave supporting bracket. The experimental device has a simple structure andreasonable design, and can conduct heat wave climate simulation on a grassland in a test area at any time and simulated mowing on vegetation in the test area, the carbon flux and water flux of the soil can be monitored and recorded in real time, and the maximum degree of mowing borne by the grassland ecosystem in the test area under the heat wave climate is simulated to provide effective reference for local vegetation-reducing work such as mowing, grazing and the like.