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 controlling solanum rostratum by pasture combination. According to the method, the pasture combination of sweet clover, wheatgrass and Chinese wildrye are used to prevent invasion of solanum rostratum; the pasture combination is planted in the easily-invaded natural grassland ecosystem in order to continuously control invasion of solanum rostratum in many years. The sweet clover is a type which can resist solanum rostratum in the invasion habitat, grows in the grassland that solanum rostratum likes and has growth advantage in struggle for existence; the wheatgrass and Chinese wildrye can continuously inhibit growth of solanum rostratum in many years after alternative treatment; due to plantation, rational arrangement and scientific management, the sweet clover pasture combination can play a role in easily-invaded solanum rostratum and invaded ecosystem, inhibit solanum rostratum from quickly growing in natural grassland to occupy space continuously and effectively, and provide basic guarantee for preventing and sustainably treating invasion of alien invasive species such as solanum.

The invention discloses a method for restoring degraded grassland ecosystem by establishing Leymus chinensis and belongs to the field of ecological remediation. The method includes digging a round pitin an establishment site, taking 80-90% of excavated soil, adding slow-release urea, diammonium phosphate and decomposed animal waste, mixing well, and backfilling the round pit; covering the round pit with perforated degradable agricultural film, and planting pre-germinated seeds of Leymus chinensis in soil at perforated parts. The method helps prevent the problems that, for instance, shortage of moisture and nutrients causes low germination rate of Leymus chinensis seeds and low survival rate of seedlings; the method is applicable to the grassland ecosystems degraded, desertified and salinized due to various causes, and allows clonal propagation advantages of Leymus chinensis to be fully utilized so as to arrive at restoring a stretch of land by cultivating of a spot.

The invention provides a method for measuring dynamic response of second productivity of alpine grassland under snow disaster load. Components influencing the second productivity of the alpine grassland are decomposed into four functional modules, namely snow disaster load capacity, grassland ecosystem function maintenance capacity, snow disaster prevention and control capacity and animal productproductivity. The interaction between the components and states of the four modules restricts the size and level of the second sexual production capacity of the alpine grassland. Under the stress andload effects of snow disasters, the second productivity supporting system of the alpine grassland ecosystem can generate corresponding displacement, the larger the snow disaster load force is, the larger the displacement of the system is, and the smaller the second productivity of the grassland is. According to the method, the snow disaster load-displacement response logic relationship is described, the grassland second productivity is described according to the reciprocal of system displacement, and the scientificity, objectivity and accuracy of quantitatively expressing the grassland secondproductivity are improved.

The invention discloses a method for controlling solanum rostratum by pasture combination. According to the method, the pasture combination of sweet clover, wheatgrass and Chinese wildrye are used to prevent invasion of solanum rostratum; the pasture combination is planted in the easily-invaded natural grassland ecosystem in order to continuously control invasion of solanum rostratum in many years. The sweet clover is a type which can resist solanum rostratum in the invasion habitat, grows in the grassland that solanum rostratum likes and has growth advantage in struggle for existence; the wheatgrass and Chinese wildrye can continuously inhibit growth of solanum rostratum in many years after alternative treatment; due to plantation, rational arrangement and scientific management, the sweet clover pasture combination can play a role in easily-invaded solanum rostratum and invaded ecosystem, inhibit solanum rostratum from quickly growing in natural grassland to occupy space continuously and effectively, and provide basic guarantee for preventing and sustainably treating invasion of alien invasive species such as solanum.

The invention discloses a method for promoting leguminous plant growth by using arbuscular mycorrhizal fungi and rhizobium, which can improve the yield and quality of leguminous plant grassland without damaging a grassland ecosystem. In the method, by inoculating the arbuscular mycorrhizal fungi inoculant and rhizobium, nutrient absorption of leguminous plants can be promoted, the diversity and stability of communities can be improved, the space soil fertilizer utilization rate can be increased, leguminous nitrogen fixation can be promoted, host plants can be assisted in absorbing soil nutrients, soil can be loosened, soil hardening can be eliminated, soil structures can be improved, and the dosage of chemical fertilizers and pesticides can be reduced; loss of artificially applied chemicalnitrogen fertilizer is prevented, environmental pollution is reduced, and ecological safety is guaranteed; compared with chemical fertilizers, the utilization rate is higher, the acting time is long,the content of organic matter and nutrients in soil can be increased, fertility soil is improved, emission of greenhouse gas is reduced, and therefore the virtuous cycle of a grassland agricultural ecological system is promoted. The method is suitable for application and popularization in the technical field of pasture planting.

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 belongs to the field of hydraulic engineering, and particularly relates to a non-weighing lysimeter capable of measuring the water seepage quantity and the slope surface water quantity.The lysimeter specifically comprises a lysimeter barrel; the lysimeter barrel is divided into three parts of an exposed section, a soil column section and a filtering section from top to bottom in sequence; the exposed section completely stretches out of the ground; the height of the soil column section is 60%-75% of the total height of the lysimeter barrel, and is 10 cm or above greater than thedistribution depth of 95% or above of local plant root systems in the soil; the soil column section is filled with local soil; an inner ring is arranged in the filtering section; the interior of the inner ring and the space between the filtering section and the inner ring are both fully filled with fillers; and the bottom of the lysimeter barrel is provided with an inner ring drainage opening andan outer ring drainage opening which are connected with an inner water storage tank and an outer water storage tank correspondingly. According to the non-weighing lysimeter, the runoff amount, the seepage quantity and the seepage time can be simply and accurately measured, and operation is easy and convenient; a quantitative calculation method is provided for assessing the water supply capacity ofan ecosystem; and a new idea is provided for assessing the influence of the change of environmental factors on water source supply of a grassland ecosystem.

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.