44 results about "Alien species" patented technology

A method for eliminating alien species and undesirable organisms from ballast water of a marine vessel. Ballast water (204) is injected into a container (202). An organic substance is added to the ballast water. Heterotrophic organisms (219) in the ballast water reproduce and consume the organic substance (218). The heterotrophic organisms substantially reduce the oxygen level in the ballast water compared to the oxygen level of untreated ballast water. The alien species and undesirable organisms die due to lack of oxygen.

A method for eliminating alien species and undesirable organisms from ballast water of a marine vessel. Ballast water (204) is injected into a container (202). An organic substance is added to the ballast water. Heterotrophic organisms (219) in the ballast water reproduce and consume the organic substance (218). The heterotrophic organisms substantially reduce the oxygen level in the ballast water compared to the oxygen level of untreated ballast water. The alien species and undesirable organisms die due to lack of oxygen.

The invention discloses a biology soil preparing method for soil animal ecological restoration in an abandoned farmland and relates to a soil preparing method for abandoned farmland ecological restoration. The technical problems that currently, restoration and improving attention on soil animals from animal soil is low, soil animal restoration is purely by nature, restoration speed is low, and community composition is not complete are solved. The method comprises the steps that first, a biology soil base is prepared; second, the biology soil base is cultured in a pre-restoration target natural ecosystem; and third, the biology soil is transplanted to the abandoned farmland. The method has the advantages that the biology soil is cultured in the natural ecosystem, soil animals in the biology soil are attracted and amplified, then transplanting to the abandoned farmland is carried out, the fact that the soil animals are native species is guaranteed, invasion of alien species is avoided, ecological risks are avoided, soil animal restoration in the abandoned farmland can be promoted effectively, the effects of soil improving, soil organic matter increasing, soil porosity enlarging and water retention and weight gaining are achieved, and operation is easy.

The invention provides a method for evaluating the value of a financial activity participant subject based on a relation matrix. The main strategies are as follows: initializing an initial weight vector of an activity subject; initializing an input and output correlation vector of an existing activity subject; Through multi-source data acquisition and fusion, the positive correlation matrix amongthe active agents is constructed. Inverting the association vectors of each target subject and constructing an inverted association matrix; Based on the inverse association matrix and the initial weight vector, the trusted weight vector of the active agent is obtained. Based on the positive correlation matrix and the trusted weight vector, the value evaluation vector of the active agent is obtained. The method processes the data of the active body in depth by introducing an inverse correlation matrix, In the process of activity subject value evaluation, the phenomenon of 'alien species invasion' is effectively avoided, and the anti-interference ability of the evaluation activity is significantly improved, so that each activity subject forms the value evaluation value matched with their owncredibility in the comprehensive value evaluation. At the same time, with the help of association matrix and limited iterative evaluation, the evaluation efficiency of the evaluation process is significantly improved, and the real-time evaluation of the activity subject value is realized.

The invention discloses a method for restoring degraded wetland vegetation by improved wetland soil seed banks. The method comprises the following steps: 1) according to a principle of adjusting measures to local conditions, selecting a soil seed bank from natural wetland seed banks, wherein the seed density of the seed bank is not less than 5000 grains.m<-2>; 2) mixing soil seed banks with different sources, or adding naturally harvested seeds; 3) preparing a biological rhzomorph; 4) adding the biological rhzomorph obtained in the step 3) to obtain an improved soil seed bank; and 5) covering improved seed bank soil on a wetland with degraded vegetation by adopting an exotic soil method, thereby forming vegetation by natural germination. The method for restoring the degraded wetland by using the soil seed banks, disclosed by the invention, has the following advantages: 1) materials are easy to obtain, the cost is low, and the operation is simple and feasible; 2) a wetland succession law is followed, the degraded wetland vegetation is restored quickly and naturally, and the invasion of alien species is controlled; and 3) multiple species coexist, the structure is stable and can realize self-renewal, and ecological landscapes are rich.

The invention discloses a kit product suitable for quantitative detection of spotted wing Drosophila pest damage based on terrestrial environment DNA. The kit includes Drosophila spotted wing upstream primer (BCGY4‑F), Drosophila spotted wing downstream primer (BCGY4‑R), Taqman fluorescent probe and qPCR Mix four reagents. This kit can be used in conjunction with other commercially available products, such as Carmel peristaltic pumps, Millipore polycarbonate erosion membranes, qPCR8-connected tubes, etc., to quantify the results on fruits and vegetables that have been mixed with Drosophila spotted wing for a period of time. The amount of DNA left by Drosophila spotted wing was detected. Steps for use: 1. Take fruits and vegetables and rinse; 2. Etch the filter membrane to filter the rinse solution; 3. Cut the filter membrane to collect eDNA; 4. Use eDNA as a template to perform qPCR reaction. This product can be used in the qualitative detection of pests in orchards, with high specificity and good timeliness; it can also quantitatively detect the density of pests in the environment, which is conducive to reflecting the seriousness of pest damage and predicting the occurrence of pest damage in the next year. At the same time, this product also has potential value in customs detection of invasive alien species and ecological population analysis.

A method for rapid restoration of barren hill vegetation in the present invention comprises the following steps: A. Find the local natural forest; B. Select the plot and divide it into patches with a size of 5 m×5 m; investigate the species, individual size and common trees in each patch in each patch; C. The barren hills to be restored are divided into 5 m×5 m grids, and the type of each patch on the barren hills is determined compared with the natural forest patches; D. Plant different types of plants in different patches; the species of plants planted in each patch is determined according to the dominant community of natural forest in field survey; E. Replant the dead seedlings and saplings after 2‑3 years of planting; after 6 years of planting, cut branches of taller plants to provide space for other species to grow; selectively cut down non-native species to avoid alien species destroy. The invention is economical and convenient, overcomes the drawbacks of plantation or single planting type, and realizes the natural renewal of the forest and the protection of biological diversity.

The invention discloses an ecologicalization productive culture method for blueberries, and aims to solve the problem that nutrient substances on the surfaces of the blueberries cannot be removed completely and the edible value of the blueberries is lowered greatly since excessive alien species exist at present, prevention and control of insect diseases are difficult and people need to treat the blueberries once with a cleaning agent before eating if insects and diseases are wiped out by spraying pesticides. According to the technical scheme,54 parts by mass of livestock manure, 22 parts of broad-leaved tree timbers and 4 parts of cake powder are used. The method has the advantages that no soil-containing substrate is used, nutrients needed during growth of blueberry young plants can be supplemented, and the influences of worm eggs and aerobic bacteria contained in natural soil and other plant diseases on the plants are avoided.