9 results about "Anthropogenic factor" patented technology

The invention belongs to the technical field of forest carbon sink management, and discloses a forest carbon sink spatio-temporal dynamic monitoring method based on multi-source data fusion, comprising the following steps: acquiring multi-source data associated with carbon sink spatio-temporal dynamic monitoring in the southeast of Tibetan, and preprocessing the multi-source data; constructing a carbon sink estimation model; constructing a coupling influence model based on the multi-factor influence factors; and based on an influence mechanism analysis result, a natural driving path and a manual driving path are distinguished, a dominant driving mechanism is defined, and a targeted improvement strategy is formulated in combination with the characteristics of the southeast Tibetan forest ecosystem. By adopting the method, the time-space dynamic data of the structure and the carbon sequestration function of the southeast Tibetan forest ecosystem are accurately obtained; the coupling influence mechanism of biological factors, environmental factors and human factors on the carbon sequestration function of the southeast Tibetan forest is systematically analyzed; a dominant path and an interaction mechanism for natural and human factors to drive the carbon sink change of the southeast Tibetan forest are defined, and technical support is provided for regional forest ecological system protection and carbon sink management.

The application discloses a soil salinity inversion method and system based on multi-modal remote sensing data fusion, a device and a storage medium, and is applied to the technical field of soil quality monitoring.The method comprises the following steps: acquiring radar and optical remote sensing data of a soil salinity area to be inversed, and performing conductivity determination as an inversion index of soil salinity; acquiring multi-modal remote sensing features based on radar and optical remote sensing data fusion, combining the radar and optical remote sensing data, and based on a random forest algorithm, using a recursive feature elimination method to optimize the remote sensing feature combination, using cross validation to evaluate the model performance of the remote sensing feature combination, and obtaining an optimal remote sensing feature combination; based on the optimal remote sensing feature combination, a soil conductivity prediction model based on the random forest algorithm is constructed and trained, inputting the data to be measured into the conductivity prediction model after hyperparameter adjustment, and the soil salinity inversion is completed.The application realizes more accurate inversion of soil salinity under the interaction influence of complex environment and human factors.

The invention belongs to the technical field of gas reservoir exploration, and particularly relates to a method and a system for depicting a water invasion dominant channel space of a fractured-porous gas reservoir. The method comprises the following steps: establishing a dual-medium fine geological model, wherein the dual-medium fine geological model comprises a matrix porosity model and a discrete fracture network model; obtaining a matrix permeability model according to the matrix porosity model, and obtaining a fracture permeability model according to the discrete fracture network model; matrix heterogeneity characterization parameter gridding is carried out based on the matrix permeability model, and fracture heterogeneity characterization parameter gridding is carried out based on the fracture permeability model. According to the method, the near-wellbore zone water invasion channel or the seepage barrier can be accurately judged, the whole gas reservoir water invasion channel or the area to be subjected to water invasion can be predicted, the influence of human factors is reduced, and the method is visual, fine, high in calculation efficiency and high in accuracy for the crack-pore type reservoir. And predicting the geometrical morphology and spatial configuration relation of the water invasion channel with comprehensive evaluation parameters.

This invention relates to the field of oil and gas reservoir geological exploration technology, specifically a method for identifying multiple fracture stages in buried hill oil and gas reservoirs based on tectonic stress field evolution. The method includes the following steps: Tectonic evolution history analysis step: Geological data of the target buried hill oil and gas reservoir area are systematically collected. Based on seismic profiles, stratigraphic contact relationships, tectonic deformation characteristics, and chronological data, a comprehensive analysis is conducted to construct a multi-stage tectonic evolution history of the area from the Paleozoic to the Cenozoic, accurately determining the geological age and tectonic nature of each key tectonic event. Compared to existing technologies, this application establishes a quantitative discrimination model based on mechanical principles through paleostress field numerical simulation and quantitative prediction of theoretical fracture parameters. This standardizes and quantifies the fracture stage identification process, significantly reducing the uncertainty caused by human factors, improving the objectivity and repeatability of the discrimination results, and achieving a leap from qualitative analysis to quantitative discrimination.

The invention belongs to the technical field of geophysical exploration, and discloses a method and a device for drawing a clastic rock sedimentary facies diagram by using a digital language and a medium, lithology data is processed and then combined with seismic attributes, and the clastic rock sedimentary facies diagram is simply and quickly drawn through digital processing. According to the method, uncontrollable interference of human factors in a traditional method is overcome, and errors and low efficiency caused by human cognitive differences and experience differences are avoided. The method is simple and convenient in process and high in accuracy, the device and the medium based on the method are convenient to use, the clastic rock sedimentary facies diagram can be rapidly and efficiently drawn, the facies belt analysis efficiency is greatly improved, and great contribution is made to oil and gas exploration and development projects.

This invention discloses a method, system, and medium for determining the suspended sediment transport threshold at the watershed outlet and attributing the main controlling factors. The method includes the following steps: 1. Watershed data and multi-factor coding; 2. Definition and extraction of physical constraint thresholds; 3. Batch simulation of multiple scenarios; 4. Generation of monthly-scale threshold sequences; 5. Control variable attribution analysis. This application achieves a formal definition and extraction of the suspended sediment transport threshold at the watershed outlet within a distributed water and sediment model framework. Based on the control variable method and massive scenario simulation, it quantitatively identifies and ranks the contributions of different natural and anthropogenic factors to the change of this threshold, thereby providing a scientific basis for watershed sediment regulation and management.

The present invention belongs to the field of rice salt-tolerance research, and specifically relates to a method for accurately evaluating salt tolerance of rice using spectroscopy. Compared with conventional salt-tolerance evaluation methods, the present technical solution can significantly shorten the testing cycle, increase evaluation efficiency, and reduce test errors caused by human factors. In addition, the evaluation method of the present invention uses the variation of spectral indices to evaluate the salt tolerance of rice seedlings, greatly improving resolution, enabling more accurate evaluation of salt-tolerance capability, and also greatly improving the repeatability and stability of evaluation results for salt tolerance at the rice seedling stage.