30 results about "Ecosystem carbon" patented technology

The invention relates to a method and a system for quantitatively estimating carbon reserves of a native coastal wetland ecosystem. The method comprises the following steps: completing native coastalwetland mapping by adopting multi-source and multi-temporal remote sensing data; obtaining native coastal wetland soil and vegetation samples by adopting a traditional sample plot and quadrat investigation method, and realizing soil carbon reserve space inversion by adopting a geographically weighted regression method; adopting a remote sensing technology to realize biomass inversion of the nativecoastal wetland, and combining a biomass carbon coefficient to realize vegetation carbon reserve estimation of the native coastal wetland; and finally, estimating the carbon reserves of the native coastal wetland by combining the soil carbon reserves and the vegetation carbon reserves. The system and the method break through the limitation that the previous research on the native coastal wetlandis only limited to the estimation of experimental points, greatly improve the estimation precision of the carbon reserves, realize the intuitive and reliable analysis of the spatial heterogeneity andreserves of the carbon reserves, and can provide a scientific basis for the carbon cycle research of an ecological system.

The invention discloses an extraction method for influence factors of carbon exchange of an ecosystem and a system. The extraction method includes steps of 1), acquiring attribute data of carbon flux samples in a carbon flux data observation station; 2), inputting the attribute data, which are obtained in the step 1), of the carbon flux samples, selecting the optimal combination by the aid of proposed fuzzy rough and reduction integrated algorithm of shuffled frog leaping or quick fuzzy rough and reduction integrated algorithm based on importance, and finding an environmental factor set with the closest relationship with carbon flux; and 3), realizing modeling and stimulating for various environmental factors in the environmental factor set obtained from the step 2) by the aid of a neural network, and obtaining extraction rate of the environmental factors of the carbon flux. The extraction system comprises a data import module, a factor extraction module, an input module and an evaluation module. By the aid of the extraction method and the system, the range of correlation factors of the carbon flux in the researched ecosystem can be effectively reduced, research efficiency is improved, and inherent law among the environmental factors is found.

The invention discloses a technical method for dynamic monitoring of carbon storage in forest ecosystems. The steps are: firstly, obtain the forest ecosystem biomass according to the field survey data, and then calculate the forest ecosystem carbon storage from the forest ecosystem biomass; secondly, use the forest ecosystem carbon storage and remote sensing The relationship between the gray value of the image and the factors of the geographic information system, the carbon storage inversion model during the field survey period was established, and the carbon storage of the forest ecosystem during the field survey period was obtained from the inversion; finally, the image during the field survey period was used as a reference image , carry out relative atmospheric correction on regional historical remote sensing images and reference images, and use the carbon stock inversion model during the field survey period to calculate the carbon stock of the forest ecosystem in each historical period of the region, so as to achieve accurate , Rapid dynamic monitoring of forest ecosystem carbon storage.

The invention relates to a rapid method for improving carbon sequestration of soil in an arid desert area, which includes: according to soil temperature, soil properties and carbon sequestrating mechanism of the arid area, effectively using salsola collina, field weed, and directly and manually fixing surface organic carbon portions of salsola collina into the soil; and allowing plants of salsola collina to decompose to improve soil environment for growth of root systems of populus euphratica and quicken development of the root systems of populus euphratica, and accordingly increasing organic carbon in subsoil to compensate loss that severe decline of populus euphratica forest due to great decrease of underground water level of the arid desert area causes decrease of carbon sequestration of the ecological system.

The invention provides an in-situ monitoring soil freeze-thawing device and a method for testing the soil carbon loss on the basis of the device, and aims at solving the problems that the existing wild method can only be used for monitoring the carbon discharge flux of a whole soil ecological system and cannot be used for monitoring the contribution of a specific soil layer to the carbon discharge, and a soil freeze-thawing process cannot be really reflected by indoor freeze-thawing simulation experiments. The soil freeze-thawing device mainly comprises a temperature monitoring instrument, a soil column chamber, an air buffer chamber, a rubber sleeve and an air guide pipe. The method for testing the soil carbon loss comprises the following steps of charging in-situ soil columns of different soil layers into the soil column chamber of the freeze-thawing device; burying the soil columns into corresponding oil layers; in a freeze-thawing period, monitoring the discharge condition of gases CO2 and CH4, and comparing the soluble organic carbon DOC change condition of the corresponding soil layer before and after the freeze-thawing; further calculating the total carbon loss quantity of the freeze-thawing process. The in-situ monitoring soil freeze-thawing device and the method for testing the soil carbon loss have the advantages that the CO2 and CH4 discharge flux of different soil layers and the change angle of the DOC content in the freeze-thawing process are integrated to calculate the soil carbon loss degree; the precision is improved by 30 to 50 percent.

The invention discloses a method for obtaining net carbon budget of a regional scale forest ecological system, belonging to the technical field of the combination of related vorticity technology and remote sensing image processing. The invention provides the method for obtaining the net carbon budget of the regional scale forest ecological system, which aims at solving the problems that the related vorticity technology only represents the carbon budget condition of an ecological system at the periphery of an observing tower, but can not reflect the carbon budget condition of the forest ecological system in a large scale. The method comprises the steps of selecting different forest flux observing stations; obtaining and preprocessing the data of MODIS (Moderate Resolution Imaging Spectroradiometer); obtaining and processing data NEE of the flux observing stations; according to the types of the forest ecological systems, utilizing SPSS (Statistical Product and Service Solution) software to respectively record net carbon exchanging NEE data of representative stations and corresponding parameter relevance of EVI (Enhanced Vegetation Index), LSWI (Land Surface Water Index), LST (Land Surface Temperature) and LST'; generating a quantitative inverse model of the net carbon exchanging NEE of all types of forests; and testing and verifying the simulated results of the model so as to check the effectiveness. The method is used for obtaining the carbon budget condition of the forest ecological system in the large scale.

The invention discloses a method for measuring soil CO2 flux in a tidal flat wetland during early and later intertidal periods. The method comprises the following steps: selecting standard sample points in medium and high tide regions of a region to be measured, measuring six groups of CO2 concentration values required for building a model, and drawing a CO2 concentration-time chart; fitting by using an equilateral hyperbolic equation to obtain a regression equation, and calculating a first-order derivative of the equation to obtain the real-time CO2 flux at time periods; performing regression analysis on a relationship between the real-time flux and the real-time concentration by adopting a three-parameter Gauss equation to obtain a model of the soil CO2 flux of the region; quickly obtaining CO2 concentration data in the region to be measured by adopting a portable soil CO2 analyzer; and substituting the obtained real-time CO2 concentration into the obtained equation model to obtain the corresponding soil CO2 flux. The method is easy and liable to implement, can be used for accurately measuring the soil CO2 flux in the tidal flat wetland during the early and later intertidal periods, and can be applied to estimation of carbon sources/sink values of a coastal wetland ecosystem and evaluation of soil efficiency.

The invention provides a high-resolution land utilization and forest landscape process coupling simulation system and method, and relates to the technical field of geology and ecology. The system comprises a land utilization change module and a forest succession module. The land utilization change module is used for calculating land utilization pattern changes under different social, economic andnatural conditions in the future by utilizing a self-adaptive inertia competition mechanism on the basis of the neural network model; the forest succession module is a spatial intuitive landscape model for simulating forest succession on a large space-time scale. According to the invention, the influence of future climate change and land utilization change on the carbon reserve of the forest ecosystem in China can be evaluated more accurately. Compared with an existing ecosystem process model, the model needs fewer parameters and is more convenient to obtain, the operation efficiency is higher, and forest resource survey data can be directly used for parameterizing the model and verifying the simulation precision of the model.

The invention provides a soil respiration measurement method, a soil respiration measurement device and a soil respiration measurement system. The method comprises the steps of measuring respiration data of soil in different layers according to preset time intervals; extracting the respiration data of the soil in different layers measured in a specified time slot; and acquiring carbon dioxide flux in soil respiration of different soil layers within the appointed time slot according to the respiration data. According to the method, the soil respiration of different soil layers can be automatically measured, and a basis can be provided for more accurately assessing influence of human activities on a carbon cycle of an ecological system by measuring the soil respiration of different soil layers.

The invention relates to a trunk CO2 flux measurement device. The trunk CO2 flux measurement device comprises an infrared gas analyzer, a gas passage and a lifting frame used for arranging the infrared gas analyzer and the gas passage connected with the infrared gas analyzer, wherein the gas passage comprises a trunk contact cover, a carbon flux gas chamber contact cover and a steering tube used for connecting the trunk contact cover and the carbon flux gas chamber contact cover, the steering tube is arranged on the lifting frame through a fixing seat, the lifting frame comprises a desktop and desk legs located at the corners of the lower side of the desktop, each desk leg comprises a fixed segment and a telescopic segment located in the fixed segment, the fixed segment is connected with the telescopic segment through a locking device, a bearing platform is arranged between the desk legs, and a rail is arranged on the periphery of the bearing platform. According to the measurement device, the problem that a long-term test problem with high observation efficiency is difficult to carry out in a trunk breath process in the field for a long time is solved, the automation capability of plant trunk CO2 flux observation processes according to time scales such as day and night, seasonal variation and the like is greatly improved, manpower investment is lowered, and valuable data is provided for researches on trunk breath, carbon cycle of forest ecosystems, etc.

The invention discloses a coastal wetland ecosystem carbon reserve regulation management system based on data analysis, relates to the technical field of carbon reserve regulation management, solves the technical problem that in the prior art, a regulation mode cannot be reasonably and accurately obtained during carbon reserve regulation, and analyzes influence factors of a corresponding wetland region to obtain a regulation result. Whether influence factors exist in the current wetland region carbon reserves or not is judged, if yes, adjustment is carried out according to the influence factors, otherwise, adjustment is carried out according to unqualified signals, and the adjustment efficiency and accuracy of the wetland region can be improved; the adjusted wetland area is subjected to performance detection, and the qualification of carbon reserve adjustment is judged, so that the carbon balance performance of the wetland area is accurately analyzed, and the efficiency of carbon reserve adjustment is improved; and the carbon reserve of the wetland area can be accurately controlled.

The invention discloses a research method of the biomass distribution characteristics of an emblic leafflower fruit bushwood ecosystem, and relates to the technical field of the biomass distribution research of the ecosystem. The research method comprises the following specific research steps: (1) selecting a proper research area; (2) setting sample plots; (3) processing samples indoor; (4) carrying out data analysis and modeling; (5) obtaining a result, and carrying out analysis on (a) the biomass distribution characteristics of emblic leafflower fruits, (b) different growth parameter characteristics of the emblic leafflower fruits, (c) the biomass distribution characteristics of the emblic leafflower fruits of different branch diameters, (d) the biomass distribution characteristics of the emblic leafflower fruits of different plant heights and (e) the biomass distribution characteristics of the emblic leafflower fruits of different crown breadth areas; and (6) obtaining a conclusion. The research method is of great significance for the understanding of emblic leafflower fruit bushwood in the aspects of the fixation, the consumption, the distribution, the accumulation and the conversion of the substances and the energy of a terrestrial ecosystem and nutrition accumulation of the system and also has a great value in accurately estimating a terrestrial ecosystem carbon pool and carbon exchange.

The invention relates to an extension evaluation method, in particular to the field of carbon content quality evaluation methods for picea koraiensis based on the extension evaluation method, and discloses a carbon content quality evaluation method for picea koraiensis based on the extension evaluation method. The invention discloses an extension evaluation method-based spruce carbon content quality evaluation method. The method comprises the following steps of S1, constructing a spruce carbon content quality extension evaluation model according to the extension evaluation method; S2, establishing a quality evaluation standard of the carbon content of the picea koraiensis in the small khingan Mountain; S3, determining the objective weight of each organ of the picea koraiensis through a rough set and knowledge granularity weight determination method; S4, determining the carbon content quality grade of the picea koraiensis in each sample plot; and S5, determining the tending intermediatecutting strength most suitable for improving the carbon content quality of the picea koraiensis in the small Khingan Mountain. According to the method, an extension evaluation method is introduced into evaluation of the carbon content quality of the picea koraiensis under different tending intermediate cutting intensities, and the method has reference significance for improving the estimation precision of the carbon reserves of the forest ecosystem in the small khingan region.

The invention discloses a method for identifying the effect of water logging events on the carbon flux of crop soil units, which includes the following steps: setting water logging scenarios for soilunits at different growth stages of crops; measuring the CO2 concentration of the soil units at different time periods under different water logging scenarios in different growth stages of crops; calculating the CO2 flux of the crop soil units according to the measured CO2 concentration, and drawing a change trend curve of CO2 flux under different water logging scenarios in different growth stagesof crops and a change trend curve of CO2 flux under natural conditions; and comparatively analyzing the two curves to quantitatively identify the effect of water logging events on the carbon flux ofthe crop soil units. The method focuses on CO2 flux, including the emission and absorption process of the soil units. The carbon source/sink problem of the crop soil units can be judged, and thus, a scientific support is provided for the study of the carbon source/sink problem of the farmland ecosystem.

The invention provides a forestry carbon metering method based on an ecological process model, and relates to the technical field of forestry carbon metering. According to the forestry carbon metering method based on the ecological process model, forestry carbon sequestration analysis needs to be carried out in forestry carbon metering work, and the forestry carbon sequestration analysis comprises vegetation carbon content, soil carbon content, artificial planting forest carbon content, destroyed forest and degraded forest carbon content, animal and plant debris carbon content, garbage carbon content, planting fertilizer carbon content and the like. According to the method, a good ecological process model is established, an evaluation model with simple application is provided to grasp the overall trend, the land forestry ecosystem carbon cycle can be reasonably and efficiently estimated and predicted, in addition, when carbon measurement work is carried out, forestry carbon sequestration analysis is carried out, and targeted calculation data collection is carried out according to a carbon sequestration mode.

The invention discloses an ecological protection red line delimiting method for a carbon sequestration function of a terrestrial ecosystem, and the method comprises the steps: selecting a typical terrestrial ecosystem as an evaluation object in a land area range of a research area; collecting data of the evaluation object related to the carbon sequestration function; constructing a land ecosystem carbon sequestration function importance evaluation index from three dimensions of carbon reserve, carbon sink and carbon sequestration potential, determining an index grading assignment standard, and dividing the evaluation index into a plurality of grades; evaluating the importance of carbon reserves, carbon sequestration and carbon sequestration potential of the terrestrial ecosystem, and respectively extracting pattern spots with the highest importance levels of the three; performing spatial superposition and combination to generate extremely important pattern spots with a comprehensive carbon sequestration function; and carrying out aggregation and converting into a vector range of the ecological protection red line. According to the method, the problem that the protection red line of the carbon sequestration function of the terrestrial ecosystem cannot be accurately delimited can be solved, and scientific and technological support is provided for expanding ecological protection red line delimitation, positively coping with global climate changes and achieving a carbon neutralization target.

The invention relates to collection equipment forcycle detection of land ecosystem carbon in the field of land ecosystem biological monitoring. The equipment comprises a bottom cover, a hollow cone isarranged on the bottom cover, a fixed structure is arranged on the bottom cover, a middle cover is arranged on the bottom cover, the bottom cover and the middle cover are connected through a connecting structure, and the middle cover is provided with a top cover, a straight hole and a collection pipe through the connecting structure, a collecting pipe is arranged in the bottom cover, the collecting pipe is provided with a supporting ring and a transverse mounting frame, the supporting ring is provided with a filter screen, the transverse mounting frame is provided with a fan, the bottom coveris provided with the collecting pipe, the collecting pipe is provided with a supporting ring and a transverse mounting frame, the supporting ring is provided with a filter screen, the transverse mounting frame is provided with a fan, the collecting pipe is provided with a middle pipe, the middle pipe is provided with a conical air outlet pipe a chemical reagent layer, and a detection vessel, andthe top cover is provided with an adjusting structure. According to the collection equipment, the multiple sets of same middle covers are arranged at the top of the bottom cover, and the top covers are arranged on the middle covers, so that the height of the top covers is conveniently adjusted according to the height of plants, and the practicability of the device is improved.