搜索结果: 1-15 共查到“Cropland”相关记录20条 . 查询时间(0.09 秒)
Cropland displacement contributed 60% of the increase in carbon emissions of grain transport in China over 1990–2015
Cropland displacement carbon emissions grain transport China
2024/4/1
Rapid urbanization and population growth have increased the need for grain transportation in China, as more grain is being consumed and croplands have been moved away from cities. Increased grain tran...
Soil Organic Nitrogen Components and N?Cycling Enzyme Activities Following Vegetation Restoration of Cropland in Danxia Degraded Region
reforestation succession forest vegetation pine plantations karst
2023/11/22
This study outlines research performed on experimental plots established in forest plantations and in natural black pine forests. The objective of the study was to determine the habitat factors that h...
Cropland Expansion Mitigates the Supply and Demand Deficit for Carbon Sequestration Service under Different Scenarios in the Future-The Case of Xinjiang
carbon sequestration different scenarios land use sustainable development Xinjiang
2023/11/20
China's double carbon initiative faces huge challenges, and understanding the carbon sequestration service of terrestrial ecosystems under future interannual regional land use change is important to r...
南京农业大学农学院《Science of The Total Environment》发表智慧农业团队“Improving the spatial and temporal estimation of ecosystem respiration using multi-source data and machine learning methods in a rainfed winter wheat cropland”（图）
智慧农业 碳循环 生态系统
2023/10/28
2023年2月25日，农学院智慧农业团队在《Science of The Total Environment》期刊发表了题为“Improving the spatial and temporal estimation of ecosystem respiration using multi-source data and machine learning methods in a rainfed ...
A COMPARATIVE ANALYSIS OF FIVE CROPLAND DATASETS IN AFRICA
Africa Land cover Cropland area Spatial location Accuracy
2018/5/15
The food security, particularly in Africa, is a challenge to be resolved. The cropland area and spatial distribution obtained from remote sensing imagery are vital information. In this paper, accordin...
ESTIMATING GROSS PRIMARY PRODUCTION IN CROPLAND WITH HIGH SPATIAL AND TEMPORAL SCALE REMOTE SENSING DATA
Cropland GOES-13 geostationary Gross Primary Production Landsat NDV MODIS NDVI/EVI product carbon cycle Photosynthesis active radiation (PAR)
2018/5/15
Satellite remote sensing data provide spatially continuous and temporally repetitive observations of land surfaces, and they have become increasingly important for monitoring large region of vegetatio...
VARIATIONS IN CROPLAND PHENOLOGY IN CHINA FROM 1983 TO 2002
Cropland phenology Starting date of growing season (SGS) NDVI Variation China
2016/1/3
In this study, we used the NDVI time-series datasets to investigate variations in the starting dates of growing season (SGS) in China's cropland from 1983 to 2002. To do so, a smoothing algorithm base...
Enhancing the Automatic Verification of Cropland in IKONOS Imagery
Segmentation Grouping Image Understanding Feature Extraction
2015/12/16
Segmentation is one of the first steps in the field of image analyzing and image understanding. It is the basis for the interpretation of images, or it supports other techniques which is the motivatio...
New methods and satellites: A program update on the NASS cropland data layer and acreage program
AWiFS Landsat See5
2015/9/6
The United States Department of Agriculture (USDA), National Agricultural Statistics Service (NASS) annually produces crop
specific classifications and acreage estimates over the major growing region...
COST AND BENEFIT ANALYSIS OF A CROPLAND DATA LAYER
Agricultural statistics service farmland data geographic information system the monitoring of the basin agricultural planning prairie pothole water monitoring crop and animal habitats
2015/5/13
In the last several years, the National Agricultural Statistics Service (NASS) has developed a Cropland Data
Layer (CDL) in geographic information system (GIS) format (See Figure 1) for public use. ...
Seasonal and interannual variations in carbon dioxide exchange over a cropland in the North China Plain
carbon sequestration, ecosystem respiration eddy covariance gross primary production net ecosystem exchange summer maize winter wheat
2013/7/25
In China, croplands account for a relatively large form of vegetation cover. Quantifying carbondioxide exchange and understanding the environmental controls on carbon fluxes overcroplands are cr...
Seasonal variations in soil respiration, heterotrophic respiration and autotrophic respiration of a wheat and maize rotation cropland in the North China Plain
Heterotrophic respiration Maize North China Plain Soil respiration Wheat
2013/7/25
Determining soil respiration from croplands is necessary for evaluating the global terrestrial carbon budget and how it is altered in future climates. This study explored seasonal characteristics and ...
MULTITEMPORAL QUALITY ASSESSMENT OF GRASSLAND AND CROPLAND OBJECTS OF A TOPOGRAPHIC DATASET
Automation Quality Inspection Updating GIS Crop Multitemporal Classification
2014/4/28
As a consequence of the wide-spread application of digital geo-data in geographic information systems (GIS), quality control has
become increasingly important to enhance the usefulness of the data. ...
Comparing the impact of cloudiness on carbon dioxide exchange in a grassland and a maize cropland in northwestern China
Clearness index Diffuse radiation NEE Photosynthetically active radiation (PAR)
2013/9/2
Light quantity and quality strongly influence plant growth. However, different ecosystems have different capabilities to assimilate solar radiation. In this study, the effects of cloudiness intensity ...
POTENTIAL EVALUATION OF DIFFERENT TYPES OF IMAGES AND THEIR COMBINATION FOR THE CLASSIFICATION OF GIS OBJECTS CROPLAND AND GRASSLAND
Agriculture Classification Multitemporal Aeria Satellite
2014/6/5
In many publications the performance of different classification algorithms regarding to agricultural classes is evaluated.
In contrast, this paper focuses on the potential of different imagery for ...