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Change Trend and Restoration Potential of Vegetation Net Primary Productivity in China over the Past 20 Years

Guobo Liu, Quanqin Shao, Jiangwen Fan, Jia Ning, Kai Rong, Haibo Huang, Shuchao Liu, Xiongyi Zhang, Linan Niu, Jiyuan Liu
2022 Remote Sensing  
However, the change trend of NPP and its recovery potential in China over the past 20 years remain unclear.  ...  The results showed that (1) the change in vegetation NPP in China from 2000 to 2019 showed a continuous upward trend, with a change slope of 2.39 gC/m2/a2, and the area with a positive slope of change  ...  It has sup rior performance in the trend analysis of time series.  ... 
doi:10.3390/rs14071634 fatcat:hu2pnm4ngjfjzbk6maru6dnjcu

Spatial-Temporal NDVI Variation of Different Alpine Grassland Classes and Groups in Northern Tibet from 2000 to 2013

Xiaoke Zhang, Xuyang Lu, Xiaodan Wang
2015 Mountain Research and Development  
Mean growing season images were derived by averaging the monthly NDVI images covering May to September each year for a time-series analysis.  ...  Data A NDVI time series of satellite images at 250-m spatial and 16-day temporal resolution, covering a period from 2000 to 2013 and produced by MODIS NDVI, were acquired from http://ladsweb.nascom.nasa.gov  ... 
doi:10.1659/mrd-journal-d-14-00110.1 fatcat:ohwf6xgstrblri3u2g5mwnud7i

Comparison of the Spatial Characteristics of Four Remotely Sensed Leaf Area Index Products over China: Direct Validation and Relative Uncertainties

Xinlu Li, Hui Lu, Le Yu, Kun Yang
2018 Remote Sensing  
Compared with MODIS LAI, GLOBALBNU LAI is the most similar, followed by GLASS LAI and GLOBMAP. Large differences mainly occur in southern regions of China.  ...  Chinese Academy of Sciences (GLOBMAP), and Moderate-resolution Imaging Spectrometer (MODIS) LAI, while the former three products are newly developed by three Chinese research groups on the basis of the  ...  Conflicts of Interest: The authors declare no conflict of interest.  ... 
doi:10.3390/rs10010148 fatcat:wuaqmavkbjc75oewrwld4l3ik4

Dynamic Disturbance Analysis of Grasslands Using Neural Networks and Spatiotemporal Indices Fusion on the Qinghai-Tibet Plateau

Fengli Zou, Qingwu Hu, Haidong Li, Jie Lin, Yichuan Liu, Fulin Sun
2022 Frontiers in Plant Science  
Among them, the type of degradation after disturbance mainly occurs in Tibet, whereas the main types of vegetation greenness increase in Qinghai and Gansu.  ...  changes in highland-type grasslands.  ...  and long time series and further explored the application of remote sensing image in the monitoring of alpine grassland ecosystem change.  ... 
doi:10.3389/fpls.2021.760551 pmid:35111172 pmcid:PMC8801810 fatcat:5xsaqxhaingsdesovh5zs7dgxe

Effects of precipitation and temperature on precipitation use efficiency of alpine grassland in Northern Tibet, China

Xiaoke Zhang, Xindong Du, Zhangming Zhu
2020 Scientific Reports  
temporal patterns of alpine grassland PUE in Northern Tibet.  ...  In this study, we used a time series (2000–2013) dataset of net primary productivity (NPP) based on the Carnegie–Ames–Stanford Approach (CASA) model together with precipitation to reveal the spatial and  ...  In this study, we used the MODIS NDVI time series of satellite images at 250 km spatial and 16-day temporal resolution, covering a period from 2000 to 2013.  ... 
doi:10.1038/s41598-020-77208-6 pmid:33219286 pmcid:PMC7679412 fatcat:u53tky5ul5gytkvez6r72rgytu

An empirical algorithm for retrieving land surface temperature from AMSR‐E data considering the comprehensive effects of environmental variables

Quan Zhang, Jie Cheng
2020 Earth and Space Science  
constructed.  Accuracy of the AMSR-E LST in China retrieved from the proposed algorithm has been obviously improved compared to the previous algorithms.  ...   Topographic effect is considered for the first time in the microwave land surface temperature retrieval.  A classification system involving various factors on land surface temperature distribution is  ...  The upper clusters of points in each plot are the time series of the LST in the daytime, while the lower ones are the time series of the LST at nighttime.  ... 
doi:10.1029/2019ea001006 fatcat:hxs7ofn3dfeqvo6fa7eah7hfze

A River Basin over the Course of Time: Multi-Temporal Analyses of Land Surface Dynamics in the Yellow River Basin (China) Based on Medium Resolution Remote Sensing Data

Christian Wohlfart, Gaohuan Liu, Chong Huang, Claudia Kuenzer
2016 Remote Sensing  
In this study, we derived land cover characteristics and dynamics from the complete last decade based on optical high-temporal MODIS Normalized Differenced Vegetation Index (NDVI) time series for the whole  ...  After filtering and smoothing for noise reduction with the use of the adaptive Savitzky-Golay filter, the processed time series was used to derive a large variety of phenological and annual metrics.  ...  and Research, BMBF (Federal Ministry of Education and Research), and by the International Science and Technology Cooperation Program of China, 2012DFG22050.  ... 
doi:10.3390/rs8030186 fatcat:cld7be3imrcvnlrwbm3c7kmx5u

Distribution and Variation of Forests in China from 2001 to 2011: A Study Based on Remotely Sensed Data

Xiang Zhao, Peipei Xu, Tao Zhou, Qing Li, Donghai Wu
2013 Forests  
series data with the first layer of MODIS Land Cover Type product (MODIS LC-1).  ...  This study presents the results of forests distribution and variation information over China using Moderate Resolution Imaging Spectroradiometer (MODIS) Normalized Difference Vegetation Index (NDVI) time  ...  Acknowledgments This research was supported by National Basic Research Program of China (2012CB955401) and the project of State Key Laboratory of Earth Surface Processes and Resource Ecology (2011-KF-08  ... 
doi:10.3390/f4030632 fatcat:datw2noc6jd5pnbfdp76tlj6wy

Quantitative Assessment of the Impact of Physical and Anthropogenic Factors on Vegetation Spatial-Temporal Variation in Northern Tibet

Qinwei Ran, Yanbin Hao, Anquan Xia, Wenjun Liu, Ronghai Hu, Xiaoyong Cui, Kai Xue, Xiaoning Song, Cong Xu, Boyang Ding, Yanfen Wang
2019 Remote Sensing  
Both environmental changes and irrational use of the grassland can result in severe grassland degradation in some areas of the Qinghai-Tibet Plateau.  ...  The alpine grassland on the Qinghai-Tibet Plateau covers an area of about 1/3 of China's total grassland area and plays a crucial role in regulating grassland ecological functions.  ...  Acknowledgments: We thank Yu Hua for her language assistance during the preparation of this manuscript. Great thanks for the help of Inner Mongolia Grassland Ecosystem Research Station, CAS.  ... 
doi:10.3390/rs11101183 fatcat:3syp7plsabet7eqbsdo4mvz7ha

Change of surface cover greenness in China between 2000 and 2010

Shuang Liu, Peng Gong
2012 Chinese Science Bulletin  
This study collected MODIS Normalized Difference Vegetation Index (NDVI) data from 2000 to 2010 and analyzed their change over China in this period.  ...  Therefore, vegetation index can be used to study the change in greenness of desert areas.  ...  (a) Shanxi, Shaanxi, Qinghai, Gansu; (b) eastern Inner Mongolia; (c) Tibet; (d) Jiangsu. Figure 4 4 Image of greenness classification series 2000-2010.  ... 
doi:10.1007/s11434-012-5267-z fatcat:fy2zi3qyjnhivmc3pvmkmbpb2e

A Circa 2010 Thirty Meter Resolution Forest Map for China

Congcong Li, Jie Wang, Luanyun Hu, Le Yu, Nicholas Clinton, Huabing Huang, Jun Yang, Peng Gong
2014 Remote Sensing  
This study examines the suitability of 30 m Landsat Thematic Mapper (TM), 250 m time-series Moderate Resolution Imaging Spectrometer (MODIS) Enhanced Vegetation Index (EVI) and other auxiliary datasets  ...  It is close to the forest area of 7th National Forest Resource Inventory with the same definition of forest. The overall accuracy for the more detailed forest type classification is 72.7%.  ...  Acknowledgments This work was partially supported by the National High Technology Research and Development Program of China (2013AA122804), and a research grant from Tsinghua University (2012Z02287).  ... 
doi:10.3390/rs6065325 fatcat:ffisyi6q5vcqrilngwudsuomca

Remote Sensing Estimation and Spatiotemporal Pattern Analysis of Terrestrial Net Ecosystem Productivity in China

Liang Liang, Di Geng, Juan Yan, Siyi Qiu, Yanyan Shi, Shuguo Wang, Lijuan Wang, Lianpeng Zhang, Jianrong Kang
2022 Remote Sensing  
Furthermore, from 2001 to 2016, most regions of China showed a non-significant level upward trend, but main cropland (e.g., North China Plain and Northeast Plain) and some grassland (e.g., Ngari in Qinghai–Tibet  ...  In this paper, the key parameters of the Carnegie Ames Stanford Approach (CASA) model, maximum light use efficiency (εmax), was optimized by using vegetation classification data.  ...  China (http://gre.geodata.cn)".  ... 
doi:10.3390/rs14081902 fatcat:nnymjequy5e6dlteoa6pyn4eia

Evaluation of the 2010 MODIS Collection 5.1 Land Cover Type Product over China

Tian Zeng, Zengxiang Zhang, Xiaoli Zhao, Xiao Wang, Lijun Zuo
2015 Remote Sensing  
on two grid maps at scales of 100-m and 500-m,which were derived by rasterizing the 2010 data from the national land use/cover database of China (NLUD-C).  ...  the land cover data over China, due to the large amount of misclassification between the pure pixels of grassland and barren lands.  ...  Acknowledgments The authors would like to thank all the scientists who have participated in the establishment of the 2010 data of NLUD-C, and they include all scientists and students in the Renewable  ... 
doi:10.3390/rs70201981 fatcat:w2rlgi4b5jh5pi76v3mgkz5jmy

Spatially differentiated trends in urbanization, agricultural land abandonment and reclamation, and woodland recovery in Northern China

Chao Wang, Qiong Gao, Xian Wang, Mei Yu
2016 Scientific Reports  
Furthermore, significant land change hotspots were detected by means of linear regression to fit slopes of land cover time series at the municipality scale 21 .  ...  Based on classification of annual LCLU maps from MODIS satellite imagery, we proposed a land change detection method to capture significant land change hotspots over Northern China during 2001-2013, and  ...  Acknowledgements This work was supported by the starting fund from University of Puerto Rico, Rio Piedras.  ... 
doi:10.1038/srep37658 pmid:27874092 pmcid:PMC5118683 fatcat:6ol24t44njhihgnwt5zyvvztga

Vegetation greenness trend (2000 to 2009) and the climate controls in the Qinghai-Tibetan Plateau

Li Zhang, Huadong Guo, Lei Ji, Liping Lei, Cuizhen Wang, Dongmei Yan, Bin Li, Jing Li
2013 Journal of Applied Remote Sensing  
We detected the greenness trend of the grasslands in the plateau using Moderate Resolution Imaging Spectroradiometer data from 2000 to 2009.  ...  Although a warming climate was expected to be beneficial to the vegetation growth in cold regions, the grasslands in the central and southwestern plateau showed a decrease in trends influenced by increased  ...  We calculated the regression slope and the p-value for each pixel from the NDVI time series images.  ... 
doi:10.1117/1.jrs.7.073572 fatcat:kuxxvahllveffgoujpgj2rwhyi
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