000161951 001__ 161951
000161951 005__ 20180122231142.0
000161951 037__ $$a1812-2016-144039
000161951 037__ $$a1812-2016-146775
000161951 041__ $$aen_US
000161951 245__ $$aEstimation of Remote Sensing and Analysis of Temporal and Spatial Distribution of Grassland LAI
000161951 260__ $$c2013-11
000161951 269__ $$a2013-11
000161951 300__ $$a5
000161951 336__ $$aJournal Article
000161951 520__ $$aTo estimate the leaf area index (LAI) in large areas, this paper analyzes the relationships between normalized difference vegetation index (NDVI) and the grassland LAI based on MODIS data in the southern grassy mountains and slopes of China. By using nonlinear fitting equation we constructed the basic estimation model of grassland LAI with NDVI as the independent variable and introduced precipitation and temperature as regulatory factors. The model was validated with observed data in different years and the results showed that there was a good correlation between the simulated and observed LAI value with a statistically significant level of R2. RMSE was 0.302 and RRMSE was 0.154. It was also found that the spatial distribution of grassland LAI in south China showed a remarkable zonal characterization, and temporal distribution showed a single peak curve. These results provided a theoretical basis for the effective management of southern grassland resources and the carbon sink estimation of the nationwide grasslands.
000161951 542__ $$fLicense granted by SHANGJUN ZHANG (asiaar@163.com) on 2013-12-26T03:05:39Z (GMT):

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000161951 650__ $$aAgribusiness
000161951 6531_ $$aEstimation model
000161951 6531_ $$aGrassland LAI
000161951 6531_ $$aMODIS
000161951 6531_ $$aNDVI
000161951 6531_ $$aTemporal and spatial characteristics
000161951 700__ $$aSun, Chengming
000161951 700__ $$aLiu, Tao
000161951 700__ $$aGuo, Doudou
000161951 700__ $$aTian, Ting
000161951 700__ $$aWang, Lijian
000161951 700__ $$aChen, Yingying
000161951 700__ $$aLi, Jianlong
000161951 773__ $$d2013$$jVolume 05$$kIssue 11$$o92$$q88$$tAsian Agricultural Research
000161951 8564_ $$s1288597$$uhttp://ageconsearch.umn.edu/record/161951/files/21.PDF
000161951 887__ $$ahttp://purl.umn.edu/161951
000161951 909CO $$ooai:ageconsearch.umn.edu:161951$$pGLOBAL_SET
000161951 912__ $$nSubmitted by SHANGJUN ZHANG (asiaar@163.com) on 2013-12-26T03:08:53Z
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  Previous issue date: 2013-11
000161951 982__ $$gAsian Agricultural Research>Volume 05, Issue 11, November 2013
000161951 980__ $$a1812