1. Observation time
On days of 24 July, 27 July, 30 July, 31 July and 1 August, 2014
2. Samples and observation methods
Large areas with homogeneous vegetation (greater than 100 m * 100 m) were chosen as the observation samples. And forty field samples were selected according to the characteristics of vegetation distribution in the downstream. The land-use types including the cantaloupe, the Tamarix chinensis, the reeds, the weeds, the Karelinia caspica, the Sophora alopecuroides and so on.
LAI data were calculated according to the transmittance derived from an A value (above-canopy readings) and four B values (below readings). More than two LAI values were obtained for each sample. At the same time, the heights of the vegetation in each sample were measured.
3. Observation instrument
4. Data storage
The observation recorded data were stored in excel and the original LAI data were stored in txt files.
Geng Liying, Ma Mingguo, Song Yi, Liang Ji, Li Yimeng, Zhou Shengnan. HiWATER: Dataset of Leaf Area Index by LAI2200 in the lower reaches of the Heihe River Basin. Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences. 2015. 10.3972/hiwater.268.2015.db (Download: RIS | Bibtex)
The dataset is generated from the "Heihe Watershed Allied Telemetry Experimental Research (HiWATER)". User must have a clear statement in the article of the original data source and cite the dataset and papers in the Citation section.