For the given NDVI classification of 0.3

<p>For the given NDVI classification of 0.3</p

Marking standard of the indices for assessing rocky desertification severity.

<p>Marking standard of the indices for assessing rocky desertification severity.</p

Relationship between evapotranspiration efficiency (ETa/ETp) and humidity (P/ETp) for different NDVI classifications: (a) NDVI≤0.1; (b) 0.3

<p>Relationship between evapotranspiration efficiency (ETa/ETp) and humidity (P/ETp) for different NDVI classifications: (a) NDVI≤0.1; (b) 0.3</p

Annual variation of (a) NDVI in July, (b) actual evapotranspiration (ETa), and (c) average precipitation (P) in different severity categories of rocky desertification areas from 2000–2013.

<p>Annual variation of (a) NDVI in July, (b) actual evapotranspiration (ETa), and (c) average precipitation (P) in different severity categories of rocky desertification areas from 2000–2013.</p

Parameters (PAE and N) of the revised Bagrov modeling of ETa values in rocky desertification areas.

<p>Parameters (PAE and N) of the revised Bagrov modeling of ETa values in rocky desertification areas.</p

Main datasets sources.

<p>Main datasets sources.</p

The spatial distribution of the mean annual precipitation in the rocky desertification areas in South China from 2000~2013.

<p>The spatial distribution of the mean annual precipitation in the rocky desertification areas in South China from 2000~2013.</p

Classification of NDVI and precipitation amounts in our study.

<p>Classification of NDVI and precipitation amounts in our study.</p

ETa values responses to increasing NDVI for different severity categories of rocky desertification.

<p>(<b>a</b>) changes in ETa values with NDVI increasing of 0.1 from 2000–2013; (<b>b</b>) average annual ETa values with NDVI increasing of 0.025, 0.05, 0.075, and 0.1; and (<b>c</b>) changes in average annual ETa values with NDVI increasing of 0.025, 0.05, 0.075, and 0.1.</p

The (a) actual evapotranspiration (ETa), (b) evapotranspiration efficiency (ETa/ETp) and (c) potential humidity (P/ETp) responses to the NDVI and precipitation changes.

<p>The (a) actual evapotranspiration (ETa), (b) evapotranspiration efficiency (ETa/ETp) and (c) potential humidity (P/ETp) responses to the NDVI and precipitation changes.</p