Descriptions and plot quantities of four types of vegetation.

<p>Descriptions and plot quantities of four types of vegetation.</p

Litter and Oa layer organic carbon concentrations of four ecosystems in the karst area, southwestern China.

<p>F, FS, TS, SG are the abbreviations of the secondary forest, forest - shrub transition, thorn shrubbery, and rare shrub grassland, respectively. Error bars represent the standard errors. Different lowercase letters denote significant differences among three layers in F and FS stands.</p

CWD organic carbon concentrations of two ecosystems in the karst area, southwestern China.

<p>F and FS are the abbreviations of secondary forest and forest - shrub transition, respectively. Error bars represent the standard errors.</p

Wood and foliage organic carbon concentrations (mean ± standard error) of 15 plant species.

<p>Wood and foliage organic carbon concentrations (mean ± standard error) of 15 plant species.</p

Allometric regression equations for biomass in the karst area, southwestern China.

<p><i>W_L</i>, <i>W_W</i>, <i>DBH</i>, <i>BD</i>, <i>H</i> are biomass of leaf (kg), biomass of woody material (kg), diameter at breast height (cm), basal diameter (cm) and height (m), respectively.</p

PREPARATIVE SEPARATION OF ISOQUINOLINE ALKALOIDS FROM PHELLODENDRI CORTEX BY PH-ZONE-REFINING COUNTER-CURRENT CHROMATOGRAPHY

<div><p>pH-Zone-refining counter-current chromatography (PZRCCC) was successfully used for preparative separation isoquinoline alkaloids from Phellodendri Cortex. Two target compounds of berberine and palmatine were completely resolved by a two-phase solvent system chloroform/methanol/water (4:2:2, v/v), with 10 mmol L-1 HCl in upper stationary phase and 10 mmol L-1 TEA in lower organic phase. From 2.0 g of the crude alkaloids, palmatine (448 mg, 95.1%) and berberine (159 mg, 95.4%) were obtained in one-step PZRCCC separation. The chemical structures were identified by ESI-MS and NMR data. The results indicated that PZRCCC separation is an excellent preparative separation method for isoquinoline alkaloids from Phellodendri Cortex.</p></div

For the given NDVI classification of 0.3

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

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

Main datasets sources.

<p>Main datasets sources.</p