DOI: 10.5061/dryad.98sf7m0xc
title: Edaphic effects on forest structure and tree species composition in three seasonally dry tropical forest types in Cambodia

description: There are datasets of tree census and soil conditions from three adjacent
 1-ha plots in deciduous, semi-evergreen, and evergreen forests in
 seasonally dry tropical forests (SDTFs). Using these datasets, we
 evaluated edaphic effects on forest structure and tree species composition
 in Cambodia’s unique lowland forest landscape, where different forest
 types coexist under similar climatic conditions. Soil nutrients and water
 content were measured at 0–200-cm depth in both the rainy and dry seasons,
 alongside soil texture.
description: # Edaphic effects on forest structure and tree species composition in
 three seasonally dry tropical forest types in Cambodia This is the dataset
 of tree census and soils obtained in deciduous, semi-evergreen, and
 evergreen forests in Khun Ream, Siem Reap, Cambodia, in 2021. In each
 forest type, 1-ha plot (100m × 100m) was established, and trees with more
 than 5-cm in DBH were numbered and measured. Soils were sampled in each
 plot during both the rainy (October 2022) and dry (February 2023) seasons.
 Samples were collected every 20 cm from 0 to 200 cm, including a 10-cm
 depth (11 samples per point), at 8 points per plot. ## Description of the
 data and file structure File: ResourceDataRev2JournalUpload.xlsx Tree
 census dataset in each forest type includes the following data. * Subplot
 (10m × 10m): each plot is divided into 100 subplots. * Block: each plot
 has 8 blocks and the area of each block is 800 m^2^. Some subplots are not
 included in any blocks. * TreeID: TreeID of each stem * DBH in 2021 (cm):
 diameter at breast height (DBH) that was measured in October 2021. *
 Family: family name * Species: species name * Soil dataset includes the
 following data. * Forest_Type: forest type including deciduous,
 semi-evergreen, and evergreen forests. * Point: soil sampling point which
 was located at the center of each block. * RN_S: nitrogen content in
 surface (0‒40 cm) layer in the rainy season (%). * RN_M: nitrogen content
 in middle (40‒100 cm) layer in the rainy  season (%). * RN_D: nitrogen
 content in deep (100‒200 cm) layer in the rainy  season (%). * DN_S:
 nitrogen content in surface (0‒40 cm) layer in the dry season (%). * DN_M:
 nitrogen content in middle (40‒100 cm) layer in the dry  season (%). *
 DN_D: nitrogen content in middle (40‒100 cm) layer in the dry  season (%).
 * RP_S: available phosphorous content in surface (0‒40 cm) layer in the
 rainy season (mg 100 g^‒1^). * RP_M: available phosphorous content in
 middle (40‒100 cm) layer in the rainy season (mg 100 g^‒1^). * RP_D:
 available phosphorous content in deep (100‒200 cm) layer in the rainy
 season (mg 100 g^‒1^). * DP_S: available phosphorous content in surface
 (0‒40 cm) layer in the dry season (mg 100 g^‒1^). * DP_M: available
 phosphorous content in middle (40‒100 cm) layer in the dry season (mg 100
 g^‒1^). * DP_D: available phosphorous content in deep (100‒200 cm) layer
 in the dry season (mg 100 g ^-1^). * RW_S: water content in surface (0‒40
 cm) layer in the rainy season (g g ^-1^). * RW_M: water content in middle
 (40‒100 cm) layer in the rainy season (g g ^-1^). * RW_D: water content in
 deep (100‒200 cm) layer in the rainy season (g g ^-1^). * DW_S: water
 content in surface (0‒40 cm) layer in the dry season (g g ^-1^). * DW_M:
 water content in middle (40‒100 cm) layer in the dry season (g g ^-1^). *
 DW_D: water content in deep (100‒200 cm) layer in the dry season (g g
 ^-1^). * Clay_S: clay content in surface (0‒40 cm) layer (%). * Clay_M:
 clay content in middle (40‒100 cm) layer (%). * Clay_D: clay content in
 deep (100‒200 cm) layer (%). * Sand_S: sand content in surface (0‒40 cm)
 layer (%). * Sand_M: sand content in middle (40‒100 cm) layer (%). *
 Sand_D: sand content in deep (100‒200 cm) layer (%). NA: data is not
 available.