How do non‐halophyte locust trees thrive in temperate coastal regions: A study of salinity and multiple environmental factors on water uptake patterns DOI
Han Li,

Zhiqing Lan,

Han Chen

et al.

Hydrological Processes, Journal Year: 2024, Volume and Issue: 38(3)

Published: March 1, 2024

Abstract Understanding plant water use patterns is crucial for comprehending the dynamics of soil–plant‐atmosphere continuum and evaluating adaptability plants across diverse ecosystems. However, there remains a gap in our comprehension non‐halophyte plants' uptake driving factors temperate coastal regions. For this reason, we used locust trees (a widely planted tree species northern China) as study subject. We collected isotope data (δ 2 H δ 18 O) xylem soil over two consecutive growing seasons. The MixSIAR model was along with five distinct sets input (single isotopes, uncorrected dual corrected isotopes incorporating obtained by line or cryogenic vacuum distillation methods) to infer utilization patterns. results indicated that primarily absorb shallow (0–20 cm, 29.4% ± 16.9%) deep (120–180 24.7% 5.8%). Pearson's correlation analysis revealed key behind were vegetation transpiration salinity. Remarkably, build up salts lower layer (60–120 cm) hinders absorption plants. To prevent high salt concentrations from affecting plants, recommend implementing sufficient irrigation March April each year meet needs growth regulate accumulation various layers. This reveals dynamic strategy regions, offering valuable information resources management.

Language: Английский

Assessing the Impacts of Climate and Land Use Change on Water Conservation in the Three-River Headstreams Region of China Based on the Integration of the InVEST Model and Machine Learning DOI Creative Commons

Xinyue Xie,

Min Peng, Linglei Zhang

et al.

Land, Journal Year: 2024, Volume and Issue: 13(3), P. 352 - 352

Published: March 8, 2024

The Three-River Headstreams Region (TRHR) serves as the cradle of China’s three major rivers—the Yangtze, Yellow, and Lancang—rendering its water conservation (WC) capacity quintessentially significant for Asian resource security. This study integrated InVEST model random forest to holistically elucidate spatiotemporal characteristics factors influencing WC in TRHR from 1980 2018. results revealed that growth rate was 5.65 mm/10a during period, yet pronounced regional disparities were observed among different basins, especially with Lancang River Basin (LRB), which exhibited a decrease at 5.08 mm per decade despite having highest WC. Through Theil–Sen trend analysis, Mann–Kendall abrupt change test, cumulative deviation method, meteorological, vegetative, land use changes approximately 2000 identified primary drivers surge within TRHR. Furthermore, precipitation aridity index core feature variables affecting However, positive transition patterns post-2000 also revealed, favorable effect on not climatic changes. offers new perspectives managing multidimensional data contributes laying groundwork machine learning applications conservation. Additionally, it potentially provides useful references decision-making processes related ecosystem

Language: Английский

Citations

3
Comparison of carbon and water fluxes and the drivers of ecosystem water use efficiency in a temperate rainforest and a peatland in southern South America DOI Creative Commons
Jorge F. Pérez‐Quezada, David Trejo, Javier Lopatin

et al.

Biogeosciences, Journal Year: 2024, Volume and Issue: 21(5), P. 1371 - 1389

Published: March 18, 2024

Abstract. The variability and drivers of carbon water fluxes their relationship to ecosystem use efficiency (WUE) in natural ecosystems southern South America are still poorly understood. For 8 years (2015–2022), we measured dioxide net exchange (NEE) evapotranspiration (ET) using eddy covariance towers a temperate rainforest peatland Chile. NEE was partitioned into gross primary productivity (GPP) respiration (Reco), while ET evaporation (E) transpiration (T) used estimate different expressions WUE. We then the correlation between detrended time series structural equation modelling identify main environmental WUE, GPP, ET, E T. results showed that forest consistent sink (−486 ± 23 g C m−2 yr−1), was, on average, small source (33 21 yr−1). WUE is low both likely explained by high annual precipitation this region (∼ 2100 mm). Only included atmospheric demand seasonal variation. Variations were related more changes than T remained relatively stable, accounting for around 47 % most study period. ecosystems, increased with higher global radiation surface conductance when table closer surface. Higher values also found wind speeds air temperatures peatland. absence close GPP dominance plant species either do not have stomata (i.e. mosses or epiphytes forest) poor stomatal control anisohydric tree forest). observed increase potential last 2 decades projected drought suggests could these particularly forest, where may be significant.

Language: Английский

Citations

3
Vegetation factors and atmospheric dryness regulate the dynamics of ecosystem water use efficiency in a temperate semiarid shrubland DOI
Yanmei Mu, Xin Jia, Zi-Qi Ye

et al.

Journal of Hydrology, Journal Year: 2024, Volume and Issue: 639, P. 131644 - 131644

Published: July 4, 2024

Language: Английский

Citations

3
Machine learning-based investigation of forest evapotranspiration, net ecosystem productivity, water use efficiency and their climate controls at meteorological station level DOI
Haiyang Shi, Yu Zhang, Geping Luo

et al.

Journal of Hydrology, Journal Year: 2024, Volume and Issue: 641, P. 131811 - 131811

Published: Aug. 10, 2024

Language: Английский

Citations

3
How do non‐halophyte locust trees thrive in temperate coastal regions: A study of salinity and multiple environmental factors on water uptake patterns DOI
Han Li,

Zhiqing Lan,

Han Chen

et al.

Hydrological Processes, Journal Year: 2024, Volume and Issue: 38(3)

Published: March 1, 2024

Abstract Understanding plant water use patterns is crucial for comprehending the dynamics of soil–plant‐atmosphere continuum and evaluating adaptability plants across diverse ecosystems. However, there remains a gap in our comprehension non‐halophyte plants' uptake driving factors temperate coastal regions. For this reason, we used locust trees (a widely planted tree species northern China) as study subject. We collected isotope data (δ 2 H δ 18 O) xylem soil over two consecutive growing seasons. The MixSIAR model was along with five distinct sets input (single isotopes, uncorrected dual corrected isotopes incorporating obtained by line or cryogenic vacuum distillation methods) to infer utilization patterns. results indicated that primarily absorb shallow (0–20 cm, 29.4% ± 16.9%) deep (120–180 24.7% 5.8%). Pearson's correlation analysis revealed key behind were vegetation transpiration salinity. Remarkably, build up salts lower layer (60–120 cm) hinders absorption plants. To prevent high salt concentrations from affecting plants, recommend implementing sufficient irrigation March April each year meet needs growth regulate accumulation various layers. This reveals dynamic strategy regions, offering valuable information resources management.

Language: Английский

Citations

2