Alamgir Khan

ORCID: 0000-0001-8469-0405
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About
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Research Areas
  • Plant Water Relations and Carbon Dynamics
  • Tree-ring climate responses
  • Forest ecology and management
  • Ecology and Vegetation Dynamics Studies
  • Photosynthetic Processes and Mechanisms
  • Plant and animal studies
  • Agronomic Practices and Intercropping Systems
  • Irrigation Practices and Water Management
  • Agricultural Science and Fertilization
  • Fire effects on ecosystems
  • Rangeland Management and Livestock Ecology
  • Plant nutrient uptake and metabolism
  • Heavy metals in environment
  • Remote Sensing and LiDAR Applications
  • Rangeland and Wildlife Management
  • Hydrology and Sediment Transport Processes
  • Soil and Unsaturated Flow
  • Hydrology and Drought Analysis
  • Heavy Metals in Plants
  • Aeolian processes and effects
  • Plant responses to elevated CO2
  • Plant Ecology and Taxonomy Studies
  • Ubiquitin and proteasome pathways
  • Bioenergy crop production and management
  • Wind Energy Research and Development

Lanzhou University
2022-2024

Beijing Forestry University
2019-2022

Shaheed Benazir Bhutto University
2015-2022

Zhejiang University
2019-2020

Leaf functional traits profoundly impact the function of diverse-biomes under different environmental conditions. Thus, it is urgent to deeply understand how leaf and nitrogen (N) develop photosynthesis adaptive-strategies across groups biomes. We compiled information from previous studies on six climates determine difference in (forbs, deciduous-shrubs, deciduous-trees, evergreen-needle) related traits: (Amass, Aarea), dark respiration (dRmass, dRarea), Nmass, Narea, life-span (LL),...

10.1016/j.ecolind.2022.109098 article EN cc-by-nc-nd Ecological Indicators 2022-06-25

Abstract Grazing is one of the major anthropogenic driving factors influencing community structure and ecological function grasslands. Fencing has been proved to be main measures for rehabilitating degraded grasslands in northwestern China. However, data from combined empirical studies on effects different management regimes desert are lacking. So we selected long‐term fencing (fenced since 1991), mid‐term seasonal 2002), adjacent free‐grazing investigate vegetation soil properties southwest...

10.1002/ece3.4958 article EN cc-by Ecology and Evolution 2019-02-28

With the rapid development of wind power, there are increasing concerns about negative ecological effects its construction and operation. However, previous studies have mainly focused on farms flying fauna (i.e., birds bats) or climate change separately from communities ecosystems, little attention has been paid to vegetation during farm Furthermore, few referred vulnerable ecosystems with low biomass biodiversity. In this research, a field study was conducted investigate individual traits,...

10.1038/s41598-019-42569-0 article EN cc-by Scientific Reports 2019-04-26

Monitoring and mapping forest carbon is critical for informing climate change mitigation measures. Evidence indicates that edges hold less than the interior. In this study, using field inventory data from a Chinese fir ecosystem in southeast China, at edge interior different elevations was measured. The results showed significant increasing trend with elevation. also revealed had significantly lower Carbon density values varied between 265 Mg C ha−1 320 study highlights ignoring effects...

10.1080/17583004.2018.1537517 article EN Carbon Management 2019-01-02

The limited availability of nitrogen (N) is a fundamental challenge for many crop plants. We have hypothesized that the relative photosynthetic rate (P) exponentially constrained by certain plant-specific enzyme activities, such as ribulose-1,5-bisphosphate carboxylase/oxygenase (Rubisco), NADP-glyceraldehyde-3-phosphate dehydrogenase (NADP-G3PDH), 3-phosphoglyceric acid (PGA) kinase, and chloroplast fructose-1,6-bisphosphatase (cpFBPase), in Triticum aestivum Oryza sativa. conducted...

10.3389/fpls.2020.533341 article EN cc-by Frontiers in Plant Science 2020-09-25

Quantifying the dryland patterns of plant carbon (C), nitrogen (N), and phosphorus (P) concentrations their stoichiometric values along environmental gradients is crucial for understanding ecological strategies. To understand adaptive strategies ecosystem nutrient across three desert ecosystems (e.g., desert, steppe temperate desert), we compiled a dataset consisting 1295 species ecosystems. We assessed element ratios growth forms, organs, soils further analysed leaf vs. root N, P, N:P...

10.3390/f15040607 article EN Forests 2024-03-27

With ongoing climate change and rapid urbanization, the influence of extreme weather conditions on long-term nocturnal sap flow (Qn) dynamics in subtropical urban tree species is poorly understood despite importance Qn for water budgets development plantation. We continuously measured nighttime Ficus concinna over multiple years (2014–2020) a megacity, Shenzhen, to explore environmental controls plant consumption at different timescales. Nocturnally, was shown be positively driven by air...

10.3390/f13071059 article EN Forests 2022-07-05

The present study estimates carbon stocks (C-stocks) of the Oak scrub forest Sheringal valley through field inventory. Stem density (ha&#451), tree height (m), basal area (m2&#183ha&#451), stem volume biomass (t&#183ha&#451), total and C-stock were calculated. varied between 80±8.16 to 510 ± 42 trees ha&#451, with a mean value 226 7 tress ha&#451. average height, 5.47 0.76 m, 12.82 0.25 m2&#183ha&#451 46.37 0.85 m3&#183ha&#451 respectively. calculated was 32.46 0.60 t&#183ha&#451 51.61...

10.4236/ojf.2015.55044 article EN Open Journal of Forestry 2015-01-01

Current study was aimed at ecological investigation of floristic composition, characteristicsand biological spectrum district Bannu, KP, Pakistan. In the present study, 193 plant species 154 generabelonging to 54 families were studied during 2013-2014, using frequent field visits in all seasons for plantcollection. 75.13 percent (145/193) belonged dicotyledons whereas, 24.87 (48/193) speciescomes from monocotyledons. Poaceae leading family with 37 species. Based on habitat most plants...

10.1080/09709274.2016.11906981 article EN Journal of Human Ecology 2016-04-01

Abstract The loglinear pattern of respiratory scaling has been studied for over a century, while an increasing number non-loglinear patterns have found in the plant kingdom. Several previous studies had attempted to reconcile conflicting from aspects statistical approaches and developmental stages organisms. However, underlying enzymatic mechanism was largely ignored. Here, we propose enzyme-driven law photosynthetic test it typical crop seedlings under different water conditions. results...

10.1038/s41598-020-69702-8 article EN cc-by Scientific Reports 2020-07-29

With ongoing climate change and rapid urbanization, the influence of extreme weather conditions on long-term nocturnal sap flow (Q n ) dynamics in subtropical urban tree species is poorly understood despite importance Q for water budgets development plantation. To attend to this deficit, we continuously measured nighttime Ficus concinna over multi-year basic (2014-2020) a megacity, Shenzhen explore environmental controls plant water-consumption at different timescales. This study also...

10.2139/ssrn.4069594 article EN SSRN Electronic Journal 2022-01-01

Abstract With climate change, understanding tree responses to is important for predicting trees’ growth, and plant competition as a nonnegligible biotic factor plays key role in such response. However, few studies have investigated how affects the response of Pinus tabulaeformis plantations . In our study, we nine 29-year-old P. plantation plots (three density gradients). The dendroecological method was used analyze impact on s drought interannual variation. Stand index indicate intensity...

10.21203/rs.3.rs-619294/v1 preprint EN cc-by Research Square (Research Square) 2021-06-29
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