Results 41 to 50 of about 3,780 (184)

Global urban expansion offsets climate-driven increases in terrestrial net primary productivity

Nature Communications, 2019
Robust estimates of either urban expansion worldwide or the effects of such phenomenon on terrestrial net primary productivity (NPP) are lacking. Here the authors used the new dataset of global land use to show that the global urban areas expanded ...
Xiaoping Liu, Fengsong Pei, Youyue Wen, Xia Li, Shaojian Wang, Changjiang Wu, Yiling Cai, Jianguo Wu, Jun Chen, Kuishuang Feng, Junguo Liu, Klaus Hubacek, Steven J. Davis, Wenping Yuan, Le Yu, Zhu Liu   +15 more
doaj   +1 more source

Remote Sensing for Irrigation Water Management—The State of the Art and Prospects for Near‐Future Operations

Irrigation and Drainage, EarlyView.
ABSTRACT A recent UN report describes many regions as facing ‘water bankruptcy,’ a condition in which available water resources can no longer meet existing demands. In practice, this means irrigation will likely bear the greatest burden of future water‐use reductions, a complicated and fraught decision to make given its critical role in food security ...
Wim G. M. Bastiaanssen, Chris Perry, Royce Dalby, Yasir Mohamed, Xueliang Cai, Poolad Karimi, IJsbrand de Jong, Pasquale Steduto, Marat Beksultanov, Christopher C. M. Neale, David Molden, Waqas Awan, Laarousi Mohamed, Jippe Hoogeveen, Jeff Davids, Nutchanart Sriwongsitanon, P. S. Rao, Roula Bachour, Palitha Bandara, Sophea Chhim, Richard Evans, Tom Lahad, D. Nagesh Kumar, Zakaria Adawy, Devendra Singh Bundela, Kawa Hakzi, Isaya Kisekka, Nicolas Puelma, Alejandro A. Pannunzio, Benjamin Koetz, Mukhiddin Ibragimov   +30 more
wiley   +1 more source

‘The most advanced outpost of cultivation’: palynological evidence for cereal agriculture and population resilience in a marginal upland environment

Journal of Quaternary Science, EarlyView.
ABSTRACT Upland farming in Europe is frequently assumed to have been limited and precarious, despite relict spade‐dug ridges providing firm evidence of past crop growing. Direct evidence for crop types in post‑Medieval to Modern (~since 1500 CE) uplands is rare; yet, in Ireland, relict spade‐dug ridges that date to this period are commonly interpreted ...
Helen Essell, Gill Plunkett
wiley   +1 more source

THE INFLUENCE OF DEPTH TO PRIMARY PRODUCTIVITY IN BAMA BEACH, BALURAN NATIONAL PARK [PDF]

Russian Journal of Agricultural and Socio-Economic Sciences
Bama Beach is one of the beaches used as a tourist destination in Baluran National Park. Coral reefs are coastal ecosystems that have high productivity. This research will study the difference primary productivity of coral reef ecosystems at depth 1 - 10
Widhi R.N., Paluphi R.W.
doaj  

Linking Ecosystem Risk, Health, Services to Ecological Security Assessment in the Yellow River Basin: Spatiotemporal Dynamics and Nonlinear Driving Characteristics

Land Degradation &Development, EarlyView.
ABSTRACT A scientific assessment of ecological security (ES) and its nonlinear mechanism for key driving factors in the Yellow River Basin (YRB) is of great significance for ecological protection and sustainable development. This study proposes an ES assessment framework, which links ecosystem risk (ER), ecosystem health (EH), and ecosystem services ...
Menghao Yang, Ming Wang, Haipeng Zhang, Zhihong Yao   +3 more
wiley   +1 more source

Quantitative Assessment of Factors Influencing the Spatiotemporal Variation in Carbon Dioxide Fluxes Simulated by Multi-Source Remote Sensing Data in Tropical Vegetation

Remote Sensing, 2023
Vegetation plays a vital role in the global carbon cycle, a function of particular significance in regulating carbon dioxide fluxes within tropical ecosystems.
Ruize Xu, Jiahua Zhang, Jingwen Wang, Fengmei Yao, Sha Zhang   +4 more
doaj   +1 more source

Prioritising Carbon Sequestration Areas in Southern Queensland using Time Series MODIS Net Primary Productivity (NPP) Imagery [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2014
Abstract. The aim of this study was to develop a method that will use satellite imagery to identify areas of high forest growth and productivity, as a primary input in prioritising revegetation sites for carbon sequestration. Using the Moderate Resolution Imaging Spectroradiometer (MODIS) satellite data, this study analysed the annual net primary ...
Apan, A., Cadavid, L. A. Suarez, Richardson, L., Maraseni, T.   +3 more
openaire   +4 more sources

Driving Mechanisms of Land Degradation Neutrality at the County Level and Zonal Strategies in the Yellow River's Key Ecological Region (Part II: Post‐Assessment Driver Analysis)

Land Degradation &Development, EarlyView.
ABSTRACT Achieving land degradation neutrality (LDN) is critical for sustainable socio‐ecological development; however, its practical implementation is often hindered by scale mismatches between assessments and administrative units, coupled with an over‐reliance on static drivers.
Shuheng Zhang, Xinyu Guo, Pan Wang, Fulin Wang, Tao Chen   +4 more
wiley   +1 more source

Temporal and Spatial Dynamics and Driving Factors of Vegetation NPP in Western Sichuan from 2000 to 2015

Shuitu baochi yanjiu, 2019
This study is aimed to estimate the net primary productivity of vegetation in western Sichuan and analyze its spatial-temporal pattern and the relationship between net primary productivity (NPP) of vegetation and its driving factors, which provided a ...
CHEN Jie, XIAN Wei, CHEN Chunrong
doaj  

Intercomparison of carbon‐13 and carbon‐14 tracer approaches for estimating marine calcification and net primary production

Limnology and Oceanography: Methods, EarlyView.
Abstract Accurate measurements of phytoplankton net primary production (NPP) and calcification are essential for quantifying marine carbon cycling, yet in situ calcification rates remain poorly constrained. We compared 13C‐ and 14C‐based tracer methods for NPP in laboratory cultures of the diatom Chaetoceros tenuissimus and the coccolithophore ...
Chloe L. Smith, Austin Grubb, Kay D. Bidle, Kimberlee Thamatrakoln, Adam V. Subhas   +4 more
wiley   +1 more source