Results 71 to 80 of about 2,028,175 (309)

Holocene vegetation change and fire–plant diversity shifts in Mediterranean France

open access: yesJournal of Quaternary Science, EarlyView.
ABSTRACT Changes in fire activity are recognized as a major threat to biodiversity and vegetation communities across the Mediterranean Basin. However, long‐term fire–vegetation interactions remain poorly investigated. Here, we combine a high‐resolution charcoal record with pollen data from the “Étang des Aulnes” lake (southern France) to reconstruct ...
Cécile Latapy   +13 more
wiley   +1 more source

Can water allocation in the Yellow River basin be improved?: Insights from a multi-agent system model [PDF]

open access: yes
In 1999, the Government of China enforced a cross-provincial, quota-based Water Allocation Agreement that was developed in 1987 and titled Unified Water Flow Regulation (UWFR) to ensure that flow to the Yellow River mouth would not be cut off.
Zhao, Jianshi   +3 more
core  

2006 Delaware River and Bay Integrated List Water Quality Assessment

open access: yes, 2006
This report provides an assessment of the Delaware River's support of various uses from 2002 through 2004 that are protected by the Delaware River Basin Commission's (DRBC) Water Quality Regulations, or by the federal Clean Water Act of 1972.

core   +1 more source

Effects of Fertilization and Wheat Straw Management on Rice Yield and Greenhouse Gas Emissions in Paddy Fields

open access: yesLand Degradation &Development, EarlyView.
ABSTRACT Environmental pollution caused by excessive nitrogen fertilization has become increasingly serious, making optimized fertilization and straw management critical for improving agricultural sustainability. This study involved a two‐year field trial with three fertilization strategies: conventional fertilization (CF), 23.50% nitrogen reduction ...
Jiahao Xiao   +6 more
wiley   +1 more source

Delaware River Basin Commission 2004 Integrated List Assessment Methodology

open access: yes, 2004
This assessment methodology discusses how the main stem of the Delaware River and the Delaware Bay are broken up into Assessment Units (AU) and how data collected from within those AUs are used to evaluate designated use support. The designated uses that

core   +1 more source

Assessing the climatic effects and feedback mechanisms of large-scale crop irrigation using the improved WRF model

open access: yesAgricultural Water Management
Large-scale crop irrigation (LSCI) plays an important role in regulating regional hydrometeorological processes and influencing climate conditions. This study investigates the climatic effects and underlying mechanisms of LSCI in the Huanghe-Huaihe-Haihe
Haodong Deng   +9 more
doaj   +1 more source

Post‐Fire Soil Organic Carbon Dynamics: Decline and Recovery Over Two Decades

open access: yesLand Degradation &Development, EarlyView.
ABSTRACT Wildfire can significantly alter soil organic carbon (SOC) dynamics in forest ecosystems, with complex temporal patterns following fire events. However, research on post‐fire SOC recovery remains limited, particularly in dry‐warm valley regions that are prone to frequent forest fires.
Yuxin Cen   +7 more
wiley   +1 more source

Flood prevention on the lower reaches of the Rellow River

open access: yes, 1990
Proceedings of a congerence in Zhenzhou, China, 1990: Gong Shiyan, Wu Zhiyao: Introduction. Bao Zicheng, Zhang Mingde, Wang Rudiu: Strenghtening of dykes by Warping.
Shiyang, Gong (author)   +1 more
core  

Bauhinia naniflora: a new species of section Amaria (Cercidoideae: Leguminosae) from Colombia

open access: yesNordic Journal of Botany, EarlyView.
Bauhinia, the most species‐rich genus of Cercidoideae (Leguminosae), is pantropically distributed and includes four sections in the Americas. During an ongoing taxonomic revision of American Cercidoideae, a new species of Bauhinia sect. Amaria ser. Decandrae currently endemic to Colombia was identified and is here described as Bauhinia naniflorasp nov.
Luis Carlos Casas‐Restrepo   +4 more
wiley   +1 more source

Water productivity assessment for China's Yellow river basin

open access: yes, 2017
The second longest river in China after the Yangtze, the Yellow River and its basin (YRB) is the breadbasket of China and the cradle of Chinese civilization. With only 2 percent of national water resources, the basin generated 14 percent of Chinese grain
Cai, Ximing; Yang, Yi-Chen E.; Ringler, Claudia; You, Liangzhi   +1 more
core  

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