aggrieve
发表于 2025-3-28 17:22:50
Air Pollution Effects on Growth of Ponderosa Pine, Jeffrey Pine, and Bigcone Douglas-Firern edges of the range. This inflow pattern results in elevated ambient levels of pollutants in most forest areas below 2,600 m and a northeast-to-southwest gradient of increasing pollution across the mountain range (Bytnerowicz et al., this volume). The highest air pollution levels in the San Berna
COWER
发表于 2025-3-28 21:53:00
Effects of Ozone on Understory Vegetation in the Mixed Conifer Forestrophs), and decomposers (bacteria, fungi, and other single-celled organisms) found in the forest, all of which contribute to the complex processes of energy flow, storage, and biogeochemical cycling. Although not the dominant vegetation, the herbaceous and woody plants of the mixed conifer forest un
无聊的人
发表于 2025-3-28 23:41:22
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hurricane
发表于 2025-3-29 03:28:19
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FATAL
发表于 2025-3-29 08:44:46
Direct Effects of Nitric Acid on Forest Treesonsible for these increases (Hanson and Lindberg 1991), and with the industrialization of the Third World nations, global N pollution will likely continue to increase over the next several decades (Vitousek 1995). In dense urban areas such as southern California, nitrogen oxides are a major componen
CLOWN
发表于 2025-3-29 11:35:35
Nitrogen Deposition and Cycling in Mediterranean Forests: The New Paradigm of Nitrogen Excesser 1992; Miller and Rechel, this volume), the ecosystem effects of chronic N deposition have only recently been investigated (Fenn and Dunn 1989; Fenn 1991; Fenn et al. 1996). Ozone exposure causes characteristic symptoms in ponderosa pine such as chlorotic mottle of foliage and reduced foliar reten
火花
发表于 2025-3-29 19:07:11
Insects and Pathogens in a Pollution-Stressed Forestres and pathogens of forest trees perform important functions in natural ecosystems, killing decadent trees, recycling nutrients, and creating gaps for regeneration. These insects and diseases are defined as pests when their activities interfere with management objectives for a stand. Such activitie
真
发表于 2025-3-29 23:13:27
Impact of Oxidant Air Pollutants on Forest Succession in the Mixed Conifer Forests of the San Bernaruggested that air pollution induced successional changes that were occurring in the coastal sage scrub communities of southern California. Air pollution differentially affects the survival, growth, and reproduction of the species making up a plant community. These impacts influence the competitive r
易于
发表于 2025-3-30 01:04:37
re three pollutant indicators of monitoring data. According to the Chinese National Ambient Air Quality Standard (CNAAQS) GB3095–1996, as NAAQS GB3095–2012 was adopted in 2012, the study of the period 2003–2012 was using NAAQS GB3095–1996. The daily average concentration of major air pollutants of S
OGLE
发表于 2025-3-30 07:09:07
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