Fire history of a ponderosa pine-mixed conifer forest was investigated in the Whiskeytown National Recreation Area, southeastern Klamath Mountains, California. Fire return intervals were found to be frequent and similar to other comparable forests in California. Median fire interval for the six sample plots (1.4–1.7 ha) ranged from 2 to 4 years (mean range, 4.8–7.4 years). Most fires (93%) occu...

Wetlands are valuable ecosystems that provide many valuable services, yet many of these important ecosystems are at risk because of current trends in climate change. The Prairie Pothole Region (PPR) in the upper-midwest of the United States and south-central Canada, characterized by glacially sculpted landscapes and abundant wetlands, is one such vulnerable region. According to regional/global ...

the authors of the present paper studied some aspects of hydro and agrometeorological phenomena in terms of humidness, dryness and crop growing periods over india. revised water balance model is used to obtain the above and the results are examined during the two half centuries i.e 1901 to 1950 and 1951 to 1995 in delineating the climate change impacts over india. palmer drought severity index ...

Zambia recently experienced several environmental threats from climate change such as droughts, temperature rise and occasional flooding they all affect agricultural sustainability people wellbeing through negative effects on plants growing crops. This paper is aimed at showing variations in parameters spatial variability trends different regions of Zambia's key areas (Zambezi River tributaries...

[1] The stable carbon isotope composition (dC) of tree rings in a climate-sensitive region can provide a retrospective view of changes in environment and climate. Here, we report on the development of the first annually resolved dC tree ring chronology obtained from natural forests on the northeastern Tibetan Plateau. Climate data show a warming trend and more frequent droughts occurring in the...

Atlantic White Cedar (AWC) swamps are a globally threatened type of wetland ecosystem and new form ghost forest in the mid-Atlantic region US. Hydrogeomorphic regimes foster peat formation, resulting unique biodiversity carbon sequestration services. Our sites include that exposed to sea-level rise storm-driven seawater intrusion, yet other protected by higher elevations. In this study, we eval...

Drought is a natural disaster with long duration and which causes great harm. Studying the characteristics of drought evolution in Shanxi Province can grasp regularity occurrence provide basis for prevention resistance. This study utilizes MODIS products to analyze quantify extent specific area. The calculates several indices, including Crop Water Stress Index (CWSI), Vegetation Supply (VSWI), ...