Forest growth and species distribution in a changing climate.

摘要: Climate change has many potential effects on plants, some detrimental to growth, others beneficial. Increasing CO(2) concentration can increase photosynthetic rates, with the greatest increases likely be in C(3) plants growing warm dry conditions. temperature directly affects plant growth through and respiration rates. However, have a considerable ability adapt changing conditions tolerate extremely high temperatures, provided that adequate water is available. may vapor pressure deficits of air, thereby transpiration rates from most canopies. Effects are vary among communities, forests generally experiencing greater than grasslands. These reduced by stomatal closure response increasing concentration. In areas, precipitation will probably global warming; however, these insufficient meet increased transpirational demand soil organic matter decomposition so nutrients more readily mineralized made available plants. highly fertile systems, this could lead nutrient losses leaching. For different combinations concentration, for systems primarily affected or limitations, overall productivity expected. Responses negative circumstances positive others, but whole, catastrophic changes forest seem unlikely under contrast,ecological consequences climate potentially serious. The distribution species tends limited narrow range environmental over much species' current natural therefore become unsuitable, leading significant decline particular within forests.