Baldcypress Dendroclimatology in the Southeastern United States

美国东南部的气候历史鲜为人知。近年来，该地区遭受了长期、毁灭性的干旱条件。由于该地区气候的历史记录不完整，我们不知道这些干旱是否反映了该地区气候的变化，或者这些情况是否在全新世晚期频繁发生。该提案要求支持利用长寿、秃顶的柏树生长带重建该地区过去1000年的气候历史。私人投资机构在该地区发现了1000至1700年的光秃秃的柏树，在之前的一次赠款中，他们开始根据树木的年轮年表重建干旱和其他气候变化的历史。这项研究之所以重要，是因为它将产生：1)每年分解的气候变化的长期记录；2)美国气候敏感地区干旱历史的基线研究。

The history of climate in the southeastern United States is poorly known. In recent years, this region has suffered from prolonged, devastating drought conditions. Since the historical record of climate in this region is incomplete, we do not know if these droughts reflect a change in the climate of this region, or if these conditions have reoccurred frequently during the late Holocene. This proposal requests support to reconstruct the history of climate in this region for the last 1000 years using growth bands of long-living, bald cypress trees. The PIs have discovered 1000 to 1700 year old bald cypress trees in this region and during a previous grant they began to reconstruct the history of drought and other climate changes from their tree-ring chronologies. This research is important because it will produce: 1) long records of annually-resolved climate change and 2) baseline studies of the history of drought in a climatically- sensitive region of the U. S.