Long-Term Biogeochemical Changes in China's Anthropogenic Landscapes

中国人为景观的长期生物地球化学变化本研究将测量中国人口密集的农业村庄景观中碳、氮、磷（C、N、P）的长期生物地球化学变化。本文将采用高分辨率卫星影像、第二次世界大战航空摄影和精确土地调查相结合的方法，结合材料采样、住户调查、老人访谈和历史资源，对具有代表性的5个5 × 5公里的中国农业区景观进行工业化前（~1930年）和现状的测量。然后，将比较当前和工业化前的测量结果，以检查景观结构、人口密度、农业实践和燃料燃烧变化对驱动每个站点碳、氮和磷储存和通量长期变化的相对影响。将实地测量与区域和遥感数据相结合，将提高世界上发展最快的地区之一的全球生物地球化学变化估计的准确性，展示用于研究人为生态系统的实地和统计工具。

00-7561EllisLong-term Biogeochemical Changes in China's Anthropogenic LandscapesThis study will measure long-term changes in the biogeochemistry of carbon, ni-trogen and phosphorus (C, N, P) across the densely populated agricultural village landscapes of China. The pre-industrial (~1930) and current state of five 5 x 5 km landscape scenes representative of China's agricultural regions will be measured by combining high-resolution satellite imagery, World War II aerial photography and precision land surveys with material sampling, household surveys, elder interviews and historical resources. Current and pre-industrial measurements will then be compared to examine the relative impacts of changes in landscape structure, popu-lation density, agricultural practices, and fuel combustion in driving long-term changes in C, N and P storage and flux across each site. Integration of field meas-urements with regional and remotely sensed data will improve the accuracy of global biogeochemical change estimates across one of the most rapidly developing areas of the world, demonstrating field and statistical tools for the study of anthro-pogenic ecosystems.