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

• 批准号: 0075617
• 负责人: Erle Ellis
• 金额: $ 80.15万
• 依托单位: University of Maryland Baltimore County
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2000
• 资助国家: 美国
• 起止时间: 2000-09-01 至 2006-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0075617&HistoricalAwards=false
• 关键词: Long; Term; Biogeochemical; Changes; China

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.

00 - 7561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稠密的农业村庄景观中碳、氮和磷（C、N、P）的长期生物地球化学变化。 将通过结合高分辨率卫星图像、第二次世界大战航空摄影和精密土地调查，以及材料取样、住户调查、老年人访谈和历史资源，测量工业化前（~1930年）和目前代表中国农业地区的五个5 x 5公里景观场景。 然后将比较当前和工业化前的测量结果，以研究景观结构、人口密度、农业实践和燃料燃烧变化对每个地点C、N和P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，将提高对世界上发展最迅速的地区之一的全球生物地球化学变化估计的准确性，展示研究人为生态系统的实地和统计工具。