Climatic and environmental change in Yanchi Lake, Northwest China since the Late Glacial : a comprehensive analysis of lake sediments
China ; Climate ; Climatic change ; Environment ; Environmental change ; Glacial features ; Holocene ; Lacustrine sediment ; Lake ; Lithology ; North-Western China ; Palaeoclimate
Cambio climático ; China ; China del Noroeste ; Clima ; Glaciar ; Holoceno ; Lago ; Litología ; Medio ambiente ; Paleoclima ; Sedimento lacustre
This article discusses the climatic and environmental change in Yanchi Lake, Northwest China since the Late Glacial through a comprehensive analysis of lake sediments. The results show that the lower part of the lacustrine section is formed mainly
Change analysis of rice area and production in China during the past three decades
Agricultural production ; Agriculture ; Arable land ; China ; Irrigated farming ; Location ; Rice ; Spatial analysis ; Spatial distribution ; Spatial variation
Agricultura ; Análisis espacial ; Arroz ; China ; Cultivo de regadío ; Distribución espacial ; Localización ; Producción agrícola ; Tierra arable ; Variación espacial
to get a series of spatial distributions of rice area and production and to analyze the pattern of spatial and temporal changes. Spatially , most of the increased area and production were in Northeast China, especially, in Jilin and Heilongjiang ; most
of the decreased area and production were located in Southeast China, especially, in regions of rapidly urbanization in Guangdong, Fujian and Zhejiang. This implies that rice production increase may be due to area expansion and other non-area factors, but reduced