桐城水芹是安徽省著名的特产蔬菜。为了扩大种植范围,在生态地质环境和水芹现状种植区调查,以及样品采集分析的基础上,探讨水芹适宜生长要素,评价水芹适宜种植区。结果表明,水芹现状种植区适宜生长要素主要有地形地貌、土壤母质与土壤...桐城水芹是安徽省著名的特产蔬菜。为了扩大种植范围,在生态地质环境和水芹现状种植区调查,以及样品采集分析的基础上,探讨水芹适宜生长要素,评价水芹适宜种植区。结果表明,水芹现状种植区适宜生长要素主要有地形地貌、土壤母质与土壤类型、灌溉水源与水质、土壤环境地球化学。基于单要素评价结果,多要素综合评价结果表明,水芹适宜种植区主要沿着龙眠河和挂车河分布,面积合计约107 km 2。展开更多
In Antarctica, the marine ecosystem is dynamically interrelated with the terrestrial ecosystem. An example of the link between these two ecosystems is the biogeochemical cycle of phosphorus. Bio- vectors, such as peng...In Antarctica, the marine ecosystem is dynamically interrelated with the terrestrial ecosystem. An example of the link between these two ecosystems is the biogeochemical cycle of phosphorus. Bio- vectors, such as penguins, transport phosphorus from sea to land, play a key role in this cycle. In this paper, we selected three colonies of penguins, the most important seabirds in Antarctica, and computed the annual quantity of phosphorus transferred from sea to land by these birds. Our results show that adult penguins from colonies at Ardley Island, the Vestfold Hills, and Ross Island could transfer phosphorus in the form of guano at up to 12 349, 167 036, and 97 841 kg/a, respectively, over their breeding period. These quantities are equivalent to an annual input of 3.96× 10^9-1.63 × 10^10 kg of seawater to the land of Antarctica. Finally, we discuss the impact of phosphorus on the ice-flee areas of the Antarctica.展开更多
文摘桐城水芹是安徽省著名的特产蔬菜。为了扩大种植范围,在生态地质环境和水芹现状种植区调查,以及样品采集分析的基础上,探讨水芹适宜生长要素,评价水芹适宜种植区。结果表明,水芹现状种植区适宜生长要素主要有地形地貌、土壤母质与土壤类型、灌溉水源与水质、土壤环境地球化学。基于单要素评价结果,多要素综合评价结果表明,水芹适宜种植区主要沿着龙眠河和挂车河分布,面积合计约107 km 2。
基金Supported by the National Natural Science Foundation of China(Nos.40730107,41106162)the Chinese Polar Environment Comprehensive Investigation and Assessment Programs(Nos.CHINARE 2014-04-01,CHINARE 2014-02-01,CHINARE 2014-04-04)the Doctoral Fund of Ministry of Education of China(No.20103402110023)
文摘In Antarctica, the marine ecosystem is dynamically interrelated with the terrestrial ecosystem. An example of the link between these two ecosystems is the biogeochemical cycle of phosphorus. Bio- vectors, such as penguins, transport phosphorus from sea to land, play a key role in this cycle. In this paper, we selected three colonies of penguins, the most important seabirds in Antarctica, and computed the annual quantity of phosphorus transferred from sea to land by these birds. Our results show that adult penguins from colonies at Ardley Island, the Vestfold Hills, and Ross Island could transfer phosphorus in the form of guano at up to 12 349, 167 036, and 97 841 kg/a, respectively, over their breeding period. These quantities are equivalent to an annual input of 3.96× 10^9-1.63 × 10^10 kg of seawater to the land of Antarctica. Finally, we discuss the impact of phosphorus on the ice-flee areas of the Antarctica.
