摘要
运用地统计学方法,以封丘县景观多样性指数、土壤有机质含量变化值为代表,研究黄河下游沿岸地区景观格局演变的土壤养分效应。结果表明:研究区农业景观多样性2000年比1990年有所降低,土壤有机质含量2006年比1986年有较大幅度增加;两时期变化值的空间分布中随机因素的作用较大,尤其是土壤有机质含量变化。景观多样性指数减小区域发生在封丘县北部并向南延伸,增加区域则分布在封丘县西部、东南部。土壤有机质含量增加幅度较大的区域集中在封丘县东北—西南方向。景观多样性、土壤有机质变化值空间分布的比较表明,景观多样性的稳定有利于土壤有机质的积累。
It is important of researching eco-environment effects of landscape pattern change for analyzing the relation of human activity and eco-environment evolvement, keeping sustainable development of regional eco-envi- ronment. Using geostatistic method, taking landscape diversity index and soil organic material content as examples, the soil nutrient effects of agricultural landscape pattern change in Fengqiu County along lower reaches of the Yellow River was studied in this paper. The results showed as follow： The landscape diversity index reduced from 1990 to 2000 while soil organic material increased at large extent from 1986 to 2006. Random factors play important role in the spatial distribution of change especially of soil organic material content change. The reduce region of landscape diversity index locate in the north part and extend to south, while the increase region locate in the west and south- east part. The soil organic material content increase region distribute from north-east to south-west. The stable land- scape diversity is in favor of soil organic material accumulating.
出处
《地域研究与开发》
CSSCI
北大核心
2008年第5期116-119,共4页
Areal Research and Development
基金
国家自然科学基金资助项目(40671175)
关键词
县域农业
景观多样性
土壤养分
效应
封丘县
county agriculture
landscape diversity index
soil organic material
effects
Fengqiu County
