摘要
The research selected five indices to measure fragmentation degrees of three landforms with GIS and analyzed the relationship with production profits of arable lands. The results showed that fragmentation degree of arable lands tends to be volatile upon landforms, For example, the fragmentation degree of mountainous area reached 0.985, followed by hills of 0.705 and the fragmentation degree of plains was the least at 0.068. Production profits of arable lands were negatively correlated with arable landscape fragmentation. Hence, it is necessary to take measures to reduce landscape fragmentation as per specific local circumstances to imorove production Drofits.
基于GIS技术,采用5个指标测度了3种不同地貌类型的耕地景观破碎度,分析了其与耕地生产效益的关系。结果表明:13种不同地貌类型的景观破碎度差异较大,山地耕地景观破碎度最高,达0.985;丘陵耕地景观破碎度次之,为0.705;以平原耕地景观破碎度最小,为0.068。2耕地的生产效益与耕地景观破碎度呈负相关性的特点。为此需要针对不同地貌类型的耕地,需要采用不同的耕地整治措施来降低耕地景观破碎度,从而提高耕地生产效益。
