期刊论文

Spatiotemporal Characteristics of Cropland in Qianjiang City under the Development of Rice-Crayfish Integrated

中文

长江流域资源与环境

1004-8227

2020

29

12

2709-2718

10.11870/cjlyzyyhj202012014

2019YFA0607401:国家重点研发计划 2016CFB558:湖北省自然科学基金 CCNU19TS045:中央高校基本科研业务费专项

本校为第一机构

虾稻共作综合种养模式近年来在长江中下游地区快速发展,探索虾稻共作对农业土地利用的影响,对于科学调控虾稻田发展、确保粮食和生态双安全具有重要意义。该研究以虾稻共作模式发源地———湖北潜江市为研究区域,利用空间分析和破碎度指数方法,分析虾稻共作模式快速推广下潜江市农业土地利用时空格局变化。结果表明:(1)近20年来,耕地时空格局变化过程是以园林办事处(主城区)为中心的建设用地向西至广华镇、南至杨市镇不断扩张,耕地转为新增建设用地达28.64 km~2,约18.59 km~2耕地转换为水域;(2)耕地格局呈现破碎化,主要由城市发展过程中建设用地扩张占用耕地,以及虾稻田快速发展后造成;(3)虾稻田...

The purposes of this study are to explore the impact of the rapid development of rice-crayfish integrated on the utilization of cropland,and how to balance the development of rice-crayfish fields with the food and ecological security. The results show that: (1)The change process of the spatio-temporal pattern of cropland has been expanding westward to Guanghua town and southwest to Yangshi town with the center of the Yuanlin town in the past 20 years. Cropland was converted into newly added construction land for 28.64 km~2 and about 18.59 km~2 water body; (2)The fragmentation of cropland is ma...