江苏沿海耕地资源量空间分布态势评价

首先采用农用地分等中自然质量分值的计算方法对江苏沿海耕地自然质量进行测算,然后在此基础上结合各乡镇耕地面积和人口数量计算人均耕地量,对江苏沿海地区耕地资源量的空间分布态势进行评价。结果表明:研究区北部、中西部和南部除少数地区外耕地质量总体较好,中东部耕地质量较差;耕地质量优良的地区人均耕地量水平较低,耕地质量较差的地区人均耕地量水平反而较高。根据评价结果,从提高土地整体利用效率、合理占用耕地、合理开发土地后备资源、污染排放源头控制与生产过程中治理相结合等几个方面提出了沿海地区耕地资源可持续利用的有效途径。

Spatial Distribution of Farmland Resources in the Coastal Region of Jiangsu

Natural quality of farmlands in the coastal region of Jiangsu was evaluated, by calculating pointvalues of natural quality of the farmlands in grading. Based on the calculation results and the data on acreage of farmland and population, the acreage of farmland per capita was figured out, and then spatial distribution of the farmland resources in the coastal region was assessed. Results showed that the farmlands in the northern, mid-western and southern parts of the region, excluding a few zones were on the whole quite good in quality, while the farmlands in the mid-eastern part were comparatively low. Rather interesting, the acreage of farmland per capita was comparatively smaller in the parts where the farmlands were superior in quality, and relatively bigger in the parts where the farmlands were inferior in quality. Based on the findings, some effective ways were brought forth to keep sustainable development and utilization of the farmland resources in the coastal region by improving overall land use efficiency, rationalizing alienation of farmlands, exploiting land reserves reasonably, and controlling pollution at its source in combination with management of pollution during the course of production.