河北省近40年耕地时空变化特征研究

Study on Temporal and Spatial Change of Cultivated Land in Hebei Province in Recent 40 Years

为更好利用河北省的耕地资源,对河北省近40年耕地时空变化特征开展研究。以河北省耕地数据为基础,结合动态度、转移矩阵以及转移图谱等方法定量分析耕地变化特征。研究表明:1980—2020年,耕地是河北省最主要的土地资源,集中分布于南部区域。耕地变化幅度最大的3个城市为保定、邯郸和石家庄,耕地变化幅度最小的城市为秦皇岛。从转入转出情况来看,1980—2020年,耕地流失方向主要为耕地→城镇用地,耕地共计流失26676km^(2),耕地来源主要有城镇用地、草地和林地,耕地共计转入18029km^(2)。1980—2020年,河北省耕地新增面积为18014km^(2),其中,张家口、承德、保定3个城市耕地新增面积最多,分别为4225km^(2)、3768km^(2)、1925km^(2);河北省耕地萎缩的面积为26661km^(2),其中,张家口、承德、保定3个城市耕地萎缩的面积最大,分别为5017km^(2)、4190km^(2)、3064km^(2)。本研究可为耕地占补政策提供数据支撑。

To better utilize the arable land resources in Hebei Province,research was conducted on the spatiotemporal changes of arable land in Hebei Province over the past 40 years.Based on the data of cultivated land in Hebei Province,this paper quantitatively analyzes the characteristics of cultivated land change by combining dynamic degree,stochastic matrix and transfer atlas.Research shows that between 1980 and 2020,arable land was the most important land resource in Hebei Province,concentrated in the southern region.The three cities with the largest changes in arable land are Baoding,Handan,and Shijiazhuang,while the city with the smallest changes in arable land is Qinhuangdao.From the perspective of transfer in and out,from 1980 to 2020,the main direction of farmland loss was farmland-→urban land,with a total loss of 26676 km^(2).The main sources of farmland were urban land,grassland,and forest land,with a total loss of 18029 km^(2).Between 1980 and 2020,the newly added area of cultivated land in Hebei Province was 18014 km^(2),with Zhangjiakou,Chengde,and Baoding having the highest newly added area of cultivated land,with 4225 km^(2),3768km^(2),and 1925km^(2)respectively.The area of cultivated land shrinkage in Hebei Province is 26661 km^(2),among which Zhangjiakou,Chengde,and Baoding have the largest areas of cultivated land shrinkage,with 5017km^(2),4190km^(2),and 3064km^(2),respectively.This study can provide data support for the policy of land occupation and compensation.