Journal of Geo-information Science, Volume. 22, Issue 3, 592(2020)
Figures & Tables(11)
Fig. 4. Permanent prime farmland demarcation based on LESA system in Wuhan
Fig. 5. Basic map for permanent prime farmland demarcation in Wuhan
Fig. 6. Permanent prime farmland demarcation in Wuhan based on LANDSCAPE model
Table 1. Indexes, assessment methods and weights of permanent prime farmland demarcation in Wuhan City
View tableView in ArticleTable 1. Indexes, assessment methods and weights of permanent prime farmland demarcation in Wuhan City
LESA体系 一级指标 二级指标 指标赋值标准 权重 100 80 60 40 20 耕地质量(LE) 土壤条件 有机质含量 27.10~30.79 24.90~27.1 23.00~24.90 20.90~23.00 16.70~20.90 0.19 表层质地 壤土 粘壤土 粘土 砂土 0.15 pH值 6.5~7.5 5.5~6.5 7.5~8.0 5.0~5.5 4.5~5.0 0.11 地形条件 坡度 <2 2~10 10~25 ≥25 0.12 高程 <31.19 31.19~47.69 47.69~76.57 76.57~161.15 >161.15 0.08 基础设施条件 灌溉条件 充分满足 基本满足 不满足 0.20 排水条件 充分满足 基本满足 不满足 0.15 立地条件(SA) 区位条件 到主干道距离/km ≤0.5 0.5~1.0 1.0~1.5 1.5~2.0 >2.0 0.19 到水源距离/km ≤0.5 0.5~1.0 1.0~1.5 1.5~2.0 >2.0 0.18 到居民点距离/km ≤0.2 0.2~0.5 0.5~0.8 0.8~1.2 >1.2 0.23 空间形态 连片度 P =100(Si -S min)/(S max-S min)0.16 形状指数 E =100(Ei -E min)/(E max-E min)0.24
Table 2. LESA comprehensive score statistics and classification of farmland in Wuhan
View tableView in ArticleTable 2. LESA comprehensive score statistics and classification of farmland in Wuhan
耕地等级 LESA综合分值/分 耕地面积/km2 比例/% I >75 278.40 5.45 II 65~75 1699.32 33.29 III 55~65 2161.47 42.35 IV 45~55 874.77 17.14 V <45 90.16 1.77
Table 3. Results of permanent prime farmland demarcation simulation in Wuhan (hm2)
View tableView in ArticleTable 3. Results of permanent prime farmland demarcation simulation in Wuhan (hm2)
地类 一般耕地 林地 草地 河流 湿地 城镇建设用地 农村建设用地 未利用地 永久基本农田 面积 197 509 70 359 4995 28 472 129 843 160 000 21 252 256 243 200 城市扩张占用面积 19 372 6873 2928 0 26 373 - 4 181 344 0 新划入的永久基本农田面积 215 360 0 0 0 0 0 0 0 -
Table 4. Comparison of quality grade of permanent prime farmland demarcated based on two methods
View tableView in ArticleTable 4. Comparison of quality grade of permanent prime farmland demarcated based on two methods
县域耕地地力等级 LESA方法划定 LANDSCAPE方法划定 农田面积/hm2 比例/% 农田面积/hm2 比例/% 1 46 515 22.67 45 157 22.58 2 21 464 10.46 21 189 10.59 3 25 622 12.49 25 194 12.60 4 40 367 19.68 36 453 18.22 5 35 544 17.33 34 483 17.24
Table 5. Comparison of landscape index of permanent prime farmland demarcated based on two methods
View tableView in ArticleTable 5. Comparison of landscape index of permanent prime farmland demarcated based on two methods
永久基本农田划分方法 斑块数量/个 平均斑块面积/hm2 破碎度 平均斑块分维数 面积加权平均形状因子 LESA 3072 156.12 1.2566E-06 1.2845 1.2180 LANDSCAPE 1457 317.66 5.9885E-07 1.2473 1.1540
Tools
Get Citation
Copy Citation Text
Hui HUANG, Xinli KE.
Paper Information
Received: Jul. 31, 2019
Accepted: --
Published Online: Sep. 16, 2020
The Author Email: KE Xinli (kexl@mail.hzau.edu.cn)
© Copyright 2018-2021 | Chinese Laser Press.
All Rights Reserved 沪ICP备15018463号-20