基于GIS的云南山区玉米生态适宜性评价方法与应用

李超,李文峰,赵耀,尚敬敏

A Method of Ecological Suitability Evaluation and Its Application for Maize Planted in Mountain Farmland Based on GIS (Case Study: Xundian County)

LI Chao,LI WenFeng,ZHAO Yao,SHANG JingMin

表1 玉米生态适宜性评价指标体系及权重

Table 1 Indexes and their weights for evaluation of maize ecological suitability

目标层 Target layer 准则层 Rule layer 权重 Weight 指标层 Index layer 权重 Weight 生态适宜性评价指标Evaluation index system of ecological suitability 气候条件 Climate condition, U1 0.451 日平均气温Daily average temperature, U11 (℃) 0.069 ≥10℃积温≥10℃ accumulated temperature, U12 (℃) 0.188 降水量Precipitation, U13 (mm) 0.116 日照时数Sunshine hours, U14 (h) 0.082 土壤肥力Soil nutrient, U2 0.146 有机质Organic matter, U21 (g·kg-1) 0.057 有效磷Available P, U22 (mg·kg-1) 0.024 速效钾Available K, U23 (mg·kg-1) 0.025 碱解氮 Available N, U24 (mg·kg-1) 0.017 立地条件Site condition, U3 0.168 pH, U31 0.035 土壤质地Soil texture, U32 0.017 坡度Slope, U33 (°) 0.014 坡向Aspect, U34 0.008 海拔Altitude, U35 (m) 0.043 地貌类型Topographic type, U36 0.017 耕层厚度Tillage depth, U37 (cm) 0.034 成土母质Parent material, U38 0.016 土地管理 Land management, U4 0.235 灌溉能力Irrigation, U41 0.113 排涝能力Drainage, U42 (t·km-2) 0.125