摘要
【目的】以大樱桃种植适宜性为分类标准对甘肃省甘谷县进行区划,为给地方政府和农民大樱桃种植的精准选址提供科学依据。【方法】通过分析大樱桃生长所需的光照、气温、水分和肥力等环境条件,确定坡度、坡向、海拔、地块类型、灌溉条件、土壤有机质、土层厚度、土壤pH值和土壤质地等因子为大樱桃种植适宜性的影响因子,并对其进行分级处理,采用AHP法确定因子的权重值。以ArcGIS为平台,以甘谷县农村土地承包经营权确权者调查数据库中的地块划分矢量图斑为基本评价单元,利用气象数据、土壤调查数据和数字地面模型(DEM)数据,获得评价单元各因子的分级值,建立了甘谷县大樱桃生长适宜性区划数据库,然后计算每一个地块的大樱桃生长适宜性的综合指数,再按照综合指数对该县区内所有的大樱桃种植区进行区划。【结果】根据所构建的甘谷县大樱桃生长适宜性区划数据库,将该县的大樱桃种植区划分为高适宜区、适宜区、低适宜区和不适宜区这4类;甘谷县的农用地(耕地和园地)总面积为84175.88 hm^(2),该县区内大樱桃种植的高适宜区、适宜区、低适宜区、不适宜区的面积分别为5097.21、19955.91、58936.33、186.43 hm^(2),分别占该县区农用地总面积的6.06%、23.71%、70.01%、0.22%;该县区内适宜种植大樱桃的地块主要分布在海拔1600 m以下的区域和海拔1600~1800 m的阳坡和半阳坡地中。【结论】研究构建的大樱桃生长适宜性区划数据库可以精准定位到每户农民的每个地块,从中可以查询到该县各地块种值大樱桃的适宜程度,亦可根据地块的环境因子得分指导大樱桃的栽培;而且依据这一数据库对甘肃省甘谷县大樱桃适宜种植区域的划分结果与实地调查的结果基本吻合,这一数据库还能为同类研究提供基本数据。
【Objective】In order to provide a scientific support for local government and farmers to plant cherry,the suitable regionalization of planting cherry was made on the level of Gangu County,Gansu Province.【Method】By analyzing the environmental factors such as light,air temperature,soil moisture and soil fertility,regarded slope,aspect,altitude,land type,irrigation conditions,soil organic matter,depth of soil layer,soil pH and soil texture as the impact factors of suitability evaluation.Meanwhile,above all the factors were graded and given weights through AHP method.Based on ArcGIS and by taking vector polygon of plot in the survey database for the right holders of rural land contractual management in Gangu County as the basic evaluation units,and using meteorological data,soil survey data and DEM data,the grading values of each factor in the evaluation unit were obtained,the database of cherry growth suitability in Gangu County was established.Then the overall index of cherry growth suitability of each plot was calculated,according to which all the cherry planting areas of this county were regionalized.【Result】In accordance with the regionalization database for the suitability of cherry growth of Gangu County,which was divided into four categories:high suitability area,medium suitability area,low suitability area and unsuitable area;the total area of agricultural land(cultivated land and orchard land)in Gangu County was 84175.88 hm^(2),which were 5097.21 hm^(2) of high suitable area,19955.91 hm^(2) of suitable area,58936.33 hm^(2) of low suitable area and 186.43 hm^(2) of unsuitable area,accounting for 6.06%,23.71%,70.01%and 0.22%,respectively.The suitable areas for planting cherry were mainly distributed in the area which altitude below 1600 m,and the area of the sunny slope and semi-sunny slope plots which altitude at 1600-1800 m.【Conclusion】The database can accurately locate every plot per farmer and query the suitability of cherry,meanwhile,guide cultivation according to the score of environmental factors.Based on the database,the results of dividing suitable areas for cherry planting in Gangu County,Gansu Province are basically consistent with the results of field investigations.This database can also provide basic data for similar studies.
作者
陈玉玲
谢爱萍
CHEN Yuling;XIE Aiping(Gansu Forestry Technological College,Tianshui 741020,Gansu,China;College of Landscape Engineering,Gansu Agricultural University,Lanzhou 730070,Gansu,China)
出处
《经济林研究》
北大核心
2021年第3期66-73,共8页
Non-wood Forest Research
基金
甘肃省高等学校创新能力提升项目“基于GIS技术的陇中黄土丘陵区中药材种植布局研究”(2019A-210)。
关键词
大樱桃
适宜种植区
AHP
ARCGIS
影响因子
区划
甘肃省甘谷县
big cherry
suitable planting areas
AHP
ArcGIS
impact factor
regionalization
Gangu County of Gansu Province
