資源描述:
《基于GIS的杭州市耕地質(zhì)量評(píng)價(jià)研究.pdf》由會(huì)員上傳分享,免費(fèi)在線閱讀,更多相關(guān)內(nèi)容在應(yīng)用文檔-天天文庫(kù)。
1、中圊患學(xué)c童握2014,30(20):276—283ChineseAgriculturalScienceBulletin基于GIS的杭州市耕地質(zhì)量評(píng)價(jià)研究謝國(guó)雄(杭州市植保土肥總站,杭州310020)摘要:耕地是農(nóng)業(yè)生產(chǎn)最基本的資源,耕地質(zhì)量的好壞直接影響到農(nóng)業(yè)生產(chǎn)的持續(xù)發(fā)展。以浙江省杭州市為例,探討了在GIS系統(tǒng)的支持下,利用測(cè)土配方項(xiàng)目獲得的耕地質(zhì)量調(diào)查數(shù)據(jù)及地形地貌、農(nóng)田水利設(shè)施狀況等基礎(chǔ)數(shù)據(jù),通過數(shù)學(xué)建模的方法,對(duì)全市176128hm2耕地進(jìn)行了質(zhì)量評(píng)價(jià)。結(jié)果表明,杭州全市耕地可分為3等5級(jí)。
2、一等地、二等地和三等地的面積分別占耕地總面積的21.8%、76.9%和1.3%;一級(jí)耕地、二級(jí)耕地、三級(jí)耕地、四級(jí)耕地和五級(jí)耕地的面積分別占耕地總面積的0.8%、21.1%、52.6%、24.3%和1.3%;總體上杭州市耕地質(zhì)量以中上為主,評(píng)價(jià)得到的耕地分布狀況基本符合實(shí)際情況,表明將GIS技術(shù)運(yùn)用到耕地地力評(píng)價(jià)是一個(gè)切實(shí)可行的方法。對(duì)各級(jí)別的耕地生產(chǎn)性能與管理對(duì)策進(jìn)行了分析。關(guān)鍵詞:耕地;質(zhì)量評(píng)價(jià);GIS中圖分類號(hào):$158文獻(xiàn)標(biāo)志碼:A論文編號(hào):2013—3239Ev~uafionofCultiv
3、atedLandQualityofHangzhouBasedonGISXieGuoxiong(HangzhouPlantProtectionandSoil-fertilizerStation,Hangzhou310020)Abstract:Cultivatedlandisthemostbasicresourceforagriculturalproduction,andqualityofthecultivatedlanddirectlyaffectsthesustainabledevelopmentof
4、agriculturalproduction.Inthispaper,takingHangzhouofZhejiangProvinceasanexample,theauthortookGIStechnologytoevaluatethequalityofcultivatedlandwithanareaof176128hmbyconstructingamathematicalmode1.Surveydataobtainedfromsoiltestingandformulafertilizationpro
5、ject,withbasicinformationoflandformandirrigationandwaterconservancyfacilities,wereusedasfactorsforevaluatingthequalityofcultivatedland.TheresultsshowedthatqualityofHangzhou’Scultivatedlandcouldbedividedintothreegradesandfivelevels.Theareasofthefirst,sec
6、ondandthirdgradesofthelandaccountedfor21.8%,76.9%and1.3%ofthetotalarea,respectively.Theareasofthefirst,second,third,fourth,andfifthlevelsofthelandaccountedfor0.8%,21.1%,52.6%,24_3%and1.3%ofthetotalarea,respectively.TheoverallqualityofcultivatedlandinHan
7、gzhoubelongedtothemiddleandupperlevel,evaluationofcultivatedlandgradedistributionwithGIStechnologywasconsistentwiththeactualsituation,suggestingthattheGIStechnologywasafeasiblemethodforevaluatingthecultivatedlandproductivity.Productionperformanceandmana
8、gementcountermeasuresofdifferentlevelsofcultivatedlandwerealsodiscussed.Keywords:cultivatedland;qualityevaluation;GIS0引言地質(zhì)量的好壞直接影響到農(nóng)業(yè)的可持續(xù)發(fā)展和糧食安耕地是土地的精華,是農(nóng)業(yè)生產(chǎn)最重要的資源,耕全【l】。隨著社會(huì)經(jīng)濟(jì)的快速發(fā)展,中國(guó)耕地?cái)?shù)量與人基金項(xiàng)目:農(nóng)業(yè)部測(cè)土配方施肥項(xiàng)目(浙農(nóng)計(jì)發(fā){2008)16號(hào))作者簡(jiǎn)介:謝國(guó)雄