Research on the Performance of Land Transfer Based on GIS System

Transcription

1 2017 2d Iteratoal Coferece o Computatoal Modelg, Smulato ad ppled Mathematcs (CMSM 2017) ISBN: Research o the Performace of Lad Trasfer Based o GIS System Yua GN, J-a ZHNG *, Xao-feg DUN, Hog-a KUI, Yog Zuo, Yag-a ZHNG ad Xue-guag YUN State Key Laboratory of Iformato Photocs ad Optcal Commucatos, Beg Uversty of Posts ad Telecommucatos, Beg100876, Cha *Correspodg author Keywords: Rural lad crculato, Comprehesve performace evaluato, GIS, Support decsos. bstract. Rural lad crculato s a hot topc of lad resource maagemet ad research. It volves the ature of lad use chages, lad chages, cadastral owershp relatos chage ad may other cotet, wth the ad of GIS techology ca be effcet, hgh-qualty completo of these work. Based o the scetfc, practcal ad relable prcples, ths paper realzed a vsble system of abstract data about rural lad crculato by couplg the comprehesve performace evaluato model of rural lad crculato wth GIS Techology. ccordg to ths system, we are able to aalyse the mpact of lad trasfer o socety. Furthermore, the aalyss metoed above affords strog theoretcal foudato for agrcultural sector to make decsos. Fally, based o the rural lad crculato data of specfc towshp, the system s appled to aalyse the mpact of lad trasfer o ths tow the chage the allocato of lad resources for better the future. Itroducto Sce the troducto of the famly-cotract reform Cha from 1978, the passos of the farmers has bee fully spred, ad the great chages has take place the coutrysde. Rural lad crculato become more ad more popular. Most dstrcts Cha carred out the prvate owershp of rural lad, ad rural lad trasactos ca be realzed by sellg or retg [1]. Foreg scholars maly focus o the factors affectg rural lad trasactos. The domestc scholars pay more atteto to the curret stuato ad cotrollg factors of rural lad trasfer [2]. The rural lad crculato has the characterstcs of multple partcpats, dversfed trasfer types, but, problems do est, such as small scale crculato, fragmeted plough, ad complete formato trasmsso. lso, o-agrculturzato ad o-food [3] pheomeo gradually hghlghts Cha [4] after rural lad crculato. So, oly by uderstadg ad graspg the mpact of rural lad crculato o the commuty tme, ca we gude the healthy rural lad crculato, the acheve the optmal allocato of rural lad resources. Geographc Iformato System (GIS) s a computer system for storg, maagg, aalyzg, dsplayg ad applyg geographc formato. The rural lad crculato volves ot oly the chage of owershp ad utlzato type, but also trasformato spatal data such as geographc locato, lad segmetato or cosoldato, area amout ad so o through the comprehesve aalyss of a varety of factors, coveet ad rapd access to formato, to meet the eeds of a varety of dfferet applcatos or scetfc research, ad epress the results by graphcal ad dgtal. pplyg GIS ca realze the combato of space data ad attrbute data, drectly reflect the regularty ad tedecy of lad trasfer. What s more, GIS affords dyamc motor for relevat departmets to make decso more scetfcally. Research Cotets ad Techologcal Process The study of rural lad trasfer cludes the trasfer mechasm of agrcultural lad, aalyss of the structure ad scale of rural lad trasfer, ad the geography of lad trasfer. We used ESRI s rcgis 458

2 to establsh the coecto betwee the attrbute data ad the spatal data, ad chose oe method descrbed specfcally o the addtoal chapters of the paper to set up the model of agrcultural lad crculato comprehesve evaluato system. The, combg GIS ad model we set before, aalyze data ad obta the fluece of rural lad crculato o socety. Fally, based o the rural lad crculato data of a specfc towshp, the system s appled to aalyze the mpact of lad trasfer o ths tow the chage the allocato of lad resources for better the future. The model preseted ths paper s a comprehesve evaluato model,accordg to the scetfc, systematc, operable ad represetatve prcple. Combed wth the basc stuato of farmlad crculato the research area, t s stat to the farmlad crculato fucto. Fully cosderg the factors of agrcultural lad crculato ad the fluece of the factors o the comprehesve performace ad the relablty of the data ad other factors, from the ecoomc performace, socal performace ad ecologcal performace of three aspects were selected, dcated to buld agrcultural lad crculato comprehesve evaluato system. The weghted average de method s used to determe the weght of the deed dvduals, ad the weghts of the dcators are determed accordg to ther sgfcace. 1. Determe the dvdual dcators of the evaluato de y Where: y represets the dvdual de of the -th evaluato de. value of the -th tem, ad represets the stadard value of the -th tem. 2. Calculate the comprehesve evaluato value (1) represets the actual y yw w k1 k1 (2) Where: y represets the composte de, w represets the weght of the evaluato of the -th tem the comprehesve evaluato. I ths paper, we use the etropy method to obta w. Etropy weght method s a obectve weghtg method. I partcular, the etropy method accords to the degree of varato of each de. To calculate the etropy weght of each de by usg the formato etropy, ad the modfy by etropy weght of each de, thus obta weghts obectvely. Compared wth the subectve assgmet method, ths method s more accurate ad more obectve, ad ca better epla the results. If the etropy value of a de s smaller, t shows that the greater the varablty of ts de value, the more formato t provdes. I the comprehesve evaluato, the greater the role of the de, the greater the weght. The calculato of the etropy method takes appromately the followg steps: 1. Collect ad collate the data, assumg that the evaluato de system cotas evaluato dcators, M sample values, the dcators of the composto of the chef data matr X s: X m1 m2 m (3) 2. The stadardzato of dcators. I order to elmate the mpact of the results due to the dfferet dmesos of the dcators, the eed for stadardzato of the dcators. Commoly used processg methods are m-ma method ad z-core method. Here, we chose z-core method to Stadardze these dees. The basc formula for the z-core method s: 459

3 X s Where: represets the mea of the -th dcator : (4) 1 1 ad s represets the stadard devato of the -th dcator: (5) 2 1 s 1 (6) 3. Calculatg the worth of dcators at level of the -th tem : p X 1 (7) the establshmet of dcators of the proporto of matr: P P m 4. Calculate the formato etropy value E ad the formato vald value d: (8) 1 1 e I P I P (9) d 1e The greater the utlty value, the greater the weght. 5. Calculate the average de weght w (10) w d m d 1 (11) 6. Calculate the evaluato value of the sample Idvdual score: S w X So,the -th sample scores are at the tegrated level s as follows: (12) 1 d 1 ( P ) 1 I P 1 I d s 1 ( P ) 1 I P 1 1 I s s S w X Evaluato Ide 1 1 Ths artcle from the socal, ecoomc ad ecologcal beefts of the three selected e dcators show as Table (13) 460

4 Table 1. Idcators of the performace evaluato model. Category layer Ide layer Calculato formula Satsfacto of Farmlad 1 Crculato(1) Socal 1 performace Farmers effectve 2 2 employmet tme de(2) Ecoomc performace Ecologcal performace Rural Egel Coeffcet Realzato Ide(3) Per capta et come chage de of farmers(4) Labor put de ut lad(5) The rate of output chage the ut lad(6) Chage rate of pestcde use per ut of lad(7) Chage rate of fertlzer use per ut of lad(8) The chage rate of the abadomet of lad(9) The meag of the dcator The degree of farmers satsfacto to the rural lad trasfer The chage of farmers effectve employmet tme The chages the stadard of lvg of farmers The chage of farmers qualty of lfe The chage of farmers labor put The chage of lad use rate The mpact of pestcde chage o agrcultural lad The fluece of chemcal fertlzer chage o agrcultural lad The fluece o the crculato of farmlad abadoed area The data ths paper are maly obtaed by revewg lterature ad studyg o the pot. I order to esure the relablty of the evaluato system, several samples from souther Shaa, orther Shaa ad cetral Shaa were selected to calculate the weght of the comprehesve evaluato system. Based o the above model, the weghts of the rural lad trasfer performace evaluato dees are fally obtaed, as show Table 2. Table 2. Weghts of the dees. Socal performace Ecoomc performace Ecologcal performace % 8% 6% 30% 19% 18% 3% 3% 4% Dyamc Motorg ad alyss of Farmlad Crculato Based o GIS Spatal aalyss s the core fucto of geographc formato system. Through the geographcal aalyss of farmlad crculato, the geographcal dstrbuto regularty ad tred of farmlad crculato are foud out, ad the the performace evaluato model of farmlad crculato s provded to provde the bass for supervso ad gudace of farmlad crculato. Ths paper takes a towshp souther Shaa as a eample. Through the cotuous observato ad aalyss of the agrcultural lad crculato ths area, fd the temporal ad spatal characterstcs of regoal agrcultural lad crculato, ad provde the bass for the evaluato ad supervso of farmlad crculato. The dstrbuto map of the farmlad the past three years ad the aual dstrbuto of agrcultural lad dstrbuto are show Fgure 1 I the fgure, the dark area s the plots of lad trasfer. The map s acheved by usg the fucto of GIS software MapIfo10.4. Frst set the felds "R2014", "R2015"ad "R2016"for the map spots, whose type s "Bool", ad assumes that the value of lad crculato s "T", ad the value of lad 461

5 crculato ot chaged s "F". The basc data of each years agrcultural lad trasfer s obtaed through the survey. The use the MapIfo SQL query fucto to obta the flow patter of the flow ad create a ew layer, ad through the superposto fucto to dsplay the rural year of a year agrcultural lad dstrbuto geographcal dstrbuto basc stuato. It ca be see from the fgure that the rural lad trasfer s maly cocetrated the orther rego, the wester rego has a sporadc plot also carred out. The ma features of the lad trasfer are relatvely cocetrated scope ad larger scale. fter the data s gathered, through surveyg o the pot, the process them wth the model above, we ca get the result of the socal performace, ecoomc performace ad ecologcal performace from the year of 2014 to 2016 show as the follow Table 3. Table 3. The result of performace. Socal Performace Ecoomc Performace Ecologcal Performace (1) Rural lad crculato map 2014 (2) Rural lad crculato map 2015 (3) Rural lad crculato map 2016 (4) Summary of farmlad crculato dstrbuto each year Fgure ~2016 rural lad crculato dstrbuto map. Cocluso ad Decso alyss s ca be see from Fgure 1, from 2014 to 2016, the area of agrcultural lad crculato has bee epadg, ad some areas have eve appeared more tha two tmes. ccordg to weghted sythess de ad method, the comprehesve performace of agrcultural lad trasfer s show Fgure 2. s ca be see from the dagram, the ecoomc ad socal beefts have bee a postve ad rsg state, dcatg that the trasfer of farmlad plays postve role to mprove the peoples lvg stadards ad promote ecoomc growth. However, the rural lad crculato has ot played a actve role the ecologcal performace. fter the actual vestgato ad data collato statstcs, foud that the lad after the trasfer of lad for large-scale machery platg ad costructo stes, resultg a substatal crease the amout of pestcdes ad decrease gree area, ths may have a egatve mpact o the rural ecologcal evromet. 462

6 Fgure comprehesve performace of rural lad trasfer. I combato wth the above aalyss. What the relevat departmets should pay atteto to the crculato of rural lad s thato the bass of mprovg ecoomc effcecy ad socety, stregthe ecologcal protecto ad maagemet as much as possble, ad mprove the ecologcal evromet. Refereces [1] O rural lad sttutoal chage ad ovato Cha(II). [2] Hua Yalg, Sh Guoqg ad Lu we. Summary of theores ad practces of lad trasfer abroad [J]. World agrculture, 2006, 09: [3]. Th Ibraheem ad D.. Falh, pplyg Geographc Iformato System (GIS) for Mateace Strategy Selecto, Egeerg Joural (ENG), Scetfc Research Publcato, Vol. 4, No. 1, [4] Yag Xaohu. study o the mode of rural lad crculato -- Joural of Yua Isttute of socalsm [J], 2014(4). 463