本文選題：耕地質(zhì)量 + 監(jiān)測類型�。� 參考：《江西農(nóng)業(yè)大學》2017年碩士論文

【摘要】：新常態(tài)下的新型城鄉(xiāng)發(fā)展關(guān)系對耕地保護提出新要求,耕地保護研究不僅要注重耕地數(shù)量及質(zhì)量的平衡,更要注重保護耕地的生態(tài)安全。為了從數(shù)量、質(zhì)量、生態(tài)三方面全面把握江西省各地區(qū)耕地質(zhì)量狀況,以期為江西省未來全省耕地質(zhì)量針對性地進行監(jiān)測研究及工作提供依據(jù),本研究以全省耕地為研究對象,以全省各縣社會經(jīng)濟、自然氣候及耕地質(zhì)量數(shù)據(jù)為基礎,進行了全省耕地質(zhì)量監(jiān)測類型的劃分及全省耕地質(zhì)量監(jiān)測樣點優(yōu)化布局兩方面的研究。其中耕地質(zhì)量監(jiān)測類型區(qū)劃分過程分為兩步:以各縣地形地貌、水文氣候、種植條件為指標,運用系統(tǒng)聚類分析方法進行全省耕地質(zhì)量監(jiān)測一級類型區(qū)的劃分,該區(qū)目的在于按照農(nóng)業(yè)生產(chǎn)密切相關(guān)的地形及農(nóng)業(yè)條件相似性將全省各縣劃分為性質(zhì)相似的幾大區(qū)域;依據(jù)各縣耕地生態(tài)安全、耕地質(zhì)量等別等級提升潛力及對應的耕地質(zhì)量限制因子,運用Arc GIS空間分析法,進行全省耕地質(zhì)量監(jiān)測二級類型區(qū)劃分,該區(qū)在一級分區(qū)基礎上,更加注重耕地質(zhì)量監(jiān)測的內(nèi)涵。在耕地質(zhì)量監(jiān)測類型區(qū)劃分結(jié)果基礎上,以地理空間抽樣理論為指導,采取網(wǎng)格法布點并結(jié)合Kriging插值方法進行全省耕地質(zhì)量監(jiān)測樣點的優(yōu)化布局。本研究通過以上方法得出如下結(jié)果及結(jié)論:1、全省共分為環(huán)鄱陽湖平原地區(qū)、贛東北山地丘陵區(qū)、贛西北山地丘陵區(qū)、贛中丘陵區(qū)及贛南山地區(qū)五個一級監(jiān)測類型區(qū),常規(guī)監(jiān)測類型區(qū)、生態(tài)保護重點區(qū)、土壤肥力重點區(qū)、田間設施重點區(qū)、水土流失重點區(qū)五個二級監(jiān)測類型區(qū);2、全省耕地質(zhì)量監(jiān)測樣點總數(shù)為1614個樣點,其中環(huán)鄱陽湖平原區(qū)樣點492個樣點,贛東北山地丘陵區(qū)255個樣點,贛西北山地丘陵區(qū)251個樣點,贛中丘陵區(qū)309個樣點,贛南山地區(qū)307個樣點;3、抽樣精度檢驗顯示,全省各分區(qū)調(diào)整后樣點精度均有較高提升,其中各角度樣點抽樣代表性檢驗顯示,樣點對各監(jiān)測類型及等別代表性較良好,其中贛西北山地丘陵區(qū)精度提高最大,較調(diào)整前優(yōu)化了18.9%,贛南山地區(qū)精度提高了17.43%,環(huán)鄱陽湖平原區(qū)精度提高了17.25%,贛中丘陵區(qū)精度提高了16.91%,贛東北山地丘陵區(qū)精度提高了15.57%。綜合證明,基于Kriging插值的樣點優(yōu)化取得較理想結(jié)果,大尺度下的耕地質(zhì)量監(jiān)測樣點優(yōu)化布局具有理論意義,在全省監(jiān)測質(zhì)量監(jiān)測樣點布局有推廣意義。
[Abstract]:The new relationship between urban and rural development puts forward new requirements for cultivated land protection under the new normal. The study of cultivated land protection should not only pay attention to the balance of quantity and quality of cultivated land, but also to protect the ecological security of cultivated land. In order to grasp the situation of cultivated land quality in Jiangxi Province from three aspects of quantity, quality and ecology, and to provide the basis for the future monitoring and research of cultivated land quality in Jiangxi Province, this study takes the cultivated land of Jiangxi Province as the research object. Based on the data of social economy, natural climate and cultivated land quality in various counties of the province, the classification of cultivated land quality monitoring types and the optimization of the distribution of cultivated land quality monitoring samples in the province were studied. The process of classification of cultivated land quality monitoring area is divided into two steps: with the landform, hydrology and climate, planting condition as the index, the first class area of cultivated land quality monitoring in the whole province is divided by the method of systematic cluster analysis. The purpose of this area is to divide the counties of the province into several similar regions according to the similarity of topography and agricultural conditions closely related to agricultural production, and according to the ecological security of cultivated land in each county, The potential of cultivated land quality and the corresponding limiting factors of cultivated land quality are classified by using Arc GIS spatial analysis method. The second type areas of cultivated land quality monitoring in the whole province are divided into two types, which are based on the first grade division. Pay more attention to the connotation of cultivated land quality monitoring. Based on the classification results of cultivated land quality monitoring areas and guided by the theory of geographical spatial sampling, the optimal layout of cultivated land quality monitoring samples in the province was carried out by using grid method and Kriging interpolation method. The results and conclusions of this study are as follows: 1. The province is divided into five types: Poyang Lake plain region, mountainous hilly region in northeast Jiangxi, mountainous hilly region in western Jiangxi, hilly area in central Jiangxi and Gannan mountain area. There are five secondary monitoring areas in the main areas of routine monitoring, ecological protection, soil fertility, field facilities and soil erosion. The total number of cultivated land quality monitoring sites in the province is 1614. There are 492 samples in Poyang Lake plain area, 255 in mountainous hilly area in northeast Jiangxi, 251 in hilly region in western Jiangxi, 309 in hilly area in central Jiangxi and 307 in southern Jiangxi. The accuracy of the sampling points in the whole province was improved after the adjustment. The results of the sampling representativeness test showed that the sample points had a good representative for each monitoring type and the same type, and the accuracy of the mountainous and hilly areas in the west and north of Jiangxi was the most improved, especially in the mountainous and hilly areas in the north of Jiangxi Province. Before the adjustment, the accuracy of this area has been improved by 18.9%, the accuracy of Gannan Mountain area has increased 17.43%, the precision of the plain area around Poyang Lake has increased 17.25%, the accuracy of the middle Jiangxi hilly area has increased 16.91%, and the accuracy of the northeast Jiangxi mountainous hilly area has increased 15.57%. It is proved that the optimal layout of the sampling points based on Kriging interpolation is of theoretical significance, and it is of great significance to popularize the layout of the sampling points for monitoring the quality of cultivated land in the whole province.
【學位授予單位】：江西農(nóng)業(yè)大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：F323.211

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本文編號：1871983