【摘要】：基于遙感影像和社會經(jīng)濟統(tǒng)計數(shù)據(jù),以P-S-R概念模型為框架,選取相應(yīng)指標(biāo),構(gòu)建了青海省瑪沁縣土地生態(tài)安全評價指標(biāo)體系。在ARCGIS平臺下,采用主成分分析法確定各指標(biāo)權(quán)重,計算土地生態(tài)安全綜合值,確定土地生態(tài)安全等級,最終形成瑪沁縣土地生態(tài)安全格局。結(jié)果表明:瑪沁縣土地生態(tài)安全處于惡化、風(fēng)險、敏感、較安全、安全狀態(tài)的比例分別為2.78%、15.54%、27.89%、12.22%、41.56%,瑪沁縣土地生態(tài)安全狀況總體以敏感狀態(tài)和安全狀態(tài)為主。較安全與安全狀態(tài)區(qū)域主要分布于瑪沁縣東部,西部地區(qū)土地生態(tài)安全狀態(tài)以敏感和風(fēng)險為主。鑒于瑪沁縣當(dāng)前土地生態(tài)安全格局,提出需要加強生態(tài)環(huán)境保護力度與完善牧民社會保障措施等建議,為瑪沁縣土地生態(tài)可持續(xù)發(fā)展提供有益參考。
[Abstract]:Based on remote sensing images and socio-economic statistical data, the evaluation index system of land ecological security in Maqin County, Qinghai Province was constructed based on the conceptual model of P-S-R and the corresponding indexes. Under the platform of ARCGIS, the weight of each index is determined by principal component analysis, the comprehensive value of land ecological security is calculated, the grade of land ecological security is determined, and finally the pattern of land ecological security in Maqin county is formed. The results show that the proportion of land ecological security in Maqin County is deteriorating, risk, sensitivity, safety and safety are 2.78%, 15.54%, 27.89%, 12.22%, 41.56%, respectively. The status of land ecological security in Maqin county is mainly sensitive and safe. The relatively safe and safe areas are mainly distributed in the eastern part of Maqin County, while the land ecological security conditions in the western region are mainly sensitive and risk-oriented. In view of the current land ecological security pattern in Maqin County, some suggestions such as strengthening ecological environment protection and perfecting herdsmen's social security measures are put forward, which can provide useful references for the sustainable development of land ecology in Maqin County.
【作者單位】： 青海民族大學(xué)公共管理學(xué)院;
【基金】：國家自然科學(xué)基金項目“基于土地生態(tài)安全的青南藏區(qū)土地空間優(yōu)化配置研究”(41161030) 青海民族大學(xué)2015年校級理工自然科學(xué)項目(2015XJZ23)
【分類號】：X826

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