التفاصيل البيبلوغرافية
| العنوان: |
高寒绿洲农田健康关键限制因子识别. |
| Alternate Title: |
Identification of Key Limiting Factors of Farmland Health in High-cold Oasis. |
| المؤلفون: |
智毅1, 任向宁2,3,4, 陈文瑛5 |
| المصدر: |
Journal of Anhui Agricultural Sciences. 1/15/2025, Vol. 53 Issue 1, p80-90. 11p. |
| مصطلحات موضوعية: |
*ORGANIC compound content of soils, *ENVIRONMENTAL health, *FOREST protection, *WIND erosion, *SOIL erosion, *WATER shortages, *WATER table, *WETLANDS |
| مصطلحات جغرافية: |
QINGHAI Sheng (China) |
| Abstract (English): |
The farmland of high-cold oasis is an important part of the social economy of the Qinghai Tibet Plateau and an important support for the construction of the national ecological barrier. However, under the dual stress of resource development and economic drive, the pressure of farmland health in high-cold oasis has increased rapidly. It is urgent to identify its key limiting factors and lay the foundation for the scientific protection of farmland health system. This paper takes Delingha City of Qinghai Province as the study area, based on the existing research literature and the characteristics of the farmland in the study area, constructs the farmland health limiting factor system of high-cold oasis, and uses Geodetector to identify the key limiting factors. The results show that: The health of farmland in high-cold oasis is influenced by 4 dimensions: geographical environmental health background, ecological environmental health status, soil health status, and farmland utilization health level, with 15 limiting elements and 51 limiting factors. The binding force of influencing dimensions is between 0. 747 4. 042, limiting factors are between 0. 044 2. 230 and limiting elements are between 0. 001 0. 541. There are 11 key limiting factors for farmland health in high-cold oasis, which are from 0. 224 to 0. 541. The binding force sequence is: salinization degree > field slope > protection forest construction level > irrigation methods> economic benefit level > soil gravel content > wetland density > soil organic matter content > annual precipitation > soil erosion degree > normal groundwater level. The farmland health of high-cold oasis is facing the dual pressure of overall water resource shortage and local groundwater rise stress, as well as many threats such as increased salinization, wind erosion and difficult preservation of soil fertility. Its health status is more sensitive and fragile than that of farmland in lowland and and plain areas, so it is in urgent need of scientific and systematic solutions for protection. [ABSTRACT FROM AUTHOR] |
| Abstract (Chinese): |
高寒绿洲农田是青藏高原社会经济重要组成部分, 是建设国家高原生态屏障的重要支撑. 但是在资源开发与经济驱动双重胁迫 下, 高寒绿洲农田健康压力剧增, 急需识别其关键限制因子, 为科学保护农田健康系统奠定基础. 以青海省德令哈市为研究区, 根据已 有研究文献, 结合研究区农田特征, 构建高寒绿洲农田健康限制因子体系, 采用地理探测器识别关键限制因子. 结果表明:高寒绿洲农 田健康受地理环境健康背景、生态环境健康状况、土壤健康状况和农田利用健康水平 4 个维度, 15 个限制因素, 51 个限制因子的共同影 响, 其中影响维度约束力在 0. 747~ 4. 042, 限制因素在 0. 044~ 2. 230, 限制因子在 0. 001 ~ 0. 541. 高寒绿洲农田健康存在 11 个关键限制 因子, 其约束力在 0. 224~ 0. 541, 盐渍化程度>田面坡度>防风林建设水平>灌溉方法>经济效益水平>砾石含量>河流湿地密度>有机质 含量>年降水量>土壤侵蚀程度>通常地下水位. 高寒绿洲农田健康面临整体水资源紧缺与局部地下水上升胁迫双重压力, 以及盐碱化 程度增加、风力侵蚀、土壤肥力难以保存等诸多威胁, 其健康状况较低地平原区农田更为敏感、脆弱, 急需科学系统解决方案予以保护. [ABSTRACT FROM AUTHOR] |
| قاعدة البيانات: |
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