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青藏高原人工草地面积 34年来增加2.4倍
Ke Ji Ri Bao· 2025-07-09 01:22
Core Insights - The area of artificial grassland in the Qinghai-Tibet Plateau has increased by 2.4 times from 1988 to 2021, with significant growth observed in Qinghai Province [1][2] - The study highlights the ecological impact of the rapid development of artificial grasslands as a response to the degradation of natural grasslands due to climate change and human activities [1] Summary by Sections - **Artificial Grassland Expansion**: By 2021, there are 1.57 million hectares of artificial grassland in Qinghai Province and Tibet Autonomous Region, with Qinghai accounting for 70% and Tibet for approximately 30% [2] - **Geographical Distribution**: Artificial grasslands in Qinghai are concentrated around favorable water and heat conditions, particularly around Qinghai Lake, Qilian Mountains, Hainan Prefecture, and Huangnan Prefecture. In contrast, those in Tibet are more dispersed, found in northern and southeastern Tibet, as well as river basins like the Yarlung Tsangpo and Lhasa rivers [2] - **Research Methodology**: The research utilized a random forest binary classification model with a high overall accuracy of 97% for mapping artificial grasslands, based on satellite remote sensing data collected over 34 years [1] - **Future Research Directions**: The study indicates a need for further scientific evaluation of the ecological and environmental effects resulting from the transition of natural grasslands to artificial grasslands, as existing statistical data may not fully align with remote sensing data [2] - **Theoretical Support for Development**: The findings provide essential spatial distribution information of artificial grasslands, supporting ecological protection and high-quality development of grassland livestock farming in the Qinghai-Tibet Plateau [2]
奏响新时代“黄河大合唱”的草牧乐章——来自沿黄省份的一线调研
Ren Min Ri Bao· 2025-07-03 21:59
Core Viewpoint - The article emphasizes the importance of promoting a comprehensive green transformation in development and enhancing the quality of the Yellow River Basin's ecological and agricultural systems, particularly through the advancement of grass and livestock industries [1]. Group 1: Grass and Livestock Industry Development - The Ministry of Agriculture and Rural Affairs has launched a three-year project for high-quality development of grass and livestock in the Yellow River Basin, aiming to balance ecological protection with production [1]. - In Qinghai, the mixed planting of forage oats and peas has improved the efficiency of grass production, with fresh grass yield per mu reaching 3.6 tons, a 12% increase compared to previous monoculture practices [2][3]. - The protein content of mixed forage can reach 13%, nearly a 50% increase compared to single-crop oats, leading to reduced reliance on concentrated feed and shortening the fattening period for cattle by 10-15 days [3][4]. Group 2: Technological Innovations in Forage Production - The introduction of membrane hole sowing technology in Gansu has increased seedling emergence rates by 18% and survival rates by 15%, significantly improving the economic viability of forage production [6]. - The use of acid fertilizers instead of alkaline ones in saline-alkali soils has enhanced the effectiveness of fertilization by over 20%, contributing to the successful cultivation of high-quality alfalfa [8]. Group 3: Ecological and Economic Benefits - The implementation of mixed planting and advanced cultivation techniques has led to a 20% reduction in soil erosion rates and improved vegetation coverage in regions like Gansu [6]. - In Henan, the rotation of alfalfa with grain crops has improved soil fertility, with pH levels decreasing from 8.6 to 8.2 and salt content dropping from 0.3% to 0.2%, resulting in increased crop yields [9].
从“寸草不生”到牧草丰盈 戈壁小镇以草为媒振兴高原乡村
Yang Shi Wang· 2025-06-22 05:38
Core Viewpoint - A company from Xining has successfully transformed saline-alkali land in Qaidam Basin into productive grassland, significantly improving the livelihoods of local herders by providing quality forage and agricultural technology [5][14]. Group 1: Company Initiatives - The company focused on developing grassland in Qaidam Basin starting in 2019, addressing the challenges of saline-alkali soil to cultivate high-quality forage crops [5][6]. - Initial attempts faced difficulties, with a seedling survival rate of only 10% due to harsh environmental conditions [8]. - After extensive research and trials, the company identified suitable salt-tolerant forage varieties and implemented modern agricultural practices, leading to successful cultivation by 2022 [10][12]. Group 2: Economic Impact - By 2022, the company achieved a record annual output value of 70 million yuan, supported by advanced agricultural machinery and irrigation systems [12]. - The grass planting area in Qaidam has reached 127,000 acres, with an average yield of 500 kg per acre, alleviating winter forage shortages for local herders [14]. - The company provides employment opportunities for local residents, with villagers operating large agricultural machinery during the planting season [16]. Group 3: Community Support - The company offers technical training and resources to local farmers, including free seeds and fertilizers for poverty alleviation households [18]. - It prioritizes supplying forage at prices 200 yuan lower than the market rate, ensuring local herders have access to necessary resources during winter [14].