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]

Group 1 - The core viewpoint of the articles highlights the development of the alfalfa industry in Yongchang County, Gansu Province, through a cooperative model that integrates farmers, bases, and financial support [1][2][3] - The cooperative, Fuhongyuan, plans to plant over 3,000 acres of alfalfa this year, and with the help of a 3.5 million yuan loan from Gansu Bank, the planting area has expanded to over 70,000 acres [1] - The alfalfa produced in this region is of high quality due to favorable climatic conditions, making it a key area for premium forage production in China [2] Group 2 - The financial support initiatives have led to the establishment of 64 scale alfalfa planting enterprises and cooperatives, with 8 leading companies in forage planting and processing [3] - The total area of forage crops in the city remains stable at 300,000 acres, with 200,000 acres dedicated to scale alfalfa planting, positioning Jinchang as the largest alfalfa production base in the province [3] - The local government and financial institutions have facilitated significant financing activities, with 1.27 billion yuan signed for the agricultural sector and 120.57 billion yuan in agricultural loans issued last year [2]

Core Viewpoint - The article highlights the transformation and modernization of the Hetao Irrigation District in Inner Mongolia, focusing on water management, salinization issues, and agricultural innovations to enhance productivity and sustainability [1][2][3][4] Group 1: Water Management Innovations - The Hetao Irrigation District has implemented a real-time monitoring system with 1,284 communication stations and 2,141 data monitoring points, allowing for 24-hour dynamic monitoring of water levels and flow [2] - Water usage is now charged based on actual consumption rather than a flat rate per acre, leading to an estimated annual water savings of approximately 160 cubic meters per acre [2] Group 2: Agricultural Practices and Salinization Issues - Nearly half of the 13.7 million acres of arable land in Bayannur City is affected by salinization, making it the region with the largest area of saline-alkali land in Inner Mongolia [1] - The district has shifted from traditional irrigation methods to a more efficient "water-saving" approach, integrating high-standard farmland construction with saline-alkali land utilization and technological innovation [1][3] Group 3: Saline-Alkali Land Management - The management strategy for saline-alkali land has evolved to include ecological conservation areas, allowing for the natural movement of salts and improving land quality [3] - After comprehensive management, the quality of saline-alkali land has improved, with salt content reduced by 0.2-0.3 percentage points and crop yields increased by over 15% [3] Group 4: Future Development Plans - The future strategy for the Hetao Irrigation District emphasizes water conservation, balanced spatial development, and systematic governance, with a target of improving 302,000 acres of saline-alkali land this year [4]

5月28日，在江苏农垦三河农场，收割机在收割小麦（无人机照片）。"三夏"时节，在位于江苏盱眙的江苏农垦三河农场的农田里，农机来回穿梭，农人们 抢抓农时，进行夏收、夏种等作业。据介绍，三河农场4.1万亩小麦目前已收获七成。 新华社发（许昌银 摄） 02:20 ·新华图片精选· 江苏盱眙：三河农场夏收夏种忙 中欧班列"东通道"滨绥铁路"国门隧道"全线贯通 5月28日，中欧班列"东通道"滨绥铁路交通咽喉——新建绥芬河隧道全线贯通。位于黑龙江省绥芬河市境内的滨绥铁路绥芬河至国境线扩能改造工程新建绥 芬河隧道于2024年5月开始挖掘。隧道全长602米，是绥芬河出入境铁路通道重要的控制性工程。 新华社记者 王松 摄 采收苜蓿 5月27日，大型饲草收割机在采收成熟的紫花苜蓿（无人机照片）。日前，甘肃省张掖市甘州区畜牧产业园内优质饲草基地里的苜蓿开始采收，大型饲草收 割机、自走式粉碎机、运输车等来回穿梭，场面壮观。 新华社发（成林 摄） 渝万高铁珍溪河双线大桥合龙 5月27日，工人在渝万高铁珍溪河双线大桥建设现场进行大桥合龙后的收尾作业。当日，由中国铁建大桥局承建的渝万高铁珍溪河双线大桥顺利合龙，为全 线按期通车奠定了坚实基 ...