男友太凶猛1v1高h,大地资源在线资源免费观看 ,人妻少妇精品视频二区,极度sm残忍bdsm变态

Global EditionASIA 中文雙語Fran?ais
China
Home / China / Environment

China releases new grassland vegetation map of 'roof of the world'

Xinhua | Updated: 2025-06-19 09:51
Share
Share - WeChat

BEIJING -- China has released its most detailed map yet of grassland vegetation on the Qinghai-Tibet Plateau, using a scale of 1:500,000.

The map, developed by a team led by Wang Yanfen, a professor at the University of Chinese Academy of Sciences (UCAS), was officially unveiled on Tuesday during an academic seminar on grassland vegetation mapping.

Experts at the seminar noted that the map, based on field surveys and multi-source remote sensing data, accurately depicts plant formation distributions and holds significant implications for climate adaptation, sustainable development, and future research on ecosystem functions across the plateau.

The Qinghai-Tibet Plateau, known as the "roof of the world" and "Asia's water tower," serves as a vital ecological security barrier for China. Its ecosystem is dominated by grasslands, which are ecologically fragile and highly sensitive to global climate change.

Over the past 50 years, intensified climate change and growing human activity have altered vegetation distribution patterns, rendering existing maps outdated.

The launch of the second scientific expedition on the plateau in 2017 provided a new opportunity to update the grassland vegetation map.

Wang said that 65 plant formations or formation groups have been identified, and compared to previously published versions, the new map reveals significant vegetation changes over the past 40 years.

For instance, the proportion of alpine meadows that prefer wet and cold conditions has increased from 50 to 69 percent in the grasslands, which strongly confirms the ongoing trend of warming and wetting on the plateau, she added.

In the process of preparing the map, the research team integrated in situ surveys, multi-temporal satellite remote sensing data, and artificial intelligence technology.

This approach synthesized spectral, structural and functional characteristics of plants alongside environmental factors like terrain and hydrothermal conditions, Wang explained.

This innovative approach overcomes the challenges of accurately identifying and classifying plant communities in complex high-altitude environments, which has traditionally been a difficult task.

"Unlike conventional mapping techniques, it places greater emphasis on the intrinsic relationship between plant community attributes and their corresponding habitat characteristics, thereby ensuring objectivity and efficiency in the mapping process," said Wang.

Top
BACK TO THE TOP
English
Copyright 1995 - . All rights reserved. The content (including but not limited to text, photo, multimedia information, etc) published in this site belongs to China Daily Information Co (CDIC). Without written authorization from CDIC, such content shall not be republished or used in any form. Note: Browsers with 1024*768 or higher resolution are suggested for this site.
License for publishing multimedia online 0108263

Registration Number: 130349
FOLLOW US
 
主站蜘蛛池模板: 德格县| 广昌县| 铁力市| 汉川市| 习水县| 武川县| 扶风县| 裕民县| 河北省| 林周县| 东山县| 武宣县| 吉木萨尔县| 兴海县| 睢宁县| 久治县| 江口县| 梓潼县| 隆德县| 开鲁县| 南陵县| 阳山县| 纳雍县| 常德市| 图片| 镶黄旗| 静安区| 旺苍县| 荥阳市| 桃源县| 合肥市| 都匀市| 府谷县| 安康市| 宁国市| 凉山| 车致| 闸北区| 呼图壁县| 平罗县| 渭源县|