This site uses cookies, as explained in our terms of use. If you consent, please close this message and continue to use this site.
The high rate at which soil erosion is taking place in the Koshi Basin of Nepal is a serious concern. Soil erosion impacts not just the fertility of agricultural lands negatively, but also the habitats of fish and other species by causing sedimentation in streams and rivers, and clogging waterways.
The entire Koshi Basin in Nepal lost an estimated 40 million tonnes of soil between1990 and 2010, according to a study conducted by the Koshi Basin Programme at the International Centre for Integrated Mountain Development (ICIMOD) (http://journals.plos.org/plosone/article/comments?id=10.1371/journal.pone.0150494). The study, supported by the Australian Government’s Department of Foreign Aid and Trade (DFAT) through Sustainable Development Investment Portfolio (SDIP), made efforts to fill the information gap on erosion patterns and dynamics from 1990 to 2010 using geospatial technology.
1 min Read
Published in 2016, the study showed that the soil loss rate estimated was 22 million tonnes per hectare of barren land per year, with 18 million tonnes in 1990 and 15 million tonnes in 2010. In addition, the total soil loss from agricultural land was estimated to be 10 million tonnes in 1990 and 14 million tonnes in 2010. An estimated 39 million tonnes of soil was lost in 1990 and 42 million tonnes in 2010.
Identifying soil loss areas is crucial for planning effective interventions at the ground level in the most erosion-affected areas. Erosion priority areas can be determined for planning and implementing conservation measures and erosion management in Nepal, where there is huge loss of arable land due to soil erosion.
Land cover management approaches such as gully plugging, afforestation of degraded land, improving infiltration through construction of pits, and crop management for vegetation cover, among others, can be implemented in fields on hillslopes, or at the watershed scale in the future.
Studies have shown land degradation, sedimentation, and ecological degradation tend to increase as a result of inappropriate land use and management practices. Soil erosion is contributing to substantial changes in basin hydrology and inundation in the transboundary Himalayan river basins.
Initiatives are needed to help increase awareness among farmers and are crucial to identifying the best options for farming practices to reduce soil loss from cultivated land and provide support for the implementation of appropriate measures.
Share
Stay up to date on what’s happening around the HKH with our most recent publications and find out how you can help by subscribing to our mailing list.
Related content
Santosh Nepal, a water and climate specialist at ICIMOD, has been awarded the prestigious ‘Young Science and Technology Award’ by ...
距人类首登世界之巅已70年,而气候紧急情况发生在此:在兴都库什-喜马拉雅区域内,三分之二的冰川预计将在本世纪末消失。 领先的山地机构国际山地综合发展中心(ICIMOD)、尼泊尔登山协会(NMA)和山区伙伴关系(Mountain Partnership) 呼吁全世界来拯救地球上的冰雪,以避免为时过晚。 #“拯救我们的雪”宣言在最初48小时内就收集到1000多个签名,其中包括新西兰前总理、各国外交官、传奇登山者和著名地球科学家。 尼泊尔加德满都讯(2023 年 5 月 29 日)——七十年前的今天,在埃德蒙·希拉里爵士和丹增·诺尔盖首次登上珠峰 ; 70 年后的今天,地球上最高的山峰正在经历由全球变暖引起的前所未有且基本不可逆的变化。 全球变暖正在危及珠峰与兴都库什-喜马拉雅地区的环境,该地区横跨八个国家,约长3500公里。根据目前的排放情况,科学家预计在未来70年内,该地区三分之二的冰川或将消融。 国际山地综合发展中心(ICIMOD)在包括 尼泊尔登山协会 和 山区伙伴关系(联合国自愿伙伴联盟)在内的全球山地机构的支持下,呼吁公众支持 #拯救我们的雪(#SaveOurSnow)运动。该运动要求公众: 在社交平台分享来自世界各地山区的故事和照片,使用#SaveOurSnow 标签 强调气候影响; 在网址 icimod.org/saveoursnow/declaration/ 签署一份宣言,呼吁各国政府兑现将升温限制在 1.5 ...
The International Centre for Integrated Mountain Development (ICIMOD) through its Cryosphere Initiative was a co-organiser for the International Conference on ...
Likewise, indirect impacts like losses to agriculture and livelihoods due to erratic rains in high altitudes may result in increased ...
A four-day theoretical training on glacier mass balance monitoring was conducted from 25–28 October 2016 at the International Centre for ...
Partners Uttarakhand Gramya Vikas Samiti, Integrated Livelihood Support Project (UGVS-ILSP), India and High Value Agriculture Project in Hill ...
ICIMOD and Kathmandu University, Nepal, launched ‘Disaster Reporting’, an android application that enables users to report disaster events along with ...