摘要
该文深入探讨黄土高原在过去二十年中退耕还林还草工程的土地使用模式及其对生态的影响。经过研究发现,由于工程的推动、土地的使用模式发生深刻的变化,其中耕地面积缩减了560万公顷,而森林和草地的覆盖率也有明显的增长。生态效应主要体现在水土保持能力的增强,土壤侵蚀模数减少了超过70%,同时植被的净初级生产力也有显著的提升。研究在揭示生态效应区域差异性及水资源潜在压力的同时,也为生态恢复策略优化提供科学参考。
This paper discusses in depth the land use model of the project of returning farmland to forest and grassland in the Loess Plateau over the past two decades and its impact on ecology.After research,it was found that due to the promotion of the project,the land use pattern has undergone profound changes.Among them,the cultivated land area has been reduced by 5.6 million hectares,and the coverage of forests and grasslands has also increased significantly.The ecological effect is mainly reflected in the enhancement of soil and water conservation capabilities,the soil erosion modulus has been reduced by more than 70%,and the net primary productivity of vegetation has also been significantly improved.The research not only reveals regional differences in ecological effects and potential pressure on water resources,but also provides scientific reference for optimizing ecological restoration strategies.
出处
《智慧农业导刊》
2026年第1期45-48,共4页
JOURNAL OF SMART AGRICULTURE
关键词
黄土高原
退耕还林还草
土地利用变化
生态效应
生态恢复
Loess Plateau
returning farmland to forest and grassland
land use change
ecological effect
ecological restoration
