常馨悦, 董禹麟, 包广道, 等. 鸭绿江流域跨国界地区水土保持功能时空格局研究[J]. 西南林业大学学报(自然科学), 2022, 42(2): 139–150 . DOI: 10.11929/j.swfu.202102033
引用本文: 常馨悦, 董禹麟, 包广道, 等. 鸭绿江流域跨国界地区水土保持功能时空格局研究[J]. 西南林业大学学报(自然科学), 2022, 42(2): 139–150 . DOI: 10.11929/j.swfu.202102033
Chang Xinyue, Dong Yulin, Bao Guangdao, Miao Zhenghong, Ren Zhibin, Zhang Da, Feng Hengdong, Hu Nanlin. Spatial Temporal Pattern of Soil and Water Conservation Function in Trans-boundary Area of Yalu River Basin[J]. Journal of Southwest Forestry University, 2022, 42(2): 139-150. DOI: 10.11929/j.swfu.202102033
Citation: Chang Xinyue, Dong Yulin, Bao Guangdao, Miao Zhenghong, Ren Zhibin, Zhang Da, Feng Hengdong, Hu Nanlin. Spatial Temporal Pattern of Soil and Water Conservation Function in Trans-boundary Area of Yalu River Basin[J]. Journal of Southwest Forestry University, 2022, 42(2): 139-150. DOI: 10.11929/j.swfu.202102033

鸭绿江流域跨国界地区水土保持功能时空格局研究

Spatial Temporal Pattern of Soil and Water Conservation Function in Trans-boundary Area of Yalu River Basin

  • 摘要: 以跨境的鸭绿江流域为研究区,基于多源数据,采用遥感解译、InVEST模型等手段,定量分析1988—2018年鸭绿江流域水土保持功能的变化,探讨二者间权衡/协同关系。结果表明:林地及耕地为流域内主要用地类型,2018年中国一侧、朝鲜一侧林地覆盖率分别为76.78%和75.84%;而耕地覆盖率分别为20.02%和21.63%。近30年来,流域水田面积变化率最大,中国、朝鲜两侧分别增长了330.63 %和127.52%。1988—2018年间流域中国一侧产水量增加118.40×108 mm,朝鲜一侧产水量增加33.76×108 mm;1988—2018年间流域中国一侧土壤保持量增加111.71×108 t,朝鲜一侧土壤保持量增加102.61×108 t。流域中国一侧水土保持功能呈现明显的协同关系,朝鲜一侧水土保持功能呈现协同—权衡—协同的变化态势。本研究为流域生态系统服务功能提升、可持续发展提供重要数据支撑。

     

    Abstract: Taking trans-boundary area of Yalu River Basin as the study area, based on multi-source data, remote sensing interpretation, InVEST model are used to quantitatively analyze the changes of soil and water conservation functions in the Yalu River Basin from 1988 to 2018, and the trade-off or synergistic relationship between them was discussed. The results show that forestland and cropland are the dominant land use type in the Yalu River Basin. In 2018, the areal percent of forestland is 76.78% and 75.84% on the China side and the North Korea side, respectively; the areal percent of cropland is 20.02 % and 21.63 % on the China side and the North Korea side, respectively; in the past 30 years, the change rate of paddy field area in the basin was the largest, the wetland area increased 330.63 % and 127.52 % on the China side and the North Korea side, respectively. With land use changes, the water yield increased by 118.40×108 mm and 33.76×108 mm on the China side and the North Korea side, respectively; the soil conservation decreased by 111.71×108 t, 102.61×108 t on the China side and the North Korea side, respectively. From 1988 to 2018, the water and soil conservation function showed a synergetic relationship and a synergy−trade-off−synergy relationship on the China side and the North Korea side, respectively. This study provides important data for the function improvement and sustainable development of basin ecosystem.

     

/

返回文章
返回