[2][3][1][4] The northernmost sector is the smallest, lying on the southern edge of the Hindu Kush mountains, in Nuristan Province about 60 km north of Jalalabad.

This subregion is bounded on the north and south by the Hindu Kush alpine meadow ecoregion, and on the west and east by the drier Baluchistan xeric woodlands.

cuspidata, Tsuga dumosa, Taxus sumatrana, Betula utilis, Alnus nepalensis, Betula alnoides, Betula utilis, Picea brachytyla, Juglans regia, Larix gmelinii, Larix sibirica, Larix × czekanowskii, Betula dahurica, Betula pendula, Pinus koraiensis, Pinus sibirica, Pinus sylvestris, Picea obovata, Abies sibirica, Quercus acutissima, Quercus mongolica, Ginkgo biloba, Prunus serrulata, Prunus padus, Tilia amurensis, Salix babylonica, Acer palmatum, Populus tremula, Ulmus davidiana, Ulmus pumila, Pinus pumila, Haloxylon ammodendron, Elaeagnus angustifolia, Tamarix ramosissima, Prunus sibirica, Cathaya argyrophylla, Taiwania cryptomerioides, Cyathea spinulosa, Sassafras tzumu, Davidia involucrata, Metasequoia glyptostroboides, Glyptostrobus pensilis, Castanea mollissima, Quercus myrsinifolia, Quercus acuta, Machilus thunbergii, Tetracentron, Cercidiphyllum japonicum, Emmenopterys henryi, Eucommia ulmoides, species of the beech family (Fagaceae), and cedar (Cedrus).

This forest may become dense, and includes Morinda spruce (Picea smithiana), Bhutan pine (Pinus wallichiana), Quercus semecarpifolia, and Himalayan cedar (Cedrus deodara).

[4] The lakes of the northern sectors support a wide variety of migratory and breeding birds, including various species of rails (pochards, coots), marsh hens, black-necked grebe, and others.