Analysis of the gains and losses of ecosystem service value under land use change and zoning in Qiqihar

Under a background of uncoordinated economic development and the ecological environment, quantifying effect brought by land resource changes, have become research key hotspots. To explore use change its impact on ecosystem service value (ESV), analysis method, evaluation model, flow direction model two-dimensional graph theory clustering method were used to analyze profit loss ESV in Qiqihar 2010 2020 division function areas with counties as units. The results show that: 1) city is more obvious, Among them, area cultivated land, wetland, construction other increases, Woodland, grassland, water decreased, changed accounts for 30.95% total area; 2) increased 869 million yuan, sum wetland exceeded 70.0% ESV, main source city; 3) Not all land-use shifts are conducive growth. increase mainly comes from grassland wetland; Conversion woodlands, area, wetlands types causes loss, most conversion land; 4) divided into central conservation western characteristic agriculture dotted northeast agricultural environment functional area. Three policies proposed improve ESV:(1) give play radiation role nature reserves; (2) popularize black protection technology model; (3) prevent control non-point pollution promote clean agriculture.