The Spatiotemporal Changes and the Impacts of Climate Factors on Grassland in the Northern Songnen Plain (China)

Grassland is an important ecosystem; the spatiotemporal evolution trend of grassland and its impacts on climatic factors play irreplaceable role in maintaining regional sustainable development ecological balance. In this paper, based remote sensing images 1990, 2000, 2010, 2020, 3S technology, we use methods dynamic rate transfer matrix to analyze northern Songnen Plain (China). The method grey correlation used impact climate it. results showed that changed dramatically unevenly across three periods 1990–2000, 2000–2010, 2010–2020, with biggest change last period. internal conversion mainly occurred between H-grassland (high coverage grassland) M-grassland (medium grassland), while transformation rarely L-grassland (low due small area. There has been a transfer-in from cultivated land, woodland, unused land M-grassland. transfer-out was land. What’s more, Daqing City, Suihua Qiqihar city, as well occurring west Harbin southwest Heihe city. Climate exacerbated reduction areas. summary, rates area north initially mild decrease were then followed by rapid decrease. great significance changes grassland, precipitation had greater grassland. can provide meaningful information for change, protection, management Plain.