基于RS的盐碱地改土种稻监测研究

Research on the monitoring of saline-alkali soil improvement for rice planting based on RS technology

松嫩平原区土壤盐碱化严重制约着当地农业的可持续发展,及时掌握盐碱地状况对于盐碱地改良和经济发展是非常必要的。本文在遥感技术的支撑下,基于像元二分模型计算研究区植被覆盖度,研究盐碱地动态变化情况。结果表明:2015—2017年研究区内植被覆盖度主要由低覆盖度向中覆盖度转变,2017—2019年研究区内植被覆盖度主要由中覆盖度向高覆盖度转变,盐碱地面积呈不断减少的趋势。

Soil salinization in Songnen Plain severely restricts the sustainable development of local agriculture.It is very essential to grasp the situation of saline-alkali land in time for the improvement of saline-alkali land and economic development.With the support of remote sensing technology(RS),this paper calculated the vegetation coverage of the study area based on the pixel binary model and studied the dynamic changes of saline-alkali soil.The results showed that:from 2015 to 2017,the vegetation coverage in the study area mainly changed from low coverage to medium coverage.From 2017 to 2019,the vegetation coverage in the study area mainly changed from medium coverage to high coverage,and the saline-alkali land area showed a declining trend.