Soil salinity Animals 1 Chemical fertilizers 1 Chemical stability 1 Composting 1 Crop yield 1 Degraded grassland 1 Degraded grasslands 1 Ecology 1 Environmental quality assessment 1 Eumonhystera 1 Grassland degradation 1 Indicator indicator 1 Multivariant analysis 1 Municipal solid waste 1 Municipal solid waste compost 1 Nematoda 1 Nematode communities 1 Nitrogen fertilizers 1 North China 1 Organic carbon 1 Pearl millet 1 Pore size 1 Pore-size distribution 1 Prismatolaimus 1 Saline soil 1 Salt dynamic 1 Size distribution 1 Soil fauna 1 Soil hydro-physical property 1