soil productivity
2.Changes of Soil Environment and Its Effects on Crop Productivity in Desertification Process of Sandy Farmlands
3.Obviously, these results underline the experience of numerous upland farmers: Cultivation without safeguarding a fast and stable vegetative cover of crops inevitably leads to soil loss which means loss of productivity.
4.In order to manage larch plantations scientifically, improve its soil quality continually and raise stand productivity, soil acidity change of larch plantations at different development stages and their relationship between active acidity (pH value), exchange acidity, hydrolytic acidity and various types of inorganic phosphorus were studied in mountainous area of eastern part of northeastern China.
5.In order to reduce earthy material into Yellow River, conserve soil and water, improve local agricultural productivity and protect ecological environment, according to the constructive requirement of the whole group dam program in Tianjia Trench small watershed, a small-size silt storage dam for farmland construction is to be built in Tianjia Trench small watershed to perfect the structure of the Group Dam Progrom.
8.For our research,slop and soil type of the cropland also impact the actual crop productivity,the cropland with <3°slope can produce bigger production than that with >3°slope.
9.Functioned as the “kidneys” of the earth, wetlands provide comprehensive eco-environmental and productive services in terms of flood mitigation, climate control, pollution prevention, soil-erosion reduction, environment beautification, biodiversity maintenance, and bio-productivity protection.
10.This paper summarized the disturbance effect of rodents on soil (pedogenesis, patch formation, and physical and chemical properties) and vegetation (species diversity, productivity, and seed dispersion), aimed to illustrate the contributions of rodents activities to desert ecosystem.
