Litter Resovle Of Vitex Nesundo And Zizyphus Juiuba And Nutrient Characteristics Of Eatrh In Nitrogen Application

Ecosystem restoration and rebuilding is the focus of attention by modernecology is always, the Taihang Mountain area of ecological degradation has becomeone areas of the more vulnerable of the ecological environment in Henan Province. Toaccelerate the region’s vegetation recovery and ecological rebuliding is necessary.Forthis reason, the examination to select the typical community of the Taihang Mountain-Zizyphus jujuba, vitex negundo community for the object,focusing research on Zizyphus jujubaand vitex negundo litter decomposition rate and the impact of conditions on soil nutrientunder different levels of nitrogen applied in the artificial conditions.Thus to provide areference the region to further develop the work of vegetation restoration, resultsshowed that:1. Vitex negundo litter material the final average decomposing rate of0.438, Zizyphus jujuba is0.262. vitex negundo axillaris decomposition under the same conditions faster. vitex negundodry litter final2Vitex> Vitex0> Vitex8> Vitex16, Zizyphus jujuba dry litter decompositionrates final decomposition rate of Zizyphus jujuba4> Zizyphus jujuba16> Zizyphus jujuba0> Zizyphus jujuba2. Zizyphus jujuba and vitex negundo dry litter did not show improvedimpact of the high exogenous nitrogen inputs for the litter decomposition rate.2. Nitrogen in zizyphus jujuba litter of decomposition release end the trial of before and afterthe.The vitex negundo litter the end of the experiment,the nitrogen application rate for theperformance of of8g/m2the litter accumulated N purer sample of the remaining nitrogen ratelitter and showed N purer release.Release sequence of zizyphus jujuba, zizyphus jujuba16>zizyphus jujuba0> zizyphus jujuba2> zizyphus jujuba4.The zizyphus jujuba phosphorusperformance for the release of release from largest to smallest zizyphus jujuba2> zizyphusjujuba16> zizyphus jujuba4> zizyphus jujuba8> zizyphus jujuba0. The vitex negundolitter final of N showed a net release, the release the release in descending order16vitexnegundo> vitex negundo> vitex negundo> vitex negundo> vitex negundo. The vitexnegundo litter of P have was net release, the release in descending order vitex negundo16>vitex negundo8> vitex negundo2> vitex negundo4> vitex negundo0.3. zizyphus jujuba and Vitex nitrogen application plots soil TN amount of performance for thedecline in the180d, zizyphus jujuba and Vitex nitrogen application plots, zizyphus jujuba-like addition to the sample plot with4g/m2the N supply of soil N content was increased, the remaining sample to the final soil N content than the nitrogen fertilizer early to rise.Vitex kindof demonstration during the120-150,240d increased to reduce the180-270d. Axillaris, Vitexsoil, elemental N-P content is far less than the litter N and P content. Litter and soil N and Pcontent correlation study found that the correlation is very low, has not reached significantlevels. zizyphus jujuba, vitex negundo vegetation soil to nitrate. vitex negundo and zizyphusjujuba-like soil of ammonium seasonal changes. Ammonium nitrogen in the February-Marchreduced a lot of enrichment in the3-4month, a large number of release in the next twomonths.4. Two typical vegetation litter decomposition rate and temperature, humidity, precipitationconditions were tested negative correlation. Litter decomposition, the low temperature thanhigh temperature. The zizyphus jujuba litter material and climatic conditions, the correlationis generally low. And average temperature, average temperature difference and precipitationdid not reach significant levels, and the zizyphus jujuba litter nitrogen under the conditions ofthe litter than vitex negundo litter material and climatic conditions, low correlation. The vitexnegundo Litter decomposition is a very strong response to the humidity. LitterDecomposition factors of principal component analysis showed that the cumulativecontribution rate of the first three principal components>90%, the first principal componentcontribution rate of51.0%. The impact of different nitrogen application (0,2,4,8,16g/m2)factors axillaris Litter decomposition the first principal component loading greater than0.9monthly average temperature, maximum temperature and monthly minimumtemperature.The vitex negundo litter decomposition the first principal component load greaterthan the0.9factor the monthly average temperature, maximum temperature and monthlyminimum temperature.