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5篇 您的检索式:作者名="Anthony Whitbread"
    题名 作者 年代 出处 被引量
1Managing crop residues, fertilizers and leaf litters to improve soil C, nutrient balances, and the grain yield of rice and wheat cropping systems in Thailand and Australia显示文摘Anthony Whitbread Graeme Blair Yothin Konboon 2003Agriculture Ecosystem and Environment2003,100,:1
2Managing crop residues, fertilizers and leaf litters to improve soil C, nutrient balances, and the grain yield of rice and wheat cropping systems in Thailand and Australia显示文摘Anthony Whitbread Graeme Blair Yothin Konboon Rod Lefroy Kunnika Naklang 2003Agriculture Ecosystems and Environment2003,,2:1
3Diversity, abundance, and structure of tree communities in the Uluguru forests in the Morogoro region, Tanzania显示文摘Uluguru forests are globally recognized as important biodiversity hotspots, but anthropogenic pressure threatens their value. This study examined species diversity, abundance, and structure of trees in the Uluguru forests. All trees of diameter at breast height(DBH) ≥10 cm were inventoried in seven forests ranging from 3 to 995 ha in area. A total of 900 stems, 101 species and 34 families were inventoried. Fabaceae was the most speciose family.Ehretia amoena Klotzsch was the most abundant species with relative abundance of 9.22 %. The forests differed significantly in species richness(26–93 species ha^-1), tree density(85–390 stems ha^-1), basal area(3–24 m^2ha^-1)and Shannon-Wiener diversity(2.50–4.02). Forest area was significantly and positively correlated with species richness(r = 0.92) and species diversity(r = 0.95). Tree density showed significant positive correlation with species richness(r = 0.80) and basal area(r = 0.85). Milawilila and Nemele forests had highest floristic similarity(0.55)followed by Kimboza and Kilengwe(0.54) while the rest had similarity coefficients of less than 0.50. Despite legislative protection, many forests remain at risk and therefore the possibility to conserve highly valuable tree species via enhanced protection or cultivation must be considered.David Sylvester Kacholi Anthony Michael Whitbread Martin Worbes 2015Journal of Forestry Research2015,26,3:1
4Managing crop residues, fertilizers and leaf litters to improve soil C, nutrient balances, and the grain yield of rice and wheat cropping systems in Thailand and Australia显示文摘Anthony Whitbread Graeme Blair Yothin Konboon Rod Lefroy Kunnika Naklang 2003Agriculture Ecosystems and Environment2003,,2:1
5Effects of land management practices and land cover types on soil loss and crop productivity in Ethiopia:A review显示文摘Identifying land management practices(LMPs)that enhance on-site sediment management and crop productivity is crucial for the prevention,reduction,and restoration of land degradation and contributing to achieving land degradation neutrality(LDN).We reviewed studies in Ethiopia to assess the effects of LMPs on soil loss(84 studies)and crop productivity(34 studies)relative to control practice.Yield variability on conserved lands was assessed using 12,796 fixed plot data.Effects of LMP on soil loss were 0.5-55 t ha^(−1)y^(−1)compared to control practices yielding 50 to 140 t ha^(−1)y^(−1).More than 55%of soil loss records revealed soil loss less than the tolerable rate(10 t ha^(−1)).Area closure,perennial vegetation cover,agronomic practices,mechanical erosion control practices,annual cropland cover,and drainage groups of practices led to 74.0±18.3%,69.0±24.6%,66.2±30.5%,66.1±18.0%,63.5±20.0%,and 40±11,1%soil loss reduction,respectively.A yield increase of 25.2±15.0%,37.5±28.0%,and 75.4±85.0%was found from drainage,agronomy,and mechanical erosion control practices,respectively.The average yield loss by erosion on fields without appropriate land management practice and on conserved fields was 26.5±26.0%and 25±3.7%,respectively.The findings suggest that practices that entail a continuous presence of soil cover during the rainy season,perennial vegetation,retention of moisture,and barriers for sediment transport were most effective at decreasing soil loss and increasing productivity.This review provides evidence to identify the best LMP practices for wider adoption and inform decision-making on LMP investments towards achieving sustainable solutions to reverse land degradation.Gizaw Desta Lulseged Tamene Wuletawu Abera Tilahun Amede Anthony Whitbread 2021International Soil and Water Conservation Research2021,9,4:0
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