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Reversing land degradation through grasses: a systematic meta-analysis in the Indian tropics

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Reversing land degradation through grasses: a systematic meta-analysis in the Indian tropics

dc.contributor.author	Mandal, Debashis
dc.contributor.author	Srivastava, Pankaj
dc.contributor.author	Giri, Nishita
dc.contributor.author	Kaushal, Rajesh
dc.contributor.author	Cerdà Bolinches, Artemi
dc.contributor.author	Alam, Nurnabi Meherul
dc.date.accessioned	2018-04-17T09:35:24Z
dc.date.available	2018-04-17T09:35:24Z
dc.date.issued	2017
dc.identifier.citation	Mandal, Debashis Srivastava, Pankaj Giri, Nishita Kaushal, Rajesh Cerdà Bolinches, Artemi Alam, Nurnabi Meherul 2017 Reversing land degradation through grasses: a systematic meta-analysis in the Indian tropics Solid Earth 8 217 233
dc.identifier.uri	http://hdl.handle.net/10550/65717
dc.description.abstract	Although intensive agriculture is necessary to sustain the world's growing population, accelerated soil erosion contributes to a decrease in the environmental health of ecosystems at local, regional and global scales. Reversing the process of land degradation using vegetative measures is of utmost importance in such ecosystems. The present study critically analyzes the effect of grasses in reversing the process of land degradation using a systematic review. The collected information was segregated under three different land use and land management situations. Meta-analysis was applied to test the hypothesis that the use of grasses reduces runoff and soil erosion. The effect of grasses was deduced for grass strip and in combination with physical structures. Similarly, the effects of grasses were analyzed in degraded pasture lands. The overall result of the meta-analysis showed that infiltration capacity increased approximately 2-fold after planting grasses across the slopes in agricultural fields. Grazing land management through a cut-and-carry system increased conservation efficiencies by 42 and 63% with respect to reduction in runoff and erosion, respectively. Considering the comprehensive performance index (CPI), it has been observed that hybrid Napier (Pennisetum purpureum) and sambuta (Saccharum munja) grass seem to posses the most desirable attributes as an effective grass barrier for the western Himalayas and Eastern Ghats, while natural grass (Dichanthium annulatum) and broom grass (Thysanolaena maxima) are found to be most promising grass species for the Konkan region of theWestern Ghats and the northeastern Himalayan region, respectively. In addition to these benefits, it was also observed that soil carbon loss can be reduced by 83% with the use of grasses. Overall, efficacy for erosion control of various grasses was more than 60 %; hence, their selection should be based on the production potential of these grasses under given edaphic and agro-ecological conditions. The present analysis also indicated that grass must be used as a vegetative strip to maintain soil quality in sloppy arable areas (8.5 Mha) of Indian hilly regions. Similarly, due attention should be paid for establishing grasses in 3 Mha of degraded pasture lands and 3.5 Mha of shifting cultivation areas in India to reverse the land degradation.
dc.language.iso	eng
dc.relation.ispartof	Solid Earth, 2017, vol. 8, p. 217-233
dc.subject	Geografia
dc.title	Reversing land degradation through grasses: a systematic meta-analysis in the Indian tropics
dc.type	journal article	es_ES
dc.date.updated	2018-04-17T09:35:24Z
dc.identifier.doi	10.5194/se-8-217-2017
dc.identifier.idgrec	125701
dc.rights.accessRights	open access	es_ES